[{"year":"2014","page":"70-78","citation":{"ama":"Sanna S, Hölscher R, Schmidt WG. Temperature dependent LiNbO3(0001): Surface reconstruction and surface charge. <i>Applied Surface Science</i>. Published online 2014:70-78. doi:<a href=\"https://doi.org/10.1016/j.apsusc.2014.01.104\">10.1016/j.apsusc.2014.01.104</a>","ieee":"S. Sanna, R. Hölscher, and W. G. Schmidt, “Temperature dependent LiNbO3(0001): Surface reconstruction and surface charge,” <i>Applied Surface Science</i>, pp. 70–78, 2014, doi: <a href=\"https://doi.org/10.1016/j.apsusc.2014.01.104\">10.1016/j.apsusc.2014.01.104</a>.","chicago":"Sanna, S., R. Hölscher, and Wolf Gero Schmidt. “Temperature Dependent LiNbO3(0001): Surface Reconstruction and Surface Charge.” <i>Applied Surface Science</i>, 2014, 70–78. <a href=\"https://doi.org/10.1016/j.apsusc.2014.01.104\">https://doi.org/10.1016/j.apsusc.2014.01.104</a>.","apa":"Sanna, S., Hölscher, R., &#38; Schmidt, W. G. (2014). Temperature dependent LiNbO3(0001): Surface reconstruction and surface charge. <i>Applied Surface Science</i>, 70–78. <a href=\"https://doi.org/10.1016/j.apsusc.2014.01.104\">https://doi.org/10.1016/j.apsusc.2014.01.104</a>","short":"S. Sanna, R. Hölscher, W.G. Schmidt, Applied Surface Science (2014) 70–78.","mla":"Sanna, S., et al. “Temperature Dependent LiNbO3(0001): Surface Reconstruction and Surface Charge.” <i>Applied Surface Science</i>, 2014, pp. 70–78, doi:<a href=\"https://doi.org/10.1016/j.apsusc.2014.01.104\">10.1016/j.apsusc.2014.01.104</a>.","bibtex":"@article{Sanna_Hölscher_Schmidt_2014, title={Temperature dependent LiNbO3(0001): Surface reconstruction and surface charge}, DOI={<a href=\"https://doi.org/10.1016/j.apsusc.2014.01.104\">10.1016/j.apsusc.2014.01.104</a>}, journal={Applied Surface Science}, author={Sanna, S. and Hölscher, R. and Schmidt, Wolf Gero}, year={2014}, pages={70–78} }"},"publication_identifier":{"issn":["0169-4332"]},"publication_status":"published","title":"Temperature dependent LiNbO3(0001): Surface reconstruction and surface charge","doi":"10.1016/j.apsusc.2014.01.104","date_updated":"2025-12-05T10:31:53Z","author":[{"last_name":"Sanna","full_name":"Sanna, S.","first_name":"S."},{"last_name":"Hölscher","full_name":"Hölscher, R.","first_name":"R."},{"first_name":"Wolf Gero","full_name":"Schmidt, Wolf Gero","id":"468","last_name":"Schmidt","orcid":"0000-0002-2717-5076"}],"date_created":"2019-09-30T13:40:10Z","status":"public","publication":"Applied Surface Science","type":"journal_article","language":[{"iso":"eng"}],"_id":"13515","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"TRR 142","_id":"53"},{"_id":"55","name":"TRR 142 - Project Area B"},{"name":"TRR 142 - Subproject B3","_id":"68"},{"_id":"69","name":"TRR 142 - Subproject B4"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"35"},{"_id":"230"},{"_id":"429"},{"_id":"27"}],"user_id":"16199"},{"language":[{"iso":"eng"}],"_id":"13508","project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"35"},{"_id":"230"},{"_id":"27"}],"user_id":"16199","status":"public","publication":"The Journal of Physical Chemistry C","type":"journal_article","title":"Adsorption of PTCDA on Terraces and at Steps Sites of the KCl(100) Surface","doi":"10.1021/jp509663s","date_updated":"2025-12-05T10:35:20Z","volume":118,"author":[{"first_name":"Q.","last_name":"Guo","full_name":"Guo, Q."},{"last_name":"Paulheim","full_name":"Paulheim, A.","first_name":"A."