[{"year":"2024","title":"Simultaneous Diarization and Separation of Meetings through the Integration of Statistical Mixture Models","date_created":"2024-11-14T09:32:38Z","abstract":[{"text":"We propose an approach for simultaneous diarization and separation of meeting data. It consists of a complex Angular Central Gaussian Mixture Model (cACGMM) for speech source separation, and a von-Mises-Fisher Mixture Model (VMFMM) for diarization in a joint statistical framework. Through the integration, both spatial and spectral information are exploited for diarization and separation. We also develop a method for counting the number of active speakers in a segment of a meeting to support block-wise processing. While the total number of speakers in a meeting may be known, it is usually not known on a per-segment level. With the proposed speaker counting, joint diarization and source separation can be done segment-by-segment, and the permutation problem across segments is solved, thus allowing for block-online processing in the future. Experimental results on the LibriCSS meeting corpus show that the integrated approach outperforms a cascaded approach of diarization and speech enhancement in terms of WER, both on a per-segment and on a per-meeting level.","lang":"eng"}],"file":[{"file_name":"main.pdf","file_id":"60930","access_level":"closed","file_size":259907,"date_created":"2025-08-14T08:11:57Z","creator":"cord","date_updated":"2025-08-14T08:11:57Z","relation":"main_file","success":1,"content_type":"application/pdf"}],"publication":"ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","ddc":["000"],"keyword":["diarization","source separation","mixture model","meeting"],"language":[{"iso":"eng"}],"citation":{"mla":"Cord-Landwehr, Tobias, et al. “Simultaneous Diarization and Separation of Meetings through the Integration of Statistical Mixture Models.” <i>ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)</i>, 2024, doi:<a href=\"https://doi.org/10.1109/ICASSP49660.2025.10888445\">10.1109/ICASSP49660.2025.10888445</a>.","bibtex":"@inproceedings{Cord-Landwehr_Boeddeker_Haeb-Umbach_2024, title={Simultaneous Diarization and Separation of Meetings through the Integration of Statistical Mixture Models}, DOI={<a href=\"https://doi.org/10.1109/ICASSP49660.2025.10888445\">10.1109/ICASSP49660.2025.10888445</a>}, booktitle={ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, author={Cord-Landwehr, Tobias and Boeddeker, Christoph and Haeb-Umbach, Reinhold}, year={2024} }","short":"T. Cord-Landwehr, C. Boeddeker, R. Haeb-Umbach, in: ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), 2024.","apa":"Cord-Landwehr, T., Boeddeker, C., &#38; Haeb-Umbach, R. (2024). Simultaneous Diarization and Separation of Meetings through the Integration of Statistical Mixture Models. <i>ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)</i>. 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Hyderabad, India. <a href=\"https://doi.org/10.1109/ICASSP49660.2025.10888445\">https://doi.org/10.1109/ICASSP49660.2025.10888445</a>","ama":"Cord-Landwehr T, Boeddeker C, Haeb-Umbach R. Simultaneous Diarization and Separation of Meetings through the Integration of Statistical Mixture Models. In: <i>ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)</i>. ; 2024. doi:<a href=\"https://doi.org/10.1109/ICASSP49660.2025.10888445\">10.1109/ICASSP49660.2025.10888445</a>","chicago":"Cord-Landwehr, Tobias, Christoph Boeddeker, and Reinhold Haeb-Umbach. “Simultaneous Diarization and Separation of Meetings through the Integration of Statistical Mixture Models.” In <i>ICASSP 2025 - 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)</i>, 2024. <a href=\"https://doi.org/10.1109/ICASSP49660.2025.10888445\">https://doi.org/10.1109/ICASSP49660.2025.10888445</a>.","ieee":"T. Cord-Landwehr, C. Boeddeker, and R. Haeb-Umbach, “Simultaneous Diarization and Separation of Meetings through the Integration of Statistical Mixture Models,” presented at the 2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), Hyderabad, India, 2024, doi: <a href=\"https://doi.org/10.1109/ICASSP49660.2025.10888445\">10.1109/ICASSP49660.2025.10888445</a>."},"has_accepted_license":"1","main_file_link":[{"open_access":"1","url":"https://arxiv.org/pdf/2410.21455"}],"conference":{"name":"2025 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","location":"Hyderabad, India"},"doi":"10.1109/ICASSP49660.2025.10888445","oa":"1","date_updated":"2025-08-14T08:12:22Z","author":[{"last_name":"Cord-Landwehr","id":"44393","full_name":"Cord-Landwehr, Tobias","first_name":"Tobias"},{"id":"40767","full_name":"Boeddeker, Christoph","last_name":"Boeddeker","first_name":"Christoph"},{"first_name":"Reinhold","full_name":"Haeb-Umbach, Reinhold","id":"242","last_name":"Haeb-Umbach"}],"status":"public","type":"conference","file_date_updated":"2025-08-14T08:11:57Z","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"Automatische Transkription von Gesprächssituationen","_id":"508"}],"_id":"57085","user_id":"44393","department":[{"_id":"54"}]},{"type":"conference","status":"public","department":[{"_id":"54"}],"user_id":"44393","_id":"53659","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"name":"Automatische Transkription von Gesprächssituationen","_id":"508"}],"file_date_updated":"2025-08-14T08:09:52Z","has_accepted_license":"1","publication_status":"published","citation":{"ama":"Cord-Landwehr T, Boeddeker C, Zorilă C, Doddipatla R, Haeb-Umbach R. Geodesic Interpolation of Frame-Wise Speaker Embeddings for the Diarization of Meeting Scenarios. In: <i>ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)</i>. IEEE; 2024. doi:<a href=\"https://doi.org/10.1109/icassp48485.2024.10445911\">10.1109/icassp48485.2024.10445911</a>","chicago":"Cord-Landwehr, Tobias, Christoph Boeddeker, Cătălin Zorilă, Rama Doddipatla, and Reinhold Haeb-Umbach. “Geodesic Interpolation of Frame-Wise Speaker Embeddings for the Diarization of Meeting Scenarios.” In <i>ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)</i>. IEEE, 2024. <a href=\"https://doi.org/10.1109/icassp48485.2024.10445911\">https://doi.org/10.1109/icassp48485.2024.10445911</a>.","ieee":"T. Cord-Landwehr, C. Boeddeker, C. Zorilă, R. Doddipatla, and R. Haeb-Umbach, “Geodesic Interpolation of Frame-Wise Speaker Embeddings for the Diarization of Meeting Scenarios,” presented at the 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Seoul, 2024, doi: <a href=\"https://doi.org/10.1109/icassp48485.2024.10445911\">10.1109/icassp48485.2024.10445911</a>.","apa":"Cord-Landwehr, T., Boeddeker, C., Zorilă, C., Doddipatla, R., &#38; Haeb-Umbach, R. (2024). Geodesic Interpolation of Frame-Wise Speaker Embeddings for the Diarization of Meeting Scenarios. <i>ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)</i>. 2024 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP), Seoul. <a href=\"https://doi.org/10.1109/icassp48485.2024.10445911\">https://doi.org/10.1109/icassp48485.2024.10445911</a>","mla":"Cord-Landwehr, Tobias, et al. “Geodesic Interpolation of Frame-Wise Speaker Embeddings for the Diarization of Meeting Scenarios.” <i>ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)</i>, IEEE, 2024, doi:<a href=\"https://doi.org/10.1109/icassp48485.2024.10445911\">10.1109/icassp48485.2024.10445911</a>.","short":"T. Cord-Landwehr, C. Boeddeker, C. Zorilă, R. Doddipatla, R. Haeb-Umbach, in: ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP), IEEE, 2024.","bibtex":"@inproceedings{Cord-Landwehr_Boeddeker_Zorilă_Doddipatla_Haeb-Umbach_2024, title={Geodesic Interpolation of Frame-Wise Speaker Embeddings for the Diarization of Meeting Scenarios}, DOI={<a href=\"https://doi.org/10.1109/icassp48485.2024.10445911\">10.1109/icassp48485.2024.10445911</a>}, booktitle={ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)}, publisher={IEEE}, author={Cord-Landwehr, Tobias and Boeddeker, Christoph and Zorilă, Cătălin and Doddipatla, Rama and Haeb-Umbach, Reinhold}, year={2024} }"},"author":[{"full_name":"Cord-Landwehr, Tobias","id":"44393","last_name":"Cord-Landwehr","first_name":"Tobias"},{"first_name":"Christoph","full_name":"Boeddeker, Christoph","id":"40767","last_name":"Boeddeker"},{"first_name":"Cătălin","full_name":"Zorilă, Cătălin","last_name":"Zorilă"},{"first_name":"Rama","last_name":"Doddipatla","full_name":"Doddipatla, Rama"},{"id":"242","full_name":"Haeb-Umbach, Reinhold","last_name":"Haeb-Umbach","first_name":"Reinhold"}],"date_updated":"2025-08-14T08:11:07Z","doi":"10.1109/icassp48485.2024.10445911","conference":{"location":"Seoul","name":"2024 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)"},"publication":"ICASSP 2024 - 2024 IEEE International Conference on Acoustics, Speech and Signal Processing (ICASSP)","file":[{"relation":"main_file","success":1,"content_type":"application/pdf","access_level":"closed","file_name":"main.pdf","file_id":"60929","file_size":254478,"date_created":"2025-08-14T08:09:52Z","creator":"cord","date_updated":"2025-08-14T08:09:52Z"}],"language":[{"iso":"eng"}],"ddc":["000"],"year":"2024","date_created":"2024-04-25T12:57:22Z","publisher":"IEEE","title":"Geodesic Interpolation of Frame-Wise Speaker Embeddings for the Diarization of Meeting Scenarios"},{"article_number":"036110","_id":"61251","project":[{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"_id":"56","name":"TRR 142 - Project Area C"},{"_id":"173","name":"TRR 142; TP C09: Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch bei Telekom Wellenlängen"},{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"PhoQC: Photonisches Quantencomputing","_id":"266"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"35"},{"_id":"230"},{"_id":"27"},{"_id":"429"},{"_id":"623"}],"user_id":"16199","status":"public","type":"journal_article","doi":"10.1063/5.0214197","date_updated":"2025-09-12T11:11:32Z","volume":1,"author":[{"full_name":"Bauch, David","last_name":"Bauch","first_name":"David"},{"first_name":"Nikolas","id":"79191","full_name":"Köcher, Nikolas","last_name":"Köcher"},{"id":"90283","full_name":"Heinisch, Nils","last_name":"Heinisch","orcid":"0009-0006-0984-2097","first_name":"Nils"},{"orcid":"0000-0003-4042-4951","last_name":"Schumacher","id":"27271","full_name":"Schumacher, Stefan","first_name":"Stefan"}],"intvolume":"         1","citation":{"apa":"Bauch, D., Köcher, N., Heinisch, N., &#38; Schumacher, S. (2024). Time-bin entanglement in the deterministic generation of linear photonic cluster states. <i>APL Quantum</i>, <i>1</i>(3), Article 036110. <a href=\"https://doi.org/10.1063/5.0214197\">https://doi.org/10.1063/5.0214197</a>","mla":"Bauch, David, et al. “Time-Bin Entanglement in the Deterministic Generation of Linear Photonic Cluster States.” <i>APL Quantum</i>, vol. 1, no. 3, 036110, AIP Publishing, 2024, doi:<a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>.","short":"D. Bauch, N. Köcher, N. Heinisch, S. Schumacher, APL Quantum 1 (2024).","bibtex":"@article{Bauch_Köcher_Heinisch_Schumacher_2024, title={Time-bin entanglement in the deterministic generation of linear photonic cluster states}, volume={1}, DOI={<a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>}, number={3036110}, journal={APL Quantum}, publisher={AIP Publishing}, author={Bauch, David and Köcher, Nikolas and Heinisch, Nils and Schumacher, Stefan}, year={2024} }","chicago":"Bauch, David, Nikolas Köcher, Nils Heinisch, and Stefan Schumacher. “Time-Bin Entanglement in the Deterministic Generation of Linear Photonic Cluster States.” <i>APL Quantum</i> 1, no. 3 (2024). <a href=\"https://doi.org/10.1063/5.0214197\">https://doi.org/10.1063/5.0214197</a>.","ieee":"D. Bauch, N. Köcher, N. Heinisch, and S. Schumacher, “Time-bin entanglement in the deterministic generation of linear photonic cluster states,” <i>APL Quantum</i>, vol. 1, no. 3, Art. no. 036110, 2024, doi: <a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>.","ama":"Bauch D, Köcher N, Heinisch N, Schumacher S. Time-bin entanglement in the deterministic generation of linear photonic cluster states. <i>APL Quantum</i>. 