},{"first_name":"M.","full_name":"Sokolowski, M.","last_name":"Sokolowski"},{"last_name":"Aldahhak","full_name":"Aldahhak, Hazem","first_name":"Hazem"},{"first_name":"E.","last_name":"Rauls","full_name":"Rauls, E."},{"id":"468","full_name":"Schmidt, Wolf Gero","orcid":"0000-0002-2717-5076","last_name":"Schmidt","first_name":"Wolf Gero"}],"date_created":"2019-09-30T13:26:17Z","year":"2014","intvolume":"       118","page":"29911-29918","citation":{"bibtex":"@article{Guo_Paulheim_Sokolowski_Aldahhak_Rauls_Schmidt_2014, title={Adsorption of PTCDA on Terraces and at Steps Sites of the KCl(100) Surface}, volume={118}, DOI={<a href=\"https://doi.org/10.1021/jp509663s\">10.1021/jp509663s</a>}, journal={The Journal of Physical Chemistry C}, author={Guo, Q. and Paulheim, A. and Sokolowski, M. and Aldahhak, Hazem and Rauls, E. and Schmidt, Wolf Gero}, year={2014}, pages={29911–29918} }","mla":"Guo, Q., et al. “Adsorption of PTCDA on Terraces and at Steps Sites of the KCl(100) Surface.” <i>The Journal of Physical Chemistry C</i>, vol. 118, 2014, pp. 29911–18, doi:<a href=\"https://doi.org/10.1021/jp509663s\">10.1021/jp509663s</a>.","short":"Q. Guo, A. Paulheim, M. Sokolowski, H. Aldahhak, E. Rauls, W.G. Schmidt, The Journal of Physical Chemistry C 118 (2014) 29911–29918.","apa":"Guo, Q., Paulheim, A., Sokolowski, M., Aldahhak, H., Rauls, E., &#38; Schmidt, W. G. (2014). Adsorption of PTCDA on Terraces and at Steps Sites of the KCl(100) Surface. <i>The Journal of Physical Chemistry C</i>, <i>118</i>, 29911–29918. <a href=\"https://doi.org/10.1021/jp509663s\">https://doi.org/10.1021/jp509663s</a>","ieee":"Q. Guo, A. Paulheim, M. Sokolowski, H. Aldahhak, E. Rauls, and W. G. Schmidt, “Adsorption of PTCDA on Terraces and at Steps Sites of the KCl(100) Surface,” <i>The Journal of Physical Chemistry C</i>, vol. 118, pp. 29911–29918, 2014, doi: <a href=\"https://doi.org/10.1021/jp509663s\">10.1021/jp509663s</a>.","chicago":"Guo, Q., A. Paulheim, M. Sokolowski, Hazem Aldahhak, E. Rauls, and Wolf Gero Schmidt. “Adsorption of PTCDA on Terraces and at Steps Sites of the KCl(100) Surface.” <i>The Journal of Physical Chemistry C</i> 118 (2014): 29911–18. <a href=\"https://doi.org/10.1021/jp509663s\">https://doi.org/10.1021/jp509663s</a>.","ama":"Guo Q, Paulheim A, Sokolowski M, Aldahhak H, Rauls E, Schmidt WG. Adsorption of PTCDA on Terraces and at Steps Sites of the KCl(100) Surface. <i>The Journal of Physical Chemistry C</i>. 2014;118:29911-29918. doi:<a href=\"https://doi.org/10.1021/jp509663s\">10.1021/jp509663s</a>"},"publication_identifier":{"issn":["1932-7447","1932-7455"]},"publication_status":"published"},{"author":[{"first_name":"Hong","last_name":"Liu","full_name":"Liu, Hong"},{"first_name":"Stefan","full_name":"Schumacher, Stefan","id":"27271","orcid":"0000-0003-4042-4951","last_name":"Schumacher"},{"id":"344","full_name":"Meier, Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten"}],"date_created":"2020-02-10T11:55:39Z","volume":89,"date_updated":"2025-12-05T14:51:59Z","doi":"10.1103/physrevb.89.155407","title":"Influence of Coulomb-induced band couplings on linear excitonic absorption spectra of semiconducting carbon nanotubes","issue":"15","publication_status":"published","publication_identifier":{"issn":["1098-0121","1550-235X"]},"citation":{"short":"H. Liu, S. Schumacher, T. Meier, Physical Review B 89 (2014).","bibtex":"@article{Liu_Schumacher_Meier_2014, title={Influence of Coulomb-induced band couplings on linear excitonic absorption spectra of semiconducting carbon nanotubes}, volume={89}, DOI={<a href=\"https://doi.org/10.1103/physrevb.89.155407\">10.1103/physrevb.89.155407</a>}, number={15155407}, journal={Physical Review B}, author={Liu, Hong and Schumacher, Stefan and Meier, Torsten}, year={2014} }","mla":"Liu, Hong, et al. “Influence of Coulomb-Induced Band Couplings on Linear Excitonic Absorption Spectra of Semiconducting Carbon Nanotubes.” <i>Physical Review B</i>, vol. 89, no. 15, 155407, 2014, doi:<a href=\"https://doi.org/10.1103/physrevb.89.155407\">10.1103/physrevb.89.155407</a>.","apa":"Liu, H., Schumacher, S., &#38; Meier, T. (2014). Influence of Coulomb-induced band couplings on linear excitonic absorption spectra of semiconducting carbon nanotubes. <i>Physical Review B</i>, <i>89</i>(15), Article 155407. <a href=\"https://doi.org/10.1103/physrevb.89.155407\">https://doi.org/10.1103/physrevb.89.155407</a>","ieee":"H. Liu, S. Schumacher, and T. Meier, “Influence of Coulomb-induced band couplings on linear excitonic absorption spectra of semiconducting carbon nanotubes,” <i>Physical Review B</i>, vol. 89, no. 15, Art. no. 155407, 2014, doi: <a href=\"https://doi.org/10.1103/physrevb.89.155407\">10.1103/physrevb.89.155407</a>.","chicago":"Liu, Hong, Stefan Schumacher, and Torsten Meier. “Influence of Coulomb-Induced Band Couplings on Linear Excitonic Absorption Spectra of Semiconducting Carbon Nanotubes.” <i>Physical Review B</i> 89, no. 15 (2014). <a href=\"https://doi.org/10.1103/physrevb.89.155407\">https://doi.org/10.1103/physrevb.89.155407</a>.","ama":"Liu H, Schumacher S, Meier T. Influence of Coulomb-induced band couplings on linear excitonic absorption spectra of semiconducting carbon nanotubes. <i>Physical Review B</i>. 2014;89(15). doi:<a href=\"https://doi.org/10.1103/physrevb.89.155407\">10.1103/physrevb.89.155407</a>"},"intvolume":"        89","year":"2014","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"293"},{"_id":"297"},{"_id":"230"},{"_id":"35"}],"project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"},{"_id":"52","name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"15864","language":[{"iso":"eng"}],"article_number":"155407","type":"journal_article","publication":"Physical Review B","status":"public","abstract":[{"lang":"eng","text":"Starting from the extended Su-Schrieffer-Heeger model, multiband semiconductor Bloch equations are formulated in momentum space and applied to the analysis of the linear optical response of semiconducting carbon nanotubes (SCNTs). This formalism includes the coupling of electron-hole pair excitations between different valence and conduction bands, originating from the electron-hole Coulomb attraction. The influence of these couplings, which are referred to as nondiagonal interband Coulomb interaction (NDI-CI), on the linear excitonic absorption spectra is investigated and discussed for light fields polarized parallel to the tube direction. The results show that the intervalley NDI-CI leads to a significant increase of the band gap and a decrease of the exciton binding energy that results in a blueshift of the lowest-frequency excitonic absorption peak. The strength of these effects depends on the symmetry of the SCNT. Furthermore, for zigzag SCNTs with higher symmetry other nonintervalley NDI-CI terms also affect the spectral positions of excitonic absorption peaks."