2024;1(3). doi:<a href=\"https://doi.org/10.1063/5.0214197\">10.1063/5.0214197</a>"},"publication_identifier":{"issn":["2835-0103"]},"publication_status":"published","language":[{"iso":"eng"}],"abstract":[{"lang":"eng","text":"<jats:p>We theoretically investigate strategies for the deterministic creation of trains of time-bin entangled photons using an individual quantum emitter described by a Λ-type electronic system. We explicitly demonstrate the theoretical generation of linear cluster states with substantial numbers of entangled photonic qubits in full microscopic numerical simulations. The underlying scheme is based on the manipulation of ground state coherences through precise optical driving. One important finding is that the most easily accessible quality metrics, the achievable rotation fidelities, fall short in assessing the actual quantum correlations of the emitted photons in the face of losses. To address this, we explicitly calculate stabilizer generator expectation values as a superior gauge for the quantum properties of the generated many-photon state. With widespread applicability in other emitter and excitation–emission schemes also, our work lays the conceptual foundations for an in-depth practical analysis of time-bin entanglement based on full numerical simulations with predictive capabilities for realistic systems and setups, including losses and imperfections. The specific results shown in the present work illustrate that with controlled minimization of losses and realistic system parameters for quantum-dot type systems, useful linear cluster states of significant lengths can be generated in the calculations, discussing the possibility of scalability for quantum information processing endeavors.</jats:p>"}],"publication":"APL Quantum","title":"Time-bin entanglement in the deterministic generation of linear photonic cluster states","publisher":"AIP Publishing","date_created":"2025-09-12T11:08:59Z","year":"2024","issue":"3"},{"publication":"Physical Review Research","type":"journal_article","status":"public","abstract":[{"text":"<jats:p>In the SUPER scheme (Swing-UP of the quantum EmitteR population), excitation of a quantum emitter is achieved with two off-resonant, red-detuned laser pulses. This allows the generation of high-quality single photons without the need of complex laser stray light suppression or careful spectral filtering. In the present work, we extend this promising method to quantum emitters, specifically semiconductor quantum dots, inside a resonant optical cavity. A significant advantage of the SUPER scheme is identified in that it eliminates re-excitation of the quantum emitter by suppressing photon emission during the excitation cycle. This, in turn, leads to almost ideal single-photon purity, overcoming a major factor typically limiting the quality of photons generated with quantum emitters in high-quality cavities. We further find that for cavity-mediated biexciton emission of degenerate photon pairs, the SUPER scheme leads to near-perfect biexciton initialization with very high values of polarization entanglement of emitted photon pairs.</jats:p>\r\n          <jats:sec>\r\n            <jats:title/>\r\n            <jats:supplementary-material>\r\n              <jats:permissions>\r\n                <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement>\r\n                <jats:copyright-year>2024</jats:copyright-year>\r\n              </jats:permissions>\r\n            </jats:supplementary-material>\r\n          </jats:sec>","lang":"eng"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"27"}],"user_id":"16199","_id":"61253","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"name":"TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142; TP C09: Ideale Erzeugung von Photonenpaaren für Verschränkungsaustausch bei Telekom Wellenlängen","_id":"173"}],"language":[{"iso":"eng"}],"article_number":"L012017","issue":"1","publication_identifier":{"issn":["2643-1564"]},"publication_status":"published","intvolume":"         6","citation":{"bibtex":"@article{Heinisch_Köcher_Bauch_Schumacher_2024, title={Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs}, volume={6}, DOI={<a href=\"https://doi.org/10.1103/physrevresearch.6.l012017\">10.1103/physrevresearch.6.l012017</a>}, number={1L012017}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Heinisch, Nils and Köcher, Nikolas and Bauch, David and Schumacher, Stefan}, year={2024} }","mla":"Heinisch, Nils, et al. “Swing-up Dynamics in Quantum Emitter Cavity Systems: Near Ideal Single Photons and Entangled Photon Pairs.” <i>Physical Review Research</i>, vol. 6, no. 1, L012017, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevresearch.6.l012017\">10.1103/physrevresearch.6.l012017</a>.","short":"N. Heinisch, N. Köcher, D. Bauch, S. Schumacher, Physical Review Research 6 (2024).","apa":"Heinisch, N., Köcher, N., Bauch, D., &#38; Schumacher, S. (2024). Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs. <i>Physical Review Research</i>, <i>6</i>(1), Article L012017. <a href=\"https://doi.org/10.1103/physrevresearch.6.l012017\">https://doi.org/10.1103/physrevresearch.6.l012017</a>","chicago":"Heinisch, Nils, Nikolas Köcher, David Bauch, and Stefan Schumacher. “Swing-up Dynamics in Quantum Emitter Cavity Systems: Near Ideal Single Photons and Entangled Photon Pairs.” <i>Physical Review Research</i> 6, no. 1 (2024). <a href=\"https://doi.org/10.1103/physrevresearch.6.l012017\">https://doi.org/10.1103/physrevresearch.6.l012017</a>.","ieee":"N. Heinisch, N. Köcher, D. Bauch, and S. Schumacher, “Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs,” <i>Physical Review Research</i>, vol. 6, no. 1, Art. no. L012017, 2024, doi: <a href=\"https://doi.org/10.1103/physrevresearch.6.l012017\">10.1103/physrevresearch.6.l012017</a>.","ama":"Heinisch N, Köcher N, Bauch D, Schumacher S. Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs. <i>Physical Review Research</i>. 2024;6(1). doi:<a href=\"https://doi.org/10.1103/physrevresearch.6.l012017\">10.1103/physrevresearch.6.l012017</a>"},"year":"2024","volume":6,"author":[{"orcid":"0009-0006-0984-2097","last_name":"Heinisch","id":"90283","full_name":"Heinisch, Nils","first_name":"Nils"},{"last_name":"Köcher","full_name":"Köcher, Nikolas","id":"79191","first_name":"Nikolas"},{"first_name":"David","last_name":"Bauch","full_name":"Bauch, David"},{"id":"27271","full_name":"Schumacher, Stefan","orcid":"0000-0003-4042-4951","last_name":"Schumacher","first_name":"Stefan"}],"date_created":"2025-09-12T11:16:31Z","publisher":"American Physical Society (APS)","date_updated":"2025-09-12T11:18:05Z","doi":"10.1103/physrevresearch.6.l012017","title":"Swing-up dynamics in quantum emitter cavity systems: Near ideal single photons and entangled photon pairs"},{"language":[{"iso":"eng"}],"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"name":"TRR 142 - Project Area A","_id":"54"},{"_id":"55","name":"TRR 142 - Project Area B"},{"_id":"61","name":"TRR 142; TP A04: Nichtlineare Quantenprozesstomographie und Photonik mit Polaritonen in Mikrokavitäten"},{"_id":"170","name":"TRR 142; TP B09: Effiziente Erzeugung mit maßgeschneiderter optischer Phaselage der zweiten Harmonischen mittels Quasi-gebundener Zustände in GaAs Metaoberflächen"}],"_id":"61255","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"705"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"27"}],"abstract":[{"lang":"eng","text":"<jats:title>Abstract</jats:title>\r\n               <jats:p>Topological states have been widely investigated in different types of systems and lattices. In the present work, we report on topological edge states in double-wave (DW) chains, which can be described by a generalized Aubry-André-Harper (AAH) model. For the specific system of a driven-dissipative exciton polariton system we show that in such potential chains, different types of edge states can form. For resonant optical excitation, we further find that the optical nonlinearity leads to a multistability of different edge states. This includes topologically protected edge states evolved directly from individual linear eigenstates as well as additional edge states that originate from nonlinearity-induced localization of bulk states. Extending the system into two dimensions (2D) by stacking horizontal DW chains in the vertical direction, we also create 2D multi-wave lattices. In such 2D lattices multiple Su–Schrieffer–Heeger (SSH) chains appear along the vertical direction. The combination of DW chains in the horizonal and SSH chains in the vertical direction then results in the formation of higher-order topological insulator corner states. Multistable corner states emerge in the nonlinear regime.</jats:p>"}],"status":"public","type":"journal_article","publication":"Nanophotonics","title":"Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates","doi":"10.1515/nanoph-2023-0556","publisher":"Walter de Gruyter GmbH","date_updated":"2025-09-12T11:22:41Z","date_created":"2025-09-12T11:19:22Z","author":[{"first_name":"Tobias","last_name":"Schneider","full_name":"Schneider, Tobias"},{"first_name":"Wenlong","last_name":"Gao","full_name":"Gao, Wenlong","id":"78853"},{"first_name":"Thomas","id":"30525","full_name":"Zentgraf, Thomas","orcid":"0000-0002-8662-1101","last_name":"Zentgraf"},{"orcid":"0000-0003-4042-4951","last_name":"Schumacher","full_name":"Schumacher, Stefan","id":"27271","first_name":"Stefan"},{"id":"59416","full_name":"Ma, Xuekai","last_name":"Ma","first_name":"Xuekai"}],"volume":13,"year":"2024","citation":{"short":"T. Schneider, W. Gao, T. Zentgraf, S. Schumacher, X. Ma, Nanophotonics 13 (2024) 509–518.","mla":"Schneider, Tobias, et al. “Topological Edge and Corner States in Coupled Wave Lattices in Nonlinear Polariton Condensates.” <i>Nanophotonics</i>, vol. 13, no. 4, Walter de Gruyter GmbH, 2024, pp. 509–18, doi:<a href=\"https://doi.org/10.1515/nanoph-2023-0556\">10.1515/nanoph-2023-0556</a>.","bibtex":"@article{Schneider_Gao_Zentgraf_Schumacher_Ma_2024, title={Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates}, volume={13}, DOI={<a href=\"https://doi.org/10.1515/nanoph-2023-0556\">10.1515/nanoph-2023-0556</a>}, number={4}, journal={Nanophotonics}, publisher={Walter de Gruyter GmbH}, author={Schneider, Tobias and Gao, Wenlong and Zentgraf, Thomas and Schumacher, Stefan and Ma, Xuekai}, year={2024}, pages={509–518} }","apa":"Schneider, T., Gao, W., Zentgraf, T., Schumacher, S., &#38; Ma, X. (2024). Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates. <i>Nanophotonics</i>, <i>13</i>(4), 509–518. <a href=\"https://doi.org/10.1515/nanoph-2023-0556\">https://doi.org/10.1515/nanoph-2023-0556</a>","ama":"Schneider T, Gao W, Zentgraf T, Schumacher S, Ma X. Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates. <i>Nanophotonics</i>. 2024;13(4):509-518. doi:<a href=\"https://doi.org/10.1515/nanoph-2023-0556\">10.1515/nanoph-2023-0556</a>","ieee":"T. Schneider, W. Gao, T. Zentgraf, S. Schumacher, and X. Ma, “Topological edge and corner states in coupled wave lattices in nonlinear polariton condensates,” <i>Nanophotonics</i>, vol. 13, no. 4, pp. 509–518, 2024, doi: <a href=\"https://doi.org/10.1515/nanoph-2023-0556\">10.1515/nanoph-2023-0556</a>.","chicago":"Schneider, Tobias, Wenlong Gao, Thomas Zentgraf, Stefan Schumacher, and Xuekai Ma. “Topological Edge and Corner States in Coupled Wave Lattices in Nonlinear Polariton Condensates.” <i>Nanophotonics</i> 13, no. 4 (2024): 509–18. <a href=\"https://doi.org/10.1515/nanoph-2023-0556\">https://doi.org/10.1515/nanoph-2023-0556</a>."},"page":"509-518","intvolume":"        13","publication_status":"published","publication_identifier":{"issn":["2192-8614"]},"issue":"4"},{"title":"Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems","doi":"10.1103/physrevresearch.6.013148","publisher":"American Physical Society (APS)","date_updated":"2025-09-12T11:24:59Z","author":[{"full_name":"Wingenbach, Jan","id":"69187","last_name":"Wingenbach","first_name":"Jan"},{"first_name":"Stefan","orcid":"0000-0003-4042-4951","last_name":"Schumacher","full_name":"Schumacher, Stefan","id":"27271"},{"first_name":"Xuekai","id":"59416","full_name":"Ma, Xuekai","last_name":"Ma"}],"date_created":"2025-09-12T11:23:33Z","volume":6,"year":"2024","citation":{"apa":"Wingenbach, J., Schumacher, S., &#38; Ma, X. (2024). Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems. <i>Physical Review Research</i>, <i>6</i>(1), Article 013148. <a href=\"https://doi.org/10.1103/physrevresearch.6.013148\">https://doi.org/10.1103/physrevresearch.6.013148</a>","short":"J. Wingenbach, S. Schumacher, X. Ma, Physical Review Research 6 (2024).","bibtex":"@article{Wingenbach_Schumacher_Ma_2024, title={Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems}, volume={6}, DOI={<a href=\"https://doi.org/10.1103/physrevresearch.6.013148\">10.1103/physrevresearch.6.013148</a>}, number={1013148}, journal={Physical Review Research}, publisher={American Physical Society (APS)}, author={Wingenbach, Jan and Schumacher, Stefan and Ma, Xuekai}, year={2024} }","mla":"Wingenbach, Jan, et al. “Manipulating Spectral Topology and Exceptional Points by Nonlinearity in Non-Hermitian Polariton Systems.” <i>Physical Review Research</i>, vol. 6, no. 1, 013148, American Physical Society (APS), 2024, doi:<a href=\"https://doi.org/10.1103/physrevresearch.6.013148\">10.1103/physrevresearch.6.013148</a>.","ieee":"J. Wingenbach, S. Schumacher, and X. Ma, “Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems,” <i>Physical Review Research</i>, vol. 6, no. 1, Art. no. 013148, 2024, doi: <a href=\"https://doi.org/10.1103/physrevresearch.6.013148\">10.1103/physrevresearch.6.013148</a>.","chicago":"Wingenbach, Jan, Stefan Schumacher, and Xuekai Ma. “Manipulating Spectral Topology and Exceptional Points by Nonlinearity in Non-Hermitian Polariton Systems.” <i>Physical Review Research</i> 6, no. 1 (2024). <a href=\"https://doi.org/10.1103/physrevresearch.6.013148\">https://doi.org/10.1103/physrevresearch.6.013148</a>.","ama":"Wingenbach J, Schumacher S, Ma X. Manipulating spectral topology and exceptional points by nonlinearity in non-Hermitian polariton systems. <i>Physical Review Research</i>. 2024;6(1). doi:<a href=\"https://doi.org/10.1103/physrevresearch.6.013148\">10.1103/physrevresearch.6.013148</a>"},"intvolume":"         6","publication_status":"published","publication_identifier":{"issn":["2643-1564"]},"issue":"1","article_number":"013148","language":[{"iso":"eng"}],"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"name":"TRR 142 - Project Area A","_id":"54"},{"name":"TRR 142; TP A04: Nichtlineare Quantenprozesstomographie und Photonik mit Polaritonen in Mikrokavitäten","_id":"61"}],"_id":"61257","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"705"},{"_id":"35"},{"_id":"230"},{"_id":"27"},{"_id":"429"}],"abstract":[{"lang":"eng","text":"<jats:p>Exceptional points (EPs), with their intriguing spectral topology, have attracted considerable attention in a broad range of physical systems, with potential sensing applications driving much of the present research in this field. Here, we investigate spectral topology and EPs in systems with significant nonlinearity, exemplified by a nonequilibrium exciton-polariton condensate. With the possibility to control loss and gain and nonlinearity by optical means, this system allows for a comprehensive analysis of the interplay of nonlinearities (Kerr type and saturable gain) and non-Hermiticity. Not only do we find that EPs can be intentionally shifted in parameter space by the saturable gain, but we also observe intriguing rotations and intersections of Riemann surfaces and find nonlinearity-enhanced sensing capabilities. With this, our results illustrate the potential of tailoring spectral topology and related phenomena in non-Hermitian systems by nonlinearity.</jats:p>\r\n          <jats:sec>\r\n            <jats:title/>\r\n            <jats:supplementary-material>\r\n              <jats:permissions>\r\n                <jats:copyright-statement>Published by the American Physical Society</jats:copyright-statement>\r\n                <jats:copyright-year>2024</jats:copyright-year>\r\n              </jats:permissions>\r\n            </jats:supplementary-material>\r\n          </jats:sec>"}],"status":"public","type":"journal_article","publication":"Physical Review Research"},{"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"61259","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"35"},{"_id":"230"},{"_id":"27"}],"language":[{"iso":"eng"}],"type":"journal_article","publication":"The Journal of Physical Chemistry C","status":"public","publisher":"American Chemical Society (ACS)","date_updated":"2025-09-12T11:27:57Z","date_created":"2025-09-12T11:26:49Z","author":[{"full_name":"Bauch, Fabian","last_name":"Bauch","first_name":"Fabian"},{"first_name":"Chuan-Ding","full_name":"Dong, Chuan-Ding","last_name":"Dong"},{"last_name":"Schumacher","orcid":"0000-0003-4042-4951","id":"27271","full_name":"Schumacher, Stefan","first_name":"Stefan"}],"volume":128,"title":"Dynamics of Electron–Hole Coulomb Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers","doi":"10.1021/acs.jpcc.3c07513","publication_status":"published","publication_identifier":{"issn":["1932-7447","1932-7455"]},"issue":"8","year":"2024","citation":{"short":"F. Bauch, C.-D. Dong, S. Schumacher, The Journal of Physical Chemistry C 128 (2024) 3525–3532.","mla":"Bauch, Fabian, et al. “Dynamics of Electron–Hole Coulomb Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers.” <i>The Journal of Physical Chemistry C</i>, vol. 128, no. 8, American Chemical Society (ACS), 2024, pp. 3525–32, doi:<a href=\"https://doi.org/10.1021/acs.jpcc.3c07513\">10.1021/acs.jpcc.3c07513</a>.","bibtex":"@article{Bauch_Dong_Schumacher_2024, title={Dynamics of Electron–Hole Coulomb Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers}, volume={128}, DOI={<a href=\"https://doi.org/10.1021/acs.jpcc.3c07513\">10.1021/acs.jpcc.3c07513</a>}, number={8}, journal={The Journal of Physical Chemistry C}, publisher={American Chemical Society (ACS)}, author={Bauch, Fabian and Dong, Chuan-Ding and Schumacher, Stefan}, year={2024}, pages={3525–3532} }","apa":"Bauch, F., Dong, C.-D., &#38; Schumacher, S. (2024). Dynamics of Electron–Hole Coulomb Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers. <i>The Journal of Physical Chemistry C</i>, <i>128</i>(8), 3525–3532. <a href=\"https://doi.org/10.1021/acs.jpcc.3c07513\">https://doi.org/10.1021/acs.jpcc.3c07513</a>","ieee":"F. Bauch, C.-D. Dong, and S. Schumacher, “Dynamics of Electron–Hole Coulomb Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers,” <i>The Journal of Physical Chemistry C</i>, vol. 128, no. 8, pp. 3525–3532, 2024, doi: <a href=\"https://doi.org/10.1021/acs.jpcc.3c07513\">10.1021/acs.jpcc.3c07513</a>.","chicago":"Bauch, Fabian, Chuan-Ding Dong, and Stefan Schumacher. “Dynamics of Electron–Hole Coulomb Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers.” <i>The Journal of Physical Chemistry C</i> 128, no. 8 (2024): 3525–32. <a href=\"https://doi.org/10.1021/acs.jpcc.3c07513\">https://doi.org/10.1021/acs.jpcc.3c07513</a>.","ama":"Bauch F, Dong C-D, Schumacher S. Dynamics of Electron–Hole Coulomb Attractive Energy and Dipole Moment of Hot Excitons in Donor–Acceptor Polymers. <i>The Journal of Physical Chemistry C</i>. 2024;128(8):3525-3532. doi:<a href=\"https://doi.org/10.1021/acs.jpcc.3c07513\">10.1021/acs.jpcc.3c07513</a>"},"intvolume":"       128","page":"3525-3532"},{"publication":"Physical Chemistry Chemical Physics","type":"journal_article","status":"public","abstract":[{"text":"<jats:p>Charge transfer mechanism in the deprotonation-induced n-type doping of PCBM.