}]},{"doi":"10.1117/12.2037174","title":"Formation and control of transverse patterns in a quantum fluid of microcavity polaritons","author":[{"last_name":"Lewandowski","full_name":"Lewandowski, P.","first_name":"P."},{"first_name":"V.","last_name":"Ardizzone","full_name":"Ardizzone, V."},{"first_name":"Y. C.","last_name":"Tse","full_name":"Tse, Y. C."},{"first_name":"N. H.","full_name":"Kwong, N. H.","last_name":"Kwong"},{"first_name":"M. H.","last_name":"Luk","full_name":"Luk, M. H."},{"first_name":"A.","full_name":"Lücke, A.","last_name":"Lücke"},{"full_name":"Abbarchi, M.","last_name":"Abbarchi","first_name":"M."},{"last_name":"Bloch","full_name":"Bloch, J.","first_name":"J."},{"first_name":"E.","full_name":"Baudin, E.","last_name":"Baudin"},{"first_name":"E.","full_name":"Galopin, E.","last_name":"Galopin"},{"full_name":"Lemaître, A.","last_name":"Lemaître","first_name":"A."},{"first_name":"P. T.","full_name":"Leung, P. T.","last_name":"Leung"},{"first_name":"Ph.","last_name":"Roussignol","full_name":"Roussignol, Ph."},{"full_name":"Binder, R.","last_name":"Binder","first_name":"R."},{"last_name":"Tignon","full_name":"Tignon, J.","first_name":"J."},{"first_name":"Stefan","last_name":"Schumacher","orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","id":"27271"}],"date_created":"2020-02-10T11:56:39Z","date_updated":"2025-12-05T14:50:58Z","citation":{"apa":"Lewandowski, P., Ardizzone, V., Tse, Y. C., Kwong, N. H., Luk, M. H., Lücke, A., Abbarchi, M., Bloch, J., Baudin, E., Galopin, E., Lemaître, A., Leung, P. T., Roussignol, Ph., Binder, R., Tignon, J., &#38; Schumacher, S. (2014). Formation and control of transverse patterns in a quantum fluid of microcavity polaritons. In M. Betz, A. Y. Elezzabi, J.-J. Song, &#38; K.-T. Tsen (Eds.), <i>Ultrafast Phenomena and Nanophotonics XVIII</i>. <a href=\"https://doi.org/10.1117/12.2037174\">https://doi.org/10.1117/12.2037174</a>","short":"P. Lewandowski, V. Ardizzone, Y.C. Tse, N.H. Kwong, M.H. Luk, A. Lücke, M. Abbarchi, J. Bloch, E. Baudin, E. Galopin, A. Lemaître, P.T. Leung, Ph. Roussignol, R. Binder, J. Tignon, S. Schumacher, in: M. Betz, A.Y. Elezzabi, J.-J. Song, K.-T. Tsen (Eds.), Ultrafast Phenomena and Nanophotonics XVIII, 2014.","bibtex":"@inproceedings{Lewandowski_Ardizzone_Tse_Kwong_Luk_Lücke_Abbarchi_Bloch_Baudin_Galopin_et al._2014, title={Formation and control of transverse patterns in a quantum fluid of microcavity polaritons}, DOI={<a href=\"https://doi.org/10.1117/12.2037174\">10.1117/12.2037174</a>}, booktitle={Ultrafast Phenomena and Nanophotonics XVIII}, author={Lewandowski, P. and Ardizzone, V. and Tse, Y. C. and Kwong, N. H. and Luk, M. H. and Lücke, A. and Abbarchi, M. and Bloch, J. and Baudin, E. and Galopin, E. and et al.}, editor={Betz, Markus and Elezzabi, Abdulhakem Y. and Song, Jin-Joo and Tsen, Kong-Thon}, year={2014} }","mla":"Lewandowski, P., et al. “Formation and Control of Transverse Patterns in a Quantum Fluid of Microcavity Polaritons.” <i>Ultrafast Phenomena and Nanophotonics XVIII</i>, edited by Markus Betz et al., 2014, doi:<a href=\"https://doi.org/10.1117/12.2037174\">10.1117/12.2037174</a>.","ama":"Lewandowski P, Ardizzone V, Tse YC, et al. Formation and control of transverse patterns in a quantum fluid of microcavity polaritons. In: Betz M, Elezzabi AY, Song J-J, Tsen K-T, eds. <i>Ultrafast Phenomena and Nanophotonics XVIII</i>. ; 2014. doi:<a href=\"https://doi.org/10.1117/12.2037174\">10.1117/12.2037174</a>","ieee":"P. Lewandowski <i>et al.