</jats:p>","lang":"eng"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"230"},{"_id":"27"}],"user_id":"16199","_id":"61263","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"language":[{"iso":"eng"}],"issue":"5","publication_identifier":{"issn":["1463-9076","1463-9084"]},"publication_status":"published","intvolume":"        26","page":"4194-4199","citation":{"apa":"Dong, C.-D., Bauch, F., Hu, Y., &#38; Schumacher, S. (2024). Charge transfer in superbase n-type doping of PCBM induced by deprotonation. <i>Physical Chemistry Chemical Physics</i>, <i>26</i>(5), 4194–4199. <a href=\"https://doi.org/10.1039/d3cp05105f\">https://doi.org/10.1039/d3cp05105f</a>","short":"C.-D. Dong, F. Bauch, Y. Hu, S. Schumacher, Physical Chemistry Chemical Physics 26 (2024) 4194–4199.","bibtex":"@article{Dong_Bauch_Hu_Schumacher_2024, title={Charge transfer in superbase n-type doping of PCBM induced by deprotonation}, volume={26}, DOI={<a href=\"https://doi.org/10.1039/d3cp05105f\">10.1039/d3cp05105f</a>}, number={5}, journal={Physical Chemistry Chemical Physics}, publisher={Royal Society of Chemistry (RSC)}, author={Dong, Chuan-Ding and Bauch, Fabian and Hu, Yuanyuan and Schumacher, Stefan}, year={2024}, pages={4194–4199} }","mla":"Dong, Chuan-Ding, et al. “Charge Transfer in Superbase N-Type Doping of PCBM Induced by Deprotonation.” <i>Physical Chemistry Chemical Physics</i>, vol. 26, no. 5, Royal Society of Chemistry (RSC), 2024, pp. 4194–99, doi:<a href=\"https://doi.org/10.1039/d3cp05105f\">10.1039/d3cp05105f</a>.","ama":"Dong C-D, Bauch F, Hu Y, Schumacher S. Charge transfer in superbase n-type doping of PCBM induced by deprotonation. <i>Physical Chemistry Chemical Physics</i>. 2024;26(5):4194-4199. doi:<a href=\"https://doi.org/10.1039/d3cp05105f\">10.1039/d3cp05105f</a>","chicago":"Dong, Chuan-Ding, Fabian Bauch, Yuanyuan Hu, and Stefan Schumacher. “Charge Transfer in Superbase N-Type Doping of PCBM Induced by Deprotonation.” <i>Physical Chemistry Chemical Physics</i> 26, no. 5 (2024): 4194–99. <a href=\"https://doi.org/10.1039/d3cp05105f\">https://doi.org/10.1039/d3cp05105f</a>.","ieee":"C.-D. Dong, F. Bauch, Y. Hu, and S. Schumacher, “Charge transfer in superbase n-type doping of PCBM induced by deprotonation,” <i>Physical Chemistry Chemical Physics</i>, vol. 26, no. 5, pp. 4194–4199, 2024, doi: <a href=\"https://doi.org/10.1039/d3cp05105f\">10.1039/d3cp05105f</a>."},"year":"2024","volume":26,"date_created":"2025-09-12T11:29:33Z","author":[{"full_name":"Dong, Chuan-Ding","last_name":"Dong","first_name":"Chuan-Ding"},{"first_name":"Fabian","last_name":"Bauch","orcid":"0009-0008-6279-077X","id":"61389","full_name":"Bauch, Fabian"},{"last_name":"Hu","full_name":"Hu, Yuanyuan","first_name":"Yuanyuan"},{"first_name":"Stefan","orcid":"0000-0003-4042-4951","last_name":"Schumacher","full_name":"Schumacher, Stefan","id":"27271"}],"date_updated":"2025-09-12T11:30:40Z","publisher":"Royal Society of Chemistry (RSC)","doi":"10.1039/d3cp05105f","title":"Charge transfer in superbase n-type doping of PCBM induced by deprotonation"},{"type":"journal_article","publication":"The Journal of Physical Chemistry C","status":"public","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"790"},{"_id":"230"},{"_id":"429"},{"_id":"35"},{"_id":"27"}],"project":[{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"name":"TRR 142 - Project Area A","_id":"54"},{"name":"TRR 142 - Project Area B","_id":"55"},{"name":"TRR 142 - Subproject A11","_id":"166"},{"name":"TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)","_id":"168"},{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"61357","language":[{"iso":"eng"}],"issue":"41","publication_status":"published","publication_identifier":{"issn":["1932-7447","1932-7455"]},"citation":{"bibtex":"@article{Krenz_Sanna_Gerstmann_Schmidt_2024, title={Understanding and Improving Triplet Exciton Transfer in Sensitized Silicon Solar Cells}, volume={128}, DOI={<a href=\"https://doi.org/10.1021/acs.jpcc.4c05446\">10.1021/acs.jpcc.4c05446</a>}, number={41}, journal={The Journal of Physical Chemistry C}, publisher={American Chemical Society (ACS)}, author={Krenz, Marvin and Sanna, Simone and Gerstmann, Uwe and Schmidt, Wolf Gero}, year={2024}, pages={17774–17778} }","mla":"Krenz, Marvin, et al. “Understanding and Improving Triplet Exciton Transfer in Sensitized Silicon Solar Cells.” <i>The Journal of Physical Chemistry C</i>, vol. 128, no. 41, American Chemical Society (ACS), 2024, pp. 17774–78, doi:<a href=\"https://doi.org/10.1021/acs.jpcc.4c05446\">10.1021/acs.jpcc.4c05446</a>.","short":"M. Krenz, S. Sanna, U. Gerstmann, W.G. Schmidt, The Journal of Physical Chemistry C 128 (2024) 17774–17778.","apa":"Krenz, M., Sanna, S., Gerstmann, U., &#38; Schmidt, W. G. (2024). Understanding and Improving Triplet Exciton Transfer in Sensitized Silicon Solar Cells. <i>The Journal of Physical Chemistry C</i>, <i>128</i>(41), 17774–17778. <a href=\"https://doi.org/10.1021/acs.jpcc.4c05446\">https://doi.org/10.1021/acs.jpcc.4c05446</a>","ama":"Krenz M, Sanna S, Gerstmann U, Schmidt WG. Understanding and Improving Triplet Exciton Transfer in Sensitized Silicon Solar Cells. <i>The Journal of Physical Chemistry C</i>. 2024;128(41):17774-17778. doi:<a href=\"https://doi.org/10.1021/acs.jpcc.4c05446\">10.1021/acs.jpcc.4c05446</a>","chicago":"Krenz, Marvin, Simone Sanna, Uwe Gerstmann, and Wolf Gero Schmidt. “Understanding and Improving Triplet Exciton Transfer in Sensitized Silicon Solar Cells.” <i>The Journal of Physical Chemistry C</i> 128, no. 41 (2024): 17774–78. <a href=\"https://doi.org/10.1021/acs.jpcc.4c05446\">https://doi.org/10.1021/acs.jpcc.4c05446</a>.","ieee":"M. Krenz, S. Sanna, U. Gerstmann, and W. G. Schmidt, “Understanding and Improving Triplet Exciton Transfer in Sensitized Silicon Solar Cells,” <i>The Journal of Physical Chemistry C</i>, vol. 128, no. 41, pp. 17774–17778, 2024, doi: <a href=\"https://doi.org/10.1021/acs.jpcc.4c05446\">10.1021/acs.jpcc.4c05446</a>."},"page":"17774-17778","intvolume":"       128","year":"2024","date_created":"2025-09-18T11:32:33Z","author":[{"first_name":"Marvin","last_name":"Krenz","full_name":"Krenz, Marvin"},{"first_name":"Simone","full_name":"Sanna, Simone","last_name":"Sanna"},{"first_name":"Uwe","full_name":"Gerstmann, Uwe","id":"171","last_name":"Gerstmann","orcid":"0000-0002-4476-223X"},{"orcid":"0000-0002-2717-5076","last_name":"Schmidt","full_name":"Schmidt, Wolf Gero","id":"468","first_name":"Wolf Gero"}],"volume":128,"publisher":"American Chemical Society (ACS)","date_updated":"2025-09-18T11:34:21Z","doi":"10.1021/acs.jpcc.4c05446","title":"Understanding and Improving Triplet Exciton Transfer in Sensitized Silicon Solar Cells"},{"publisher":"Springer Nature Switzerland","date_created":"2025-11-04T09:50:24Z","title":"Optimizing Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL","quality_controlled":"1","year":"2024","language":[{"iso":"eng"}],"publication":"Lecture Notes in Computer Science","abstract":[{"lang":"eng","text":"Most FPGA boards in the HPC domain are well-suited for parallel scaling because of the direct integration of versatile and high-throughput network ports. However, the utilization of their network capabilities is often challenging and error-prone because the whole network stack and communication patterns have to be implemented and managed on the FPGAs. Also, this approach conceptually involves a trade-off between the performance potential of improved communication and the impact of resource consumption for communication infrastructure, since the utilized resources on the FPGAs could otherwise be used for computations. In this work, we investigate this trade-off, firstly, by using synthetic benchmarks to evaluate the different configuration options of the communication framework ACCL and their impact on communication latency and throughput. Finally, we use our findings to implement a shallow water simulation whose scalability heavily depends on low-latency communication. With a suitable configuration of ACCL, good scaling behavior can be shown to all 48 FPGAs installed in the system. Overall, the results show that the availability of inter-FPGA communication frameworks as well as the configurability of framework and network stack are crucial to achieve the best application performance with low latency communication."}],"date_updated":"2025-11-04T09:51:22Z","oa":"1","author":[{"last_name":"Meyer","full_name":"Meyer, Marius","id":"40778","first_name":"Marius"},{"first_name":"Tobias","last_name":"Kenter","id":"3145","full_name":"Kenter, Tobias"},{"last_name":"Petrica","full_name":"Petrica, Lucian","first_name":"Lucian"},{"full_name":"O’Brien, Kenneth","last_name":"O’Brien","first_name":"Kenneth"},{"first_name":"Michaela","full_name":"Blott, Michaela","last_name":"Blott"},{"full_name":"Plessl, Christian","id":"16153","orcid":"0000-0001-5728-9982","last_name":"Plessl","first_name":"Christian"}],"doi":"10.1007/978-3-031-69766-1_9","main_file_link":[{"open_access":"1"}],"publication_identifier":{"isbn":["9783031697654","9783031697661"],"issn":["0302-9743","1611-3349"]},"publication_status":"published","place":"Cham","citation":{"apa":"Meyer, M., Kenter, T., Petrica, L., O’Brien, K., Blott, M., &#38; Plessl, C. (2024). Optimizing Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL. In <i>Lecture Notes in Computer Science</i>. Springer Nature Switzerland. <a href=\"https://doi.org/10.1007/978-3-031-69766-1_9\">https://doi.org/10.1007/978-3-031-69766-1_9</a>","bibtex":"@inbook{Meyer_Kenter_Petrica_O’Brien_Blott_Plessl_2024, place={Cham}, title={Optimizing Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL}, DOI={<a href=\"https://doi.org/10.1007/978-3-031-69766-1_9\">10.1007/978-3-031-69766-1_9</a>}, booktitle={Lecture Notes in Computer Science}, publisher={Springer Nature Switzerland}, author={Meyer, Marius and Kenter, Tobias and Petrica, Lucian and O’Brien, Kenneth and Blott, Michaela and Plessl, Christian}, year={2024} }","mla":"Meyer, Marius, et al. “Optimizing Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL.” <i>Lecture Notes in Computer Science</i>, Springer Nature Switzerland, 2024, doi:<a href=\"https://doi.org/10.1007/978-3-031-69766-1_9\">10.1007/978-3-031-69766-1_9</a>.","short":"M. Meyer, T. Kenter, L. Petrica, K. O’Brien, M. Blott, C. Plessl, in: Lecture Notes in Computer Science, Springer Nature Switzerland, Cham, 2024.","ama":"Meyer M, Kenter T, Petrica L, O’Brien K, Blott M, Plessl C. Optimizing Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL. In: <i>Lecture Notes in Computer Science</i>. Springer Nature Switzerland; 2024. doi:<a href=\"https://doi.org/10.1007/978-3-031-69766-1_9\">10.1007/978-3-031-69766-1_9</a>","ieee":"M. Meyer, T. Kenter, L. Petrica, K. O’Brien, M. Blott, and C. Plessl, “Optimizing Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL,” in <i>Lecture Notes in Computer Science</i>, Cham: Springer Nature Switzerland, 2024.","chicago":"Meyer, Marius, Tobias Kenter, Lucian Petrica, Kenneth O’Brien, Michaela Blott, and Christian Plessl. “Optimizing Communication for Latency Sensitive HPC Applications on up to 48 FPGAs Using ACCL.” In <i>Lecture Notes in Computer Science</i>. Cham: Springer Nature Switzerland, 2024. <a href=\"https://doi.org/10.1007/978-3-031-69766-1_9\">https://doi.org/10.1007/978-3-031-69766-1_9</a>."},"_id":"62067","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"department":[{"_id":"27"},{"_id":"518"}],"user_id":"3145","type":"book_chapter","status":"public"},{"language":[{"iso":"eng"}],"publication":"ACM Transactions on Reconfigurable Technology and Systems","abstract":[{"text":"This manuscript makes the claim of having computed the 9th Dedekind number, D(9). This was done by accelerating the core operation of the process with an efficient FPGA design that outperforms an optimized 64-core CPU reference by 95x. The FPGA execution was parallelized on the Noctua 2 supercomputer at Paderborn University. The resulting value for D(9) is 286386577668298411128469151667598498812366. This value can be verified in two steps. We have made the data file containing the 490 M results available, each of which can be verified separately on CPU, and the whole file sums to our proposed value. The paper explains the mathematical approach in the first part, before putting the focus on a deep dive into the FPGA accelerator implementation followed by a performance analysis. The FPGA implementation was done in Register-Transfer Level using a dual-clock architecture and shows how we achieved an impressive FMax of 450 MHz on the targeted Stratix 10 GX 2,800 FPGAs. The total compute time used was 47,000 FPGA hours.","lang":"eng"}],"publisher":"Association for Computing Machinery (ACM)","date_created":"2024-10-14T07:38:29Z","title":"A Computation of the Ninth Dedekind Number Using FPGA Supercomputing","quality_controlled":"1","issue":"3","year":"2024","_id":"56604","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"department":[{"_id":"27"},{"_id":"518"}],"user_id":"3145","type":"journal_article","status":"public","oa":"1","date_updated":"2025-11-04T09:53:26Z","volume":17,"author":[{"last_name":"Van Hirtum","id":"100210","full_name":"Van Hirtum, Lennart","first_name":"Lennart"},{"last_name":"De Causmaecker","full_name":"De Causmaecker, Patrick","first_name":"Patrick"},{"first_name":"Jens","last_name":"Goemaere","full_name":"Goemaere, Jens"},{"first_name":"Tobias","id":"3145","full_name":"Kenter, Tobias","last_name":"Kenter"},{"first_name":"Heinrich","last_name":"Riebler","full_name":"Riebler, Heinrich","id":"8961"},{"full_name":"Lass, Michael","id":"24135","last_name":"Lass","orcid":"0000-0002-5708-7632","first_name":"Michael"},{"full_name":"Plessl, Christian","id":"16153","orcid":"0000-0001-5728-9982","last_name":"Plessl","first_name":"Christian"}],"doi":"10.1145/3674147","main_file_link":[{"open_access":"1"}],"publication_identifier":{"issn":["1936-7406","1936-7414"]},"publication_status":"published","intvolume":"        17","page":"1-28","citation":{"short":"L. Van Hirtum, P. De Causmaecker, J. Goemaere, T. Kenter, H. Riebler, M. Lass, C. Plessl, ACM Transactions on Reconfigurable Technology and Systems 17 (2024) 1–28.","mla":"Van Hirtum, Lennart, et al. “A Computation of the Ninth Dedekind Number Using FPGA Supercomputing.” <i>ACM Transactions on Reconfigurable Technology and Systems</i>, vol. 17, no. 3, Association for Computing Machinery (ACM), 2024, pp. 1–28, doi:<a href=\"https://doi.org/10.1145/3674147\">10.1145/3674147</a>.","bibtex":"@article{Van Hirtum_De Causmaecker_Goemaere_Kenter_Riebler_Lass_Plessl_2024, title={A Computation of the Ninth Dedekind Number Using FPGA Supercomputing}, volume={17}, DOI={<a href=\"https://doi.org/10.1145/3674147\">10.1145/3674147</a>}, number={3}, journal={ACM Transactions on Reconfigurable Technology and Systems}, publisher={Association for Computing Machinery (ACM)}, author={Van Hirtum, Lennart and De Causmaecker, Patrick and Goemaere, Jens and Kenter, Tobias and Riebler, Heinrich and Lass, Michael and Plessl, Christian}, year={2024}, pages={1–28} }","apa":"Van Hirtum, L., De Causmaecker, P., Goemaere, J., Kenter, T., Riebler, H., Lass, M., &#38; Plessl, C. (2024). A Computation of the Ninth Dedekind Number Using FPGA Supercomputing. <i>ACM Transactions on Reconfigurable Technology and Systems</i>, <i>17</i>(3), 1–28. <a href=\"https://doi.org/10.1145/3674147\">https://doi.org/10.1145/3674147</a>","ieee":"L. Van Hirtum <i>et al.</i>, “A Computation of the Ninth Dedekind Number Using FPGA Supercomputing,” <i>ACM Transactions on Reconfigurable Technology and Systems</i>, vol. 17, no. 3, pp. 1–28, 2024, doi: <a href=\"https://doi.org/10.1145/3674147\">10.1145/3674147</a>.","chicago":"Van Hirtum, Lennart, Patrick De Causmaecker, Jens Goemaere, Tobias Kenter, Heinrich Riebler, Michael Lass, and Christian Plessl. “A Computation of the Ninth Dedekind Number Using FPGA Supercomputing.” <i>ACM Transactions on Reconfigurable Technology and Systems</i> 17, no. 3 (2024): 1–28. <a href=\"https://doi.org/10.1145/3674147\">https://doi.org/10.1145/3674147</a>.","ama":"Van Hirtum L, De Causmaecker P, Goemaere J, et al. A Computation of the Ninth Dedekind Number Using FPGA Supercomputing. <i>ACM Transactions on Reconfigurable Technology and Systems</i>. 2024;17(3):1-28. doi:<a href=\"https://doi.org/10.1145/3674147\">10.1145/3674147</a>"}},{"quality_controlled":"1","publication_status":"published","citation":{"ama":"Olgu K, Kenter T, Nunez-Yanez J, Mcintosh-Smith S. Optimisation and Evaluation of Breadth First Search with oneAPI/SYCL on Intel FPGAs: from Describing Algorithms to Describing Architectures. In: <i>Proceedings of the 12th International Workshop on OpenCL and SYCL</i>. ACM; 2024. doi:<a href=\"https://doi.org/10.1145/3648115.3648134\">10.1145/3648115.3648134</a>","ieee":"K. Olgu, T. Kenter, J. Nunez-Yanez, and S. Mcintosh-Smith, “Optimisation and Evaluation of Breadth First Search with oneAPI/SYCL on Intel FPGAs: from Describing Algorithms to Describing Architectures,” 2024, doi: <a href=\"https://doi.org/10.1145/3648115.3648134\">10.1145/3648115.3648134</a>.","chicago":"Olgu, Kaan, Tobias Kenter, Jose Nunez-Yanez, and Simon Mcintosh-Smith. “Optimisation and Evaluation of Breadth First Search with OneAPI/SYCL on Intel FPGAs: From Describing Algorithms to Describing Architectures.” In <i>Proceedings of the 12th International Workshop on OpenCL and SYCL</i>. ACM, 2024. <a href=\"https://doi.org/10.1145/3648115.3648134\">https://doi.org/10.1145/3648115.3648134</a>.","short":"K. Olgu, T. Kenter, J. Nunez-Yanez, S. Mcintosh-Smith, in: Proceedings of the 12th International Workshop on OpenCL and SYCL, ACM, 2024.","mla":"Olgu, Kaan, et al. “Optimisation and Evaluation of Breadth First Search with OneAPI/SYCL on Intel FPGAs: From Describing Algorithms to Describing Architectures.” <i>Proceedings of the 12th International Workshop on OpenCL and SYCL</i>, ACM, 2024, doi:<a href=\"https://doi.org/10.1145/3648115.3648134\">10.1145/3648115.3648134</a>.","bibtex":"@inproceedings{Olgu_Kenter_Nunez-Yanez_Mcintosh-Smith_2024, title={Optimisation and Evaluation of Breadth First Search with oneAPI/SYCL on Intel FPGAs: from Describing Algorithms to Describing Architectures}, DOI={<a href=\"https://doi.org/10.1145/3648115.3648134\">10.1145/3648115.3648134</a>}, booktitle={Proceedings of the 12th International Workshop on OpenCL and SYCL}, publisher={ACM}, author={Olgu, Kaan and Kenter, Tobias and Nunez-Yanez, Jose and Mcintosh-Smith, Simon}, year={2024} }","apa":"Olgu, K., Kenter, T., Nunez-Yanez, J., &#38; Mcintosh-Smith, S. (2024). Optimisation and Evaluation of Breadth First Search with oneAPI/SYCL on Intel FPGAs: from Describing Algorithms to Describing Architectures. <i>Proceedings of the 12th International Workshop on OpenCL and SYCL</i>. <a href=\"https://doi.org/10.1145/3648115.3648134\">https://doi.org/10.1145/3648115.3648134</a>"},"year":"2024","author":[{"last_name":"Olgu","full_name":"Olgu, Kaan","first_name":"Kaan"},{"full_name":"Kenter, Tobias","id":"3145","last_name":"Kenter","first_name":"Tobias"},{"full_name":"Nunez-Yanez, Jose","last_name":"Nunez-Yanez","first_name":"Jose"},{"first_name":"Simon","last_name":"Mcintosh-Smith","full_name":"Mcintosh-Smith, Simon"}],"date_created":"2024-04-15T07:41:21Z","date_updated":"2025-11-04T09:53:59Z","publisher":"ACM","doi":"10.1145/3648115.3648134","title":"Optimisation and Evaluation of Breadth First Search with oneAPI/SYCL on Intel FPGAs: from Describing Algorithms to Describing Architectures","publication":"Proceedings of the 12th International Workshop on OpenCL and SYCL","type":"conference","status":"public","department":[{"_id":"27"},{"_id":"518"}],"user_id":"3145","_id":"53503","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"language":[{"iso":"eng"}]},{"year":"2024","citation":{"short":"H. Zhang, R. Zuo, S. Yang, A. Trautmann, X. Song, T. Meier, W. Yang, in: High-Order Harmonic Generation in Solids, WORLD SCIENTIFIC, 2024.","bibtex":"@inbook{Zhang_Zuo_Yang_Trautmann_Song_Meier_Yang_2024, title={Analyzing High-Order Harmonic Generation in Solids Based on Semi-Classical Recollision Models}, DOI={<a href=\"https://doi.org/10.1142/9789811279560_0006\">10.1142/9789811279560_0006</a>}, booktitle={High-Order Harmonic Generation in Solids}, publisher={WORLD SCIENTIFIC}, author={Zhang, Hongdan and Zuo, Ruixin and Yang, Shidong and Trautmann, Alexander and Song, Xiaohong and Meier, Torsten and Yang, Weifeng}, year={2024} }","mla":"Zhang, Hongdan, et al. “Analyzing High-Order Harmonic Generation in Solids Based on Semi-Classical Recollision Models.” <i>High-Order Harmonic Generation in Solids</i>, WORLD SCIENTIFIC, 2024, doi:<a href=\"https://doi.org/10.1142/9789811279560_0006\">10.1142/9789811279560_0006</a>.","apa":"Zhang, H., Zuo, R., Yang, S., Trautmann, A., Song, X., Meier, T., &#38; Yang, W. (2024). Analyzing High-Order Harmonic Generation in Solids Based on Semi-Classical Recollision Models. In <i>High-Order Harmonic Generation in Solids</i>. WORLD SCIENTIFIC. <a href=\"https://doi.org/10.1142/9789811279560_0006\">https://doi.org/10.1142/9789811279560_0006</a>","ieee":"H. Zhang <i>et al.