</i>, “Formation and control of transverse patterns in a quantum fluid of microcavity polaritons,” in <i>Ultrafast Phenomena and Nanophotonics XVIII</i>, 2014, doi: <a href=\"https://doi.org/10.1117/12.2037174\">10.1117/12.2037174</a>.","chicago":"Lewandowski, P., V. Ardizzone, Y. C. Tse, N. H. Kwong, M. H. Luk, A. Lücke, M. Abbarchi, et al. “Formation and Control of Transverse Patterns in a Quantum Fluid of Microcavity Polaritons.” In <i>Ultrafast Phenomena and Nanophotonics XVIII</i>, edited by Markus Betz, Abdulhakem Y. Elezzabi, Jin-Joo Song, and Kong-Thon Tsen, 2014. <a href=\"https://doi.org/10.1117/12.2037174\">https://doi.org/10.1117/12.2037174</a>."},"year":"2014","publication_status":"published","language":[{"iso":"eng"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"35"},{"_id":"230"},{"_id":"27"}],"user_id":"16199","_id":"15865","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"status":"public","editor":[{"first_name":"Markus","last_name":"Betz","full_name":"Betz, Markus"},{"full_name":"Elezzabi, Abdulhakem Y.","last_name":"Elezzabi","first_name":"Abdulhakem Y."},{"first_name":"Jin-Joo","last_name":"Song","full_name":"Song, Jin-Joo"},{"first_name":"Kong-Thon","full_name":"Tsen, Kong-Thon","last_name":"Tsen"}],"publication":"Ultrafast Phenomena and Nanophotonics XVIII","type":"conference"},{"_id":"7485","user_id":"16199","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"},{"_id":"287"},{"_id":"170"},{"_id":"297"}],"language":[{"iso":"eng"}],"type":"journal_article","publication":"Phys. Chem. Chem. Phys.","status":"public","publisher":"Royal Society of Chemistry (RSC)","date_updated":"2025-12-05T14:49:36Z","date_created":"2019-02-04T14:09:21Z","author":[{"last_name":"Wiebeler","full_name":"Wiebeler, Christian","first_name":"Christian"},{"first_name":"Christina A.","last_name":"Bader","full_name":"Bader, Christina A."},{"first_name":"Cedrik","orcid":"https://orcid.org/0000-0002-3787-3572","last_name":"Meier","id":"20798","full_name":"Meier, Cedrik"},{"last_name":"Schumacher","orcid":"0000-0003-4042-4951","id":"27271","full_name":"Schumacher, Stefan","first_name":"Stefan"}],"volume":16,"title":"Optical spectrum, perceived color, refractive index, and non-adiabatic dynamics of the photochromic diarylethene CMTE","doi":"10.1039/c3cp55490b","publication_status":"published","publication_identifier":{"issn":["1463-9076","1463-9084"]},"issue":"28","year":"2014","citation":{"ama":"Wiebeler C, Bader CA, Meier C, Schumacher S. Optical spectrum, perceived color, refractive index, and non-adiabatic dynamics of the photochromic diarylethene CMTE. <i>Phys Chem Chem Phys</i>. 2014;16(28):14531-14538. doi:<a href=\"https://doi.org/10.1039/c3cp55490b\">10.1039/c3cp55490b</a>","chicago":"Wiebeler, Christian, Christina A. Bader, Cedrik Meier, and Stefan Schumacher. “Optical Spectrum, Perceived Color, Refractive Index, and Non-Adiabatic Dynamics of the Photochromic Diarylethene CMTE.” <i>Phys. Chem. Chem. Phys.</i> 16, no. 28 (2014): 14531–38. <a href=\"https://doi.org/10.1039/c3cp55490b\">https://doi.org/10.1039/c3cp55490b</a>.","ieee":"C. Wiebeler, C. A. Bader, C. Meier, and S. Schumacher, “Optical spectrum, perceived color, refractive index, and non-adiabatic dynamics of the photochromic diarylethene CMTE,” <i>Phys. Chem. Chem. Phys.