</i>, “Analyzing High-Order Harmonic Generation in Solids Based on Semi-Classical Recollision Models,” in <i>High-Order Harmonic Generation in Solids</i>, WORLD SCIENTIFIC, 2024.","chicago":"Zhang, Hongdan, Ruixin Zuo, Shidong Yang, Alexander Trautmann, Xiaohong Song, Torsten Meier, and Weifeng Yang. “Analyzing High-Order Harmonic Generation in Solids Based on Semi-Classical Recollision Models.” In <i>High-Order Harmonic Generation in Solids</i>. WORLD SCIENTIFIC, 2024. <a href=\"https://doi.org/10.1142/9789811279560_0006\">https://doi.org/10.1142/9789811279560_0006</a>.","ama":"Zhang H, Zuo R, Yang S, et al. Analyzing High-Order Harmonic Generation in Solids Based on Semi-Classical Recollision Models. In: <i>High-Order Harmonic Generation in Solids</i>. WORLD SCIENTIFIC; 2024. doi:<a href=\"https://doi.org/10.1142/9789811279560_0006\">10.1142/9789811279560_0006</a>"},"publication_identifier":{"isbn":["9789811279553","9789811279560"]},"publication_status":"published","title":"Analyzing High-Order Harmonic Generation in Solids Based on Semi-Classical Recollision Models","doi":"10.1142/9789811279560_0006","date_updated":"2025-12-05T09:43:37Z","publisher":"WORLD SCIENTIFIC","date_created":"2025-12-05T09:42:23Z","author":[{"first_name":"Hongdan","last_name":"Zhang","full_name":"Zhang, Hongdan"},{"full_name":"Zuo, Ruixin","last_name":"Zuo","first_name":"Ruixin"},{"full_name":"Yang, Shidong","last_name":"Yang","first_name":"Shidong"},{"last_name":"Trautmann","full_name":"Trautmann, Alexander","first_name":"Alexander"},{"first_name":"Xiaohong","last_name":"Song","full_name":"Song, Xiaohong"},{"orcid":"0000-0001-8864-2072","last_name":"Meier","full_name":"Meier, Torsten","id":"344","first_name":"Torsten"},{"last_name":"Yang","full_name":"Yang, Weifeng","first_name":"Weifeng"}],"status":"public","publication":"High-Order Harmonic Generation in Solids","type":"book_chapter","language":[{"iso":"eng"}],"_id":"62916","project":[{"name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen","_id":"53"},{"name":"TRR 142 - Project Area C","_id":"56"},{"name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse","_id":"174"},{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"230"},{"_id":"35"},{"_id":"429"},{"_id":"27"}],"user_id":"16199"},{"_id":"62917","project":[{"_id":"53","name":"TRR 142: Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"_id":"56","name":"TRR 142 - Project Area C"},{"_id":"174","name":"TRR 142 ; TP: C10: Erzeugung und Charakterisierung von Quantenlicht in nichtlinearen Systemen: Eine theoretische Analyse"},{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"27"}],"user_id":"16199","language":[{"iso":"eng"}],"publication":"High-Order Harmonic Generation in Solids","type":"book_chapter","status":"public","publisher":"WORLD SCIENTIFIC","date_updated":"2025-12-05T09:45:31Z","author":[{"first_name":"Matthias","id":"138","full_name":"Reichelt, Matthias","last_name":"Reichelt"},{"full_name":"Zuo, Ruixin","last_name":"Zuo","first_name":"Ruixin"},{"first_name":"Xiaohong","full_name":"Song, Xiaohong","last_name":"Song"},{"last_name":"Yang","full_name":"Yang, Weifeng","first_name":"Weifeng"},{"first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","full_name":"Meier, Torsten","id":"344"}],"date_created":"2025-12-05T09:44:20Z","title":"High-Order Harmonic Generation in Semiconductors with Excitonic Effects","doi":"10.1142/9789811279560_0009","publication_identifier":{"isbn":["9789811279553","9789811279560"]},"publication_status":"published","year":"2024","citation":{"apa":"Reichelt, M., Zuo, R., Song, X., Yang, W., &#38; Meier, T. (2024). High-Order Harmonic Generation in Semiconductors with Excitonic Effects. In <i>High-Order Harmonic Generation in Solids</i>. WORLD SCIENTIFIC. <a href=\"https://doi.org/10.1142/9789811279560_0009\">https://doi.org/10.1142/9789811279560_0009</a>","mla":"Reichelt, Matthias, et al. “High-Order Harmonic Generation in Semiconductors with Excitonic Effects.” <i>High-Order Harmonic Generation in Solids</i>, WORLD SCIENTIFIC, 2024, doi:<a href=\"https://doi.org/10.1142/9789811279560_0009\">10.1142/9789811279560_0009</a>.","short":"M. Reichelt, R. Zuo, X. Song, W. Yang, T. Meier, in: High-Order Harmonic Generation in Solids, WORLD SCIENTIFIC, 2024.","bibtex":"@inbook{Reichelt_Zuo_Song_Yang_Meier_2024, title={High-Order Harmonic Generation in Semiconductors with Excitonic Effects}, DOI={<a href=\"https://doi.org/10.1142/9789811279560_0009\">10.1142/9789811279560_0009</a>}, booktitle={High-Order Harmonic Generation in Solids}, publisher={WORLD SCIENTIFIC}, author={Reichelt, Matthias and Zuo, Ruixin and Song, Xiaohong and Yang, Weifeng and Meier, Torsten}, year={2024} }","chicago":"Reichelt, Matthias, Ruixin Zuo, Xiaohong Song, Weifeng Yang, and Torsten Meier. “High-Order Harmonic Generation in Semiconductors with Excitonic Effects.” In <i>High-Order Harmonic Generation in Solids</i>. WORLD SCIENTIFIC, 2024. <a href=\"https://doi.org/10.1142/9789811279560_0009\">https://doi.org/10.1142/9789811279560_0009</a>.","ieee":"M. Reichelt, R. Zuo, X. Song, W. Yang, and T. Meier, “High-Order Harmonic Generation in Semiconductors with Excitonic Effects,” in <i>High-Order Harmonic Generation in Solids</i>, WORLD SCIENTIFIC, 2024.","ama":"Reichelt M, Zuo R, Song X, Yang W, Meier T. High-Order Harmonic Generation in Semiconductors with Excitonic Effects. In: <i>High-Order Harmonic Generation in Solids</i>. WORLD SCIENTIFIC; 2024. doi:<a href=\"https://doi.org/10.1142/9789811279560_0009\">10.1142/9789811279560_0009</a>"}},{"publisher":"LibreCat University","date_updated":"2025-12-05T09:42:11Z","author":[{"full_name":"Meier, Torsten","id":"344","last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten"},{"full_name":"Ali, Usman","last_name":"Ali","first_name":"Usman"},{"last_name":"Holthaus","full_name":"Holthaus, Martin","first_name":"Martin"}],"date_created":"2025-12-05T09:41:14Z","title":"Floquet dynamics of ultracold atoms in optical lattices with a parametrically modulated trapping potential","doi":"10.5281/ZENODO.11935146","year":"2024","citation":{"chicago":"Meier, Torsten, Usman Ali, and Martin Holthaus. <i>Floquet Dynamics of Ultracold Atoms in Optical Lattices with a Parametrically Modulated Trapping Potential</i>. LibreCat University, 2024. <a href=\"https://doi.org/10.5281/ZENODO.11935146\">https://doi.org/10.5281/ZENODO.11935146</a>.","ieee":"T. Meier, U. Ali, and M. Holthaus, <i>Floquet dynamics of ultracold atoms in optical lattices with a parametrically modulated trapping potential</i>. LibreCat University, 2024.","ama":"Meier T, Ali U, Holthaus M. <i>Floquet Dynamics of Ultracold Atoms in Optical Lattices with a Parametrically Modulated Trapping Potential</i>. LibreCat University; 2024. doi:<a href=\"https://doi.org/10.5281/ZENODO.11935146\">10.5281/ZENODO.11935146</a>","short":"T. Meier, U. Ali, M. Holthaus, Floquet Dynamics of Ultracold Atoms in Optical Lattices with a Parametrically Modulated Trapping Potential, LibreCat University, 2024.","bibtex":"@book{Meier_Ali_Holthaus_2024, title={Floquet dynamics of ultracold atoms in optical lattices with a parametrically modulated trapping potential}, DOI={<a href=\"https://doi.org/10.5281/ZENODO.11935146\">10.5281/ZENODO.11935146</a>}, publisher={LibreCat University}, author={Meier, Torsten and Ali, Usman and Holthaus, Martin}, year={2024} }","mla":"Meier, Torsten, et al. <i>Floquet Dynamics of Ultracold Atoms in Optical Lattices with a Parametrically Modulated Trapping Potential</i>. LibreCat University, 2024, doi:<a href=\"https://doi.org/10.5281/ZENODO.11935146\">10.5281/ZENODO.11935146</a>.","apa":"Meier, T., Ali, U., &#38; Holthaus, M. (2024). <i>Floquet dynamics of ultracold atoms in optical lattices with a parametrically modulated trapping potential</i>. LibreCat University. <a href=\"https://doi.org/10.5281/ZENODO.11935146\">https://doi.org/10.5281/ZENODO.11935146</a>"},"_id":"62915","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"230"},{"_id":"35"},{"_id":"27"}],"user_id":"16199","type":"research_data","status":"public"},{"date_updated":"2025-12-05T13:39:01Z","publisher":"Wiley","author":[{"first_name":"Maja","last_name":"Groll","full_name":"Groll, Maja"},{"id":"46952","full_name":"Bürger, Julius","last_name":"Bürger","first_name":"Julius"},{"full_name":"Caltzidis, Ioannis","id":"87911","last_name":"Caltzidis","first_name":"Ioannis"},{"last_name":"Jöns","full_name":"Jöns, Klaus D.","id":"85353","first_name":"Klaus D."},{"orcid":"0000-0002-2717-5076","last_name":"Schmidt","full_name":"Schmidt, Wolf Gero","id":"468","first_name":"Wolf Gero"},{"first_name":"Uwe","full_name":"Gerstmann, Uwe","id":"171","orcid":"0000-0002-4476-223X","last_name":"Gerstmann"},{"last_name":"Lindner","id":"20797","full_name":"Lindner, Jörg K. N.","first_name":"Jörg K. N."}],"date_created":"2024-06-24T09:46:25Z","title":"DFT‐Assisted Investigation of the Electric Field and Charge Density Distribution of Pristine and Defective 2D WSe<sub>2</sub> by Differential Phase Contrast Imaging","doi":"10.1002/smll.202311635","publication_identifier":{"issn":["1613-6810","1613-6829"]},"publication_status":"published","year":"2024","citation":{"apa":"Groll, M., Bürger, J., Caltzidis, I., Jöns, K. D., Schmidt, W. G., Gerstmann, U., &#38; Lindner, J. K. N. (2024). DFT‐Assisted Investigation of the Electric Field and Charge Density Distribution of Pristine and Defective 2D WSe<sub>2</sub> by Differential Phase Contrast Imaging. <i>Small</i>. <a href=\"https://doi.org/10.1002/smll.202311635\">https://doi.org/10.1002/smll.202311635</a>","bibtex":"@article{Groll_Bürger_Caltzidis_Jöns_Schmidt_Gerstmann_Lindner_2024, title={DFT‐Assisted Investigation of the Electric Field and Charge Density Distribution of Pristine and Defective 2D WSe<sub>2</sub> by Differential Phase Contrast Imaging}, DOI={<a href=\"https://doi.org/10.1002/smll.202311635\">10.1002/smll.202311635</a>}, journal={Small}, publisher={Wiley}, author={Groll, Maja and Bürger, Julius and Caltzidis, Ioannis and Jöns, Klaus D. and Schmidt, Wolf Gero and Gerstmann, Uwe and Lindner, Jörg K. N.}, year={2024} }","mla":"Groll, Maja, et al. “DFT‐Assisted Investigation of the Electric Field and Charge Density Distribution of Pristine and Defective 2D WSe<sub>2</sub> by Differential Phase Contrast Imaging.” <i>Small</i>, Wiley, 2024, doi:<a href=\"https://doi.org/10.1002/smll.202311635\">10.1002/smll.202311635</a>.","short":"M. Groll, J. Bürger, I. Caltzidis, K.D. Jöns, W.G. Schmidt, U. Gerstmann, J.K.N. Lindner, Small (2024).","ama":"Groll M, Bürger J, Caltzidis I, et al. DFT‐Assisted Investigation of the Electric Field and Charge Density Distribution of Pristine and Defective 2D WSe<sub>2</sub> by Differential Phase Contrast Imaging. <i>Small</i>. Published online 2024. doi:<a href=\"https://doi.org/10.1002/smll.202311635\">10.1002/smll.202311635</a>","chicago":"Groll, Maja, Julius Bürger, Ioannis Caltzidis, Klaus D. Jöns, Wolf Gero Schmidt, Uwe Gerstmann, and Jörg K. N. Lindner. “DFT‐Assisted Investigation of the Electric Field and Charge Density Distribution of Pristine and Defective 2D WSe<sub>2</sub> by Differential Phase Contrast Imaging.” <i>Small</i>, 2024. <a href=\"https://doi.org/10.1002/smll.202311635\">https://doi.org/10.1002/smll.202311635</a>.","ieee":"M. Groll <i>et al.</i>, “DFT‐Assisted Investigation of the Electric Field and Charge Density Distribution of Pristine and Defective 2D WSe<sub>2</sub> by Differential Phase Contrast Imaging,” <i>Small</i>, 2024, doi: <a href=\"https://doi.org/10.1002/smll.202311635\">10.1002/smll.202311635</a>."},"_id":"54868","project":[{"_id":"53","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"name":"TRR 142 - A: TRR 142 - Project Area A","_id":"54"},{"_id":"55","name":"TRR 142 - B: TRR 142 - Project Area B"},{"_id":"166","name":"TRR 142 - A11: TRR 142 - Subproject A11"},{"name":"TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)","_id":"168"},{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"790"},{"_id":"642"},{"_id":"286"},{"_id":"429"},{"_id":"230"},{"_id":"27"},{"_id":"35"},{"_id":"169"}],"user_id":"16199","article_type":"original","language":[{"iso":"eng"}],"publication":"Small","type":"journal_article","abstract":[{"text":"<jats:title>Abstract</jats:title><jats:p>Most properties of solid materials are defined by their internal electric field and charge density distributions which so far are difficult to measure with high spatial resolution. Especially for 2D materials, the atomic electric fields influence the optoelectronic properties. In this study, the atomic‐scale electric field and charge density distribution of WSe<jats:sub>2</jats:sub> bi‐ and trilayers are revealed using an emerging microscopy technique, differential phase contrast (DPC) imaging in scanning transmission electron microscopy (STEM). For pristine material, a higher positive charge density located at the selenium atomic columns compared to the tungsten atomic columns is obtained and tentatively explained by a coherent scattering effect. Furthermore, the change in the electric field distribution induced by a missing selenium atomic column is investigated. A characteristic electric field distribution in the vicinity of the defect with locally reduced magnitudes compared to the pristine lattice is observed. This effect is accompanied by a considerable inward relaxation of the surrounding lattice, which according to first principles DFT calculation is fully compatible with a missing column of Se atoms. This shows that DPC imaging, as an electric field sensitive technique, provides additional and remarkable information to the otherwise only structural analysis obtained with conventional STEM imaging.</jats:p>","lang":"eng"}],"status":"public"},{"language":[{"iso":"eng"}],"article_number":"012094","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"790"},{"_id":"230"},{"_id":"429"},{"_id":"27"},{"_id":"35"}],"user_id":"16199","_id":"54856","project":[{"_id":"53","name":"TRR 142: TRR 142 - Maßgeschneiderte nichtlineare Photonik: Von grundlegenden Konzepten zu funktionellen Strukturen"},{"name":"TRR 142 - A: TRR 142 - Project Area A","_id":"54"},{"_id":"55","name":"TRR 142 - B: TRR 142 - Project Area B"},{"_id":"166","name":"TRR 142 - A11: TRR 142 - Subproject A11"},{"_id":"168","name":"TRR 142 - B07: TRR 142 - Polaronen-Einfluss auf die optischen Eigenschaften von Lithiumniobat (B07*)"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"status":"public","abstract":[{"text":"<jats:title>Abstract</jats:title>\r\n               <jats:p>Theoretical spectroscopy based on double perturbation theory is typically challenged by systems with large orbital hyperfine splitting. Therefore, we here derive a rigorous, non-perturbative scheme starting from Dirac’s equation which allows to calculate the contribution of the orbital HFI for complex structures including heavy atoms with strong spin-orbit coupling (SOC). Using the PAW formalism, the method has been implemented in the software package Quantum ESPRESSO. We show that the ‘orbital part’ actually scales with SOC strength if orbital quenching is hindered by low local symmetry, i.e. in case of dimers or atoms at surfaces. This holds true in particular when the unpaired electron is localized in quasi-atomic <jats:italic>p</jats:italic>-like orbitals. Here, the orbital part is by far not negligible, but becomes dominant by surpassing the dipolar contribution by a factor of five.</jats:p>","lang":"eng"}],"publication":"Journal of Physics: Conference Series","type":"journal_article","doi":"10.1088/1742-6596/2701/1/012094","title":"Relativistic calculation of the orbital hyperfine splitting in complex microscopic structures","volume":2701,"date_created":"2024-06-24T06:26:02Z","author":[{"last_name":"Franzke","full_name":"Franzke, Katharina","first_name":"Katharina"},{"orcid":"0000-0002-2717-5076","last_name":"Schmidt","id":"468","full_name":"Schmidt, Wolf Gero","first_name":"Wolf Gero"},{"id":"171","full_name":"Gerstmann, Uwe","orcid":"0000-0002-4476-223X","last_name":"Gerstmann","first_name":"Uwe"}],"publisher":"IOP Publishing","date_updated":"2025-12-05T13:36:01Z","intvolume":"      2701","citation":{"ieee":"K. Franzke, W. G. Schmidt, and U. Gerstmann, “Relativistic calculation of the orbital hyperfine splitting in complex microscopic structures,” <i>Journal of Physics: Conference Series</i>, vol. 2701, no. 1, Art. no. 012094, 2024, doi: <a href=\"https://doi.org/10.1088/1742-6596/2701/1/012094\">10.1088/1742-6596/2701/1/012094</a>.","chicago":"Franzke, Katharina, Wolf Gero Schmidt, and Uwe Gerstmann. “Relativistic Calculation of the Orbital Hyperfine Splitting in Complex Microscopic Structures.” <i>Journal of Physics: Conference Series</i> 2701, no. 1 (2024). <a href=\"https://doi.org/10.1088/1742-6596/2701/1/012094\">https://doi.org/10.1088/1742-6596/2701/1/012094</a>.","ama":"Franzke K, Schmidt WG, Gerstmann U. Relativistic calculation of the orbital hyperfine splitting in complex microscopic structures. <i>Journal of Physics: Conference Series</i>. 2024;2701(1). doi:<a href=\"https://doi.org/10.1088/1742-6596/2701/1/012094\">10.1088/1742-6596/2701/1/012094</a>","apa":"Franzke, K., Schmidt, W. G., &#38; Gerstmann, U. (2024). Relativistic calculation of the orbital hyperfine splitting in complex microscopic structures. <i>Journal of Physics: Conference Series</i>, <i>2701</i>(1), Article 012094. <a href=\"https://doi.org/10.1088/1742-6596/2701/1/012094\">https://doi.org/10.1088/1742-6596/2701/1/012094</a>","short":"K. Franzke, W.G. Schmidt, U. Gerstmann, Journal of Physics: Conference Series 2701 (2024).","bibtex":"@article{Franzke_Schmidt_Gerstmann_2024, title={Relativistic calculation of the orbital hyperfine splitting in complex microscopic structures}, volume={2701}, DOI={<a href=\"https://doi.org/10.1088/1742-6596/2701/1/012094\">10.1088/1742-6596/2701/1/012094</a>}, number={1012094}, journal={Journal of Physics: Conference Series}, publisher={IOP Publishing}, author={Franzke, Katharina and Schmidt, Wolf Gero and Gerstmann, Uwe}, year={2024} }","mla":"Franzke, Katharina, et al. “Relativistic Calculation of the Orbital Hyperfine Splitting in Complex Microscopic Structures.” <i>Journal of Physics: Conference Series</i>, vol. 2701, no. 1, 012094, IOP Publishing, 2024, doi:<a href=\"https://doi.org/10.1088/1742-6596/2701/1/012094\">10.1088/1742-6596/2701/1/012094</a>."},"year":"2024","issue":"1","publication_identifier":{"issn":["1742-6588","1742-6596"]},"publication_status":"published"},{"page":"8949-8960","intvolume":"       146","citation":{"apa":"Diederich, J., Velasquez Rojas, J., Zare Pour, M. A., Ruiz Alvarado, I. A., Paszuk, A., Sciotto, R., Höhn, C., Schwarzburg, K., Ostheimer, D., Eichberger, R., Schmidt, W. G., Hannappel, T., van de Krol, R., &#38; Friedrich, D. (2024). Unraveling Electron Dynamics in p-type Indium Phosphide (100): A Time-Resolved Two-Photon Photoemission Study. <i>Journal of the American Chemical Society</i>, <i>146</i>(13), 8949–8960. <a href=\"https://doi.org/10.1021/jacs.3c12487\">https://doi.org/10.1021/jacs.3c12487</a>","mla":"Diederich, Jonathan, et al. “Unraveling Electron Dynamics in P-Type Indium Phosphide (100): A Time-Resolved Two-Photon Photoemission Study.” <i>Journal of the American Chemical Society</i>, vol. 146, no. 13, American Chemical Society (ACS), 2024, pp. 8949–60, doi:<a href=\"https://doi.org/10.1021/jacs.3c12487\">10.1021/jacs.3c12487</a>.","short":"J. Diederich, J. Velasquez Rojas, M.A. Zare Pour, I.A. Ruiz Alvarado, A. Paszuk, R. Sciotto, C. Höhn, K. Schwarzburg, D. Ostheimer, R. Eichberger, W.G. Schmidt, T. Hannappel, R. van de Krol, D. Friedrich, Journal of the American Chemical Society 146 (2024) 8949–8960.","bibtex":"@article{Diederich_Velasquez Rojas_Zare Pour_Ruiz Alvarado_Paszuk_Sciotto_Höhn_Schwarzburg_Ostheimer_Eichberger_et al._2024, title={Unraveling Electron Dynamics in p-type Indium Phosphide (100): A Time-Resolved Two-Photon Photoemission Study}, volume={146}, DOI={<a href=\"https://doi.org/10.1021/jacs.3c12487\">10.1021/jacs.3c12487</a>}, number={13}, journal={Journal of the American Chemical Society}, publisher={American Chemical Society (ACS)}, author={Diederich, Jonathan and Velasquez Rojas, Jennifer and Zare Pour, Mohammad Amin and Ruiz Alvarado, Isaac Azahel and Paszuk, Agnieszka and Sciotto, Rachele and Höhn, Christian and Schwarzburg, Klaus and Ostheimer, David and Eichberger, Rainer and et al.}, year={2024}, pages={8949–8960} }","chicago":"Diederich, Jonathan, Jennifer Velasquez Rojas, Mohammad Amin Zare Pour, Isaac Azahel Ruiz Alvarado, Agnieszka Paszuk, Rachele Sciotto, Christian Höhn, et al. “Unraveling Electron Dynamics in P-Type Indium Phosphide (100): A Time-Resolved Two-Photon Photoemission Study.” <i>Journal of the American Chemical Society</i> 146, no. 13 (2024): 8949–60. <a href=\"https://doi.org/10.1021/jacs.3c12487\">https://doi.org/10.1021/jacs.3c12487</a>.","ieee":"J. Diederich <i>et al.</i>, “Unraveling Electron Dynamics in p-type Indium Phosphide (100): A Time-Resolved Two-Photon Photoemission Study,” <i>Journal of the American Chemical Society</i>, vol. 146, no. 13, pp. 8949–8960, 2024, doi: <a href=\"https://doi.org/10.1021/jacs.3c12487\">10.1021/jacs.3c12487</a>.","ama":"Diederich J, Velasquez Rojas J, Zare Pour MA, et al. Unraveling Electron Dynamics in p-type Indium Phosphide (100): A Time-Resolved Two-Photon Photoemission Study. <i>Journal of the American Chemical Society</i>. 