</i>, vol. 16, no. 28, pp. 14531–14538, 2014, doi: <a href=\"https://doi.org/10.1039/c3cp55490b\">10.1039/c3cp55490b</a>.","apa":"Wiebeler, C., Bader, C. A., Meier, C., &#38; Schumacher, S. (2014). Optical spectrum, perceived color, refractive index, and non-adiabatic dynamics of the photochromic diarylethene CMTE. <i>Phys. Chem. Chem. Phys.</i>, <i>16</i>(28), 14531–14538. <a href=\"https://doi.org/10.1039/c3cp55490b\">https://doi.org/10.1039/c3cp55490b</a>","mla":"Wiebeler, Christian, et al. “Optical Spectrum, Perceived Color, Refractive Index, and Non-Adiabatic Dynamics of the Photochromic Diarylethene CMTE.” <i>Phys. Chem. Chem. Phys.</i>, vol. 16, no. 28, Royal Society of Chemistry (RSC), 2014, pp. 14531–38, doi:<a href=\"https://doi.org/10.1039/c3cp55490b\">10.1039/c3cp55490b</a>.","short":"C. Wiebeler, C.A. Bader, C. Meier, S. Schumacher, Phys. Chem. Chem. Phys. 16 (2014) 14531–14538.","bibtex":"@article{Wiebeler_Bader_Meier_Schumacher_2014, title={Optical spectrum, perceived color, refractive index, and non-adiabatic dynamics of the photochromic diarylethene CMTE}, volume={16}, DOI={<a href=\"https://doi.org/10.1039/c3cp55490b\">10.1039/c3cp55490b</a>}, number={28}, journal={Phys. Chem. Chem. Phys.}, publisher={Royal Society of Chemistry (RSC)}, author={Wiebeler, Christian and Bader, Christina A. and Meier, Cedrik and Schumacher, Stefan}, year={2014}, pages={14531–14538} }"},"page":"14531-14538","intvolume":"        16"},{"type":"journal_article","publication":"Chemistry - A European Journal","status":"public","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"15863","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"313"},{"_id":"230"},{"_id":"2"},{"_id":"35"},{"_id":"27"}],"language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["0947-6539"]},"year":"2014","citation":{"ama":"Vollbrecht J, Bock H, Wiebeler C, Schumacher S, Kitzerow H-S. Polycyclic Aromatic Hydrocarbons Obtained by Lateral Core Extension of Mesogenic Perylenes: Absorption and Optoelectronic Properties. <i>Chemistry - A European Journal</i>. Published online 2014:12026-12031. doi:<a href=\"https://doi.org/10.1002/chem.201403287\">10.1002/chem.201403287</a>","chicago":"Vollbrecht, Joachim, Harald Bock, Christian Wiebeler, Stefan Schumacher, and Heinz-Siegfried Kitzerow. “Polycyclic Aromatic Hydrocarbons Obtained by Lateral Core Extension of Mesogenic Perylenes: Absorption and Optoelectronic Properties.” <i>Chemistry - A European Journal</i>, 2014, 12026–31. <a href=\"https://doi.org/10.1002/chem.201403287\">https://doi.org/10.1002/chem.201403287</a>.","ieee":"J. Vollbrecht, H. Bock, C. Wiebeler, S. Schumacher, and H.-S. Kitzerow, “Polycyclic Aromatic Hydrocarbons Obtained by Lateral Core Extension of Mesogenic Perylenes: Absorption and Optoelectronic Properties,” <i>Chemistry - A European Journal</i>, pp. 12026–12031, 2014, doi: <a href=\"https://doi.org/10.1002/chem.201403287\">10.1002/chem.201403287</a>.","apa":"Vollbrecht, J., Bock, H., Wiebeler, C., Schumacher, S., &#38; Kitzerow, H.-S. (2014). Polycyclic Aromatic Hydrocarbons Obtained by Lateral Core Extension of Mesogenic Perylenes: Absorption and Optoelectronic Properties. <i>Chemistry - A European Journal</i>, 12026–12031. <a href=\"https://doi.org/10.1002/chem.201403287\">https://doi.org/10.1002/chem.201403287</a>","bibtex":"@article{Vollbrecht_Bock_Wiebeler_Schumacher_Kitzerow_2014, title={Polycyclic Aromatic Hydrocarbons Obtained by Lateral Core Extension of Mesogenic Perylenes: Absorption and Optoelectronic Properties}, DOI={<a href=\"https://doi.org/10.1002/chem.201403287\">10.1002/chem.201403287</a>}, journal={Chemistry - A European Journal}, author={Vollbrecht, Joachim and Bock, Harald and Wiebeler, Christian and Schumacher, Stefan and Kitzerow, Heinz-Siegfried}, year={2014}, pages={12026–12031} }","short":"J. Vollbrecht, H. Bock, C. Wiebeler, S. Schumacher, H.-S. Kitzerow, Chemistry - A European Journal (2014) 12026–12031.","mla":"Vollbrecht, Joachim, et al. “Polycyclic Aromatic Hydrocarbons Obtained by Lateral Core Extension of Mesogenic Perylenes: Absorption and Optoelectronic Properties.” <i>Chemistry - A European Journal</i>, 2014, pp. 12026–31, doi:<a href=\"https://doi.org/10.1002/chem.201403287\">10.1002/chem.201403287</a>."},"page":"12026-12031","date_updated":"2025-12-05T14:51:34Z","author":[{"last_name":"Vollbrecht","full_name":"Vollbrecht, Joachim","first_name":"Joachim"},{"first_name":"Harald","full_name":"Bock, Harald","last_name":"Bock"},{"first_name":"Christian","full_name":"Wiebeler, Christian","last_name":"Wiebeler"},{"first_name":"Stefan","orcid":"0000-0003-4042-4951","last_name":"Schumacher","id":"27271","full_name":"Schumacher, Stefan"},{"last_name":"Kitzerow","id":"254","full_name":"Kitzerow, Heinz-Siegfried","first_name":"Heinz-Siegfried"}],"date_created":"2020-02-10T11:54:49Z","title":"Polycyclic Aromatic Hydrocarbons Obtained by Lateral Core Extension of Mesogenic Perylenes: Absorption and Optoelectronic Properties","doi":"10.1002/chem.201403287"},{"language":[{"iso":"eng"}],"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"15861","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"35"},{"_id":"27"},{"_id":"230"}],"status":"public","type":"journal_article","publication":"The Journal of Physical Chemistry A","title":"Optical Spectroscopy of Graphene Quantum Dots: The Case of C132","doi":"10.1021/jp502753a","date_updated":"2025-12-05T14:50:18Z","author":[{"first_name":"Hans","full_name":"Riesen, Hans","last_name":"Riesen"},{"full_name":"Wiebeler, Christian","last_name":"Wiebeler","first_name":"Christian"},{"first_name":"Stefan","orcid":"0000-0003-4042-4951","last_name":"Schumacher","id":"27271","full_name":"Schumacher, Stefan"}],"date_created":"2020-02-10T11:53:23Z","year":"2014","citation":{"ama":"Riesen H, Wiebeler C, Schumacher S. Optical Spectroscopy of Graphene Quantum Dots: The Case of C132. <i>The Journal of Physical Chemistry A</i>. Published online 2014:5189-5195. doi:<a href=\"https://doi.org/10.1021/jp502753a\">10.1021/jp502753a</a>","chicago":"Riesen, Hans, Christian Wiebeler, and Stefan Schumacher. “Optical Spectroscopy of Graphene Quantum Dots: The Case of C132.” <i>The Journal of Physical Chemistry A</i>, 2014, 5189–95. <a href=\"https://doi.org/10.1021/jp502753a\">https://doi.org/10.1021/jp502753a</a>.","ieee":"H. Riesen, C. Wiebeler, and S. Schumacher, “Optical Spectroscopy of Graphene Quantum Dots: The Case of C132,” <i>The Journal of Physical Chemistry A</i>, pp. 5189–5195, 2014, doi: <a href=\"https://doi.org/10.1021/jp502753a\">10.1021/jp502753a</a>.","apa":"Riesen, H., Wiebeler, C., &#38; Schumacher, S. (2014). Optical Spectroscopy of Graphene Quantum Dots: The Case of C132. <i>The Journal of Physical Chemistry A</i>, 5189–5195. <a href=\"https://doi.org/10.1021/jp502753a\">https://doi.org/10.1021/jp502753a</a>","short":"H. Riesen, C. Wiebeler, S. Schumacher, The Journal of Physical Chemistry A (2014) 5189–5195.","bibtex":"@article{Riesen_Wiebeler_Schumacher_2014, title={Optical Spectroscopy of Graphene Quantum Dots: The Case of C132}, DOI={<a href=\"https://doi.org/10.1021/jp502753a\">10.1021/jp502753a</a>}, journal={The Journal of Physical Chemistry A}, author={Riesen, Hans and Wiebeler, Christian and Schumacher, Stefan}, year={2014}, pages={5189–5195} }","mla":"Riesen, Hans, et al. “Optical Spectroscopy of Graphene Quantum Dots: The Case of C132.” <i>The Journal of Physical Chemistry A</i>, 2014, pp. 5189–95, doi:<a href=\"https://doi.org/10.1021/jp502753a\">10.1021/jp502753a</a>."},"page":"5189-5195","publication_status":"published","publication_identifier":{"issn":["1089-5639","1520-5215"]}},{"year":"2014","citation":{"short":"C. Wiebeler, S. Schumacher, The Journal of Physical Chemistry A (2014) 7816–7823.","mla":"Wiebeler, Christian, and Stefan Schumacher. “Quantum Yields and Reaction Times of Photochromic Diarylethenes: Nonadiabatic Ab Initio Molecular Dynamics for Normal- and Inverse-Type.” <i>The Journal of Physical Chemistry A</i>, 2014, pp. 7816–23, doi:<a href=\"https://doi.org/10.1021/jp506316w\">10.1021/jp506316w</a>.","bibtex":"@article{Wiebeler_Schumacher_2014, title={Quantum Yields and Reaction Times of Photochromic Diarylethenes: Nonadiabatic Ab Initio Molecular Dynamics for Normal- and Inverse-Type}, DOI={<a href=\"https://doi.org/10.1021/jp506316w\">10.1021/jp506316w</a>}, journal={The Journal of Physical Chemistry A}, author={Wiebeler, Christian and Schumacher, Stefan}, year={2014}, pages={7816–7823} }","apa":"Wiebeler, C., &#38; Schumacher, S. (2014). Quantum Yields and Reaction Times of Photochromic Diarylethenes: Nonadiabatic Ab Initio Molecular Dynamics for Normal- and Inverse-Type. <i>The Journal of Physical Chemistry A</i>, 7816–7823. <a href=\"https://doi.org/10.1021/jp506316w\">https://doi.org/10.1021/jp506316w</a>","ama":"Wiebeler C, Schumacher S. Quantum Yields and Reaction Times of Photochromic Diarylethenes: Nonadiabatic Ab Initio Molecular Dynamics for Normal- and Inverse-Type. <i>The Journal of Physical Chemistry A</i>. Published online 2014:7816-7823. doi:<a href=\"https://doi.org/10.1021/jp506316w\">10.1021/jp506316w</a>","chicago":"Wiebeler, Christian, and Stefan Schumacher. “Quantum Yields and Reaction Times of Photochromic Diarylethenes: Nonadiabatic Ab Initio Molecular Dynamics for Normal- and Inverse-Type.” <i>The Journal of Physical Chemistry A</i>, 2014, 7816–23. <a href=\"https://doi.org/10.1021/jp506316w\">https://doi.org/10.1021/jp506316w</a>.","ieee":"C. Wiebeler and S. Schumacher, “Quantum Yields and Reaction Times of Photochromic Diarylethenes: Nonadiabatic Ab Initio Molecular Dynamics for Normal- and Inverse-Type,” <i>The Journal of Physical Chemistry A</i>, pp. 7816–7823, 2014, doi: <a href=\"https://doi.org/10.1021/jp506316w\">10.1021/jp506316w</a>."},"page":"7816-7823","publication_status":"published","publication_identifier":{"issn":["1089-5639","1520-5215"]},"title":"Quantum Yields and Reaction Times of Photochromic Diarylethenes: Nonadiabatic Ab Initio Molecular Dynamics for Normal- and Inverse-Type","doi":"10.1021/jp506316w","date_updated":"2025-12-16T08:03:40Z","date_created":"2020-02-10T11:54:03Z","author":