2024;146(13):8949-8960. doi:<a href=\"https://doi.org/10.1021/jacs.3c12487\">10.1021/jacs.3c12487</a>"},"year":"2024","issue":"13","publication_identifier":{"issn":["0002-7863","1520-5126"]},"publication_status":"published","doi":"10.1021/jacs.3c12487","title":"Unraveling Electron Dynamics in p-type Indium Phosphide (100): A Time-Resolved Two-Photon Photoemission Study","volume":146,"date_created":"2024-06-24T09:42:46Z","author":[{"last_name":"Diederich","full_name":"Diederich, Jonathan","first_name":"Jonathan"},{"first_name":"Jennifer","full_name":"Velasquez Rojas, Jennifer","last_name":"Velasquez Rojas"},{"last_name":"Zare Pour","full_name":"Zare Pour, Mohammad Amin","first_name":"Mohammad Amin"},{"full_name":"Ruiz Alvarado, Isaac Azahel","id":"79462","orcid":"0000-0002-4710-1170","last_name":"Ruiz Alvarado","first_name":"Isaac Azahel"},{"first_name":"Agnieszka","full_name":"Paszuk, Agnieszka","last_name":"Paszuk"},{"first_name":"Rachele","full_name":"Sciotto, Rachele","last_name":"Sciotto"},{"full_name":"Höhn, Christian","last_name":"Höhn","first_name":"Christian"},{"first_name":"Klaus","last_name":"Schwarzburg","full_name":"Schwarzburg, Klaus"},{"first_name":"David","last_name":"Ostheimer","full_name":"Ostheimer, David"},{"first_name":"Rainer","last_name":"Eichberger","full_name":"Eichberger, Rainer"},{"first_name":"Wolf Gero","full_name":"Schmidt, Wolf Gero","id":"468","orcid":"0000-0002-2717-5076","last_name":"Schmidt"},{"first_name":"Thomas","last_name":"Hannappel","full_name":"Hannappel, Thomas"},{"first_name":"Roel","full_name":"van de Krol, Roel","last_name":"van de Krol"},{"full_name":"Friedrich, Dennis","last_name":"Friedrich","first_name":"Dennis"}],"date_updated":"2025-12-05T13:37:59Z","publisher":"American Chemical Society (ACS)","status":"public","publication":"Journal of the American Chemical Society","type":"journal_article","language":[{"iso":"eng"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"230"},{"_id":"27"},{"_id":"35"}],"user_id":"16199","_id":"54866","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}]},{"publication_identifier":{"issn":["2571-9637"]},"publication_status":"published","page":"79-87","intvolume":"         7","citation":{"ieee":"R. Sciotto, I. A. Ruiz Alvarado, and W. G. Schmidt, “Substrate Doping and Defect Influence on P-Rich InP(001):H Surface Properties,” <i>Surfaces</i>, vol. 7, no. 1, pp. 79–87, 2024, doi: <a href=\"https://doi.org/10.3390/surfaces7010006\">10.3390/surfaces7010006</a>.","chicago":"Sciotto, Rachele, Isaac Azahel Ruiz Alvarado, and Wolf Gero Schmidt. “Substrate Doping and Defect Influence on P-Rich InP(001):H Surface Properties.” <i>Surfaces</i> 7, no. 1 (2024): 79–87. <a href=\"https://doi.org/10.3390/surfaces7010006\">https://doi.org/10.3390/surfaces7010006</a>.","ama":"Sciotto R, Ruiz Alvarado IA, Schmidt WG. Substrate Doping and Defect Influence on P-Rich InP(001):H Surface Properties. <i>Surfaces</i>. 2024;7(1):79-87. doi:<a href=\"https://doi.org/10.3390/surfaces7010006\">10.3390/surfaces7010006</a>","apa":"Sciotto, R., Ruiz Alvarado, I. A., &#38; Schmidt, W. G. (2024). Substrate Doping and Defect Influence on P-Rich InP(001):H Surface Properties. <i>Surfaces</i>, <i>7</i>(1), 79–87. <a href=\"https://doi.org/10.3390/surfaces7010006\">https://doi.org/10.3390/surfaces7010006</a>","short":"R. Sciotto, I.A. Ruiz Alvarado, W.G. Schmidt, Surfaces 7 (2024) 79–87.","bibtex":"@article{Sciotto_Ruiz Alvarado_Schmidt_2024, title={Substrate Doping and Defect Influence on P-Rich InP(001):H Surface Properties}, volume={7}, DOI={<a href=\"https://doi.org/10.3390/surfaces7010006\">10.3390/surfaces7010006</a>}, number={1}, journal={Surfaces}, publisher={MDPI AG}, author={Sciotto, Rachele and Ruiz Alvarado, Isaac Azahel and Schmidt, Wolf Gero}, year={2024}, pages={79–87} }","mla":"Sciotto, Rachele, et al. “Substrate Doping and Defect Influence on P-Rich InP(001):H Surface Properties.” <i>Surfaces</i>, vol. 7, no. 1, MDPI AG, 2024, pp. 79–87, doi:<a href=\"https://doi.org/10.3390/surfaces7010006\">10.3390/surfaces7010006</a>."},"volume":7,"author":[{"last_name":"Sciotto","full_name":"Sciotto, Rachele","first_name":"Rachele"},{"orcid":"0000-0002-4710-1170","last_name":"Ruiz Alvarado","full_name":"Ruiz Alvarado, Isaac Azahel","id":"79462","first_name":"Isaac Azahel"},{"first_name":"Wolf Gero","id":"468","full_name":"Schmidt, Wolf Gero","orcid":"0000-0002-2717-5076","last_name":"Schmidt"}],"date_updated":"2025-12-05T13:36:19Z","doi":"10.3390/surfaces7010006","type":"journal_article","status":"public","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"230"},{"_id":"27"},{"_id":"35"}],"user_id":"16199","_id":"54855","project":[{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"issue":"1","year":"2024","date_created":"2024-06-24T06:24:26Z","publisher":"MDPI AG","title":"Substrate Doping and Defect Influence on P-Rich InP(001):H Surface Properties","publication":"Surfaces","abstract":[{"text":"<jats:p>Density-functional theory calculations on P-rich InP(001):H surfaces are presented. Depending on temperature, pressure and substrate doping, hydrogen desorption or adsorption will occur and influence the surface electronic properties. For p-doped samples, the charge transition levels of the P dangling bond defects resulting from H desorption will lead to Fermi level pinning in the lower half of the band gap. This explains recent experimental data. For n-doped substrates, H-deficient surfaces are the ground-state structure. This will lead to Fermi level pinning below the bulk conduction band minimum. Surface defects resulting from the adsorption of additional hydrogen can be expected as well, but affect the surface electronic properties less than H desorption.</jats:p>","lang":"eng"}],"language":[{"iso":"eng"}]},{"type":"journal_article","publication":"Surface Science Reports","status":"public","project":[{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"54869","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"230"},{"_id":"27"},{"_id":"35"}],"article_number":"100629","language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["0167-5729"]},"issue":"2","year":"2024","citation":{"ama":"Pfnür H, Tegenkamp C, Sanna S, et al. Atomic wires on substrates: Physics between one and two dimensions. <i>Surface Science Reports</i>. 2024;79(2). doi:<a href=\"https://doi.org/10.1016/j.surfrep.2024.100629\">10.1016/j.surfrep.2024.100629</a>","ieee":"H. Pfnür <i>et al.</i>, “Atomic wires on substrates: Physics between one and two dimensions,” <i>Surface Science Reports</i>, vol. 79, no. 2, Art. no. 100629, 2024, doi: <a href=\"https://doi.org/10.1016/j.surfrep.2024.100629\">10.1016/j.surfrep.2024.100629</a>.","chicago":"Pfnür, H., C. Tegenkamp, S. Sanna, E. Jeckelmann, M. Horn-von Hoegen, U. Bovensiepen, N. Esser, et al. “Atomic Wires on Substrates: Physics between One and Two Dimensions.” <i>Surface Science Reports</i> 79, no. 2 (2024). <a href=\"https://doi.org/10.1016/j.surfrep.2024.100629\">https://doi.org/10.1016/j.surfrep.2024.100629</a>.","apa":"Pfnür, H., Tegenkamp, C., Sanna, S., Jeckelmann, E., Horn-von Hoegen, M., Bovensiepen, U., Esser, N., Schmidt, W. G., Dähne, M., Wippermann, S., Bechstedt, F., Bode, M., Claessen, R., Ernstorfer, R., Hogan, C., Ligges, M., Pucci, A., Schäfer, J., Speiser, E., … Wollschläger, J. (2024). Atomic wires on substrates: Physics between one and two dimensions. <i>Surface Science Reports</i>, <i>79</i>(2), Article 100629. <a href=\"https://doi.org/10.1016/j.surfrep.2024.100629\">https://doi.org/10.1016/j.surfrep.2024.100629</a>","short":"H. Pfnür, C. Tegenkamp, S. Sanna, E. Jeckelmann, M. Horn-von Hoegen, U. Bovensiepen, N. Esser, W.G. Schmidt, M. Dähne, S. Wippermann, F. Bechstedt, M. Bode, R. Claessen, R. Ernstorfer, C. Hogan, M. Ligges, A. Pucci, J. Schäfer, E. Speiser, M. Wolf, J. Wollschläger, Surface Science Reports 79 (2024).","bibtex":"@article{Pfnür_Tegenkamp_Sanna_Jeckelmann_Horn-von Hoegen_Bovensiepen_Esser_Schmidt_Dähne_Wippermann_et al._2024, title={Atomic wires on substrates: Physics between one and two dimensions}, volume={79}, DOI={<a href=\"https://doi.org/10.1016/j.surfrep.2024.100629\">10.1016/j.surfrep.2024.100629</a>}, number={2100629}, journal={Surface Science Reports}, publisher={Elsevier BV}, author={Pfnür, H. and Tegenkamp, C. and Sanna, S. and Jeckelmann, E. and Horn-von Hoegen, M. and Bovensiepen, U. and Esser, N. and Schmidt, Wolf Gero and Dähne, M. and Wippermann, S. and et al.}, year={2024} }","mla":"Pfnür, H., et al. “Atomic Wires on Substrates: Physics between One and Two Dimensions.” <i>Surface Science Reports</i>, vol. 79, no. 2, 100629, Elsevier BV, 2024, doi:<a href=\"https://doi.org/10.1016/j.surfrep.2024.100629\">10.1016/j.surfrep.2024.100629</a>."},"intvolume":"        79","date_updated":"2025-12-05T13:36:47Z","publisher":"Elsevier BV","author":[{"full_name":"Pfnür, H.","last_name":"Pfnür","first_name":"H."},{"first_name":"C.","full_name":"Tegenkamp, C.","last_name":"Tegenkamp"},{"first_name":"S.","last_name":"Sanna","full_name":"Sanna, S."},{"first_name":"E.","last_name":"Jeckelmann","full_name":"Jeckelmann, E."},{"first_name":"M.","full_name":"Horn-von Hoegen, M.","last_name":"Horn-von Hoegen"},{"first_name":"U.","full_name":"Bovensiepen, U.","last_name":"Bovensiepen"},{"last_name":"Esser","full_name":"Esser, N.","first_name":"N."},{"orcid":"0000-0002-2717-5076","last_name":"Schmidt","id":"468","full_name":"Schmidt, Wolf Gero","first_name":"Wolf Gero"},{"full_name":"Dähne, M.","last_name":"Dähne","first_name":"M."},{"full_name":"Wippermann, S.","last_name":"Wippermann","first_name":"S."},{"full_name":"Bechstedt, F.","last_name":"Bechstedt","first_name":"F."},{"full_name":"Bode, M.","last_name":"Bode","first_name":"M."},{"first_name":"R.","full_name":"Claessen, R.","last_name":"Claessen"},{"last_name":"Ernstorfer","full_name":"Ernstorfer, R.","first_name":"R."},{"first_name":"C.","last_name":"Hogan","full_name":"Hogan, C."},{"first_name":"M.","last_name":"Ligges","full_name":"Ligges, M."},{"full_name":"Pucci, A.","last_name":"Pucci","first_name":"A."},{"full_name":"Schäfer, J.","last_name":"Schäfer","first_name":"J."},{"first_name":"E.","last_name":"Speiser","full_name":"Speiser, E."},{"full_name":"Wolf, M.","last_name":"Wolf","first_name":"M."},{"first_name":"J.","last_name":"Wollschläger","full_name":"Wollschläger, J."}],"date_created":"2024-06-24T09:50:37Z","volume":79,"title":"Atomic wires on substrates: Physics between one and two dimensions","doi":"10.1016/j.surfrep.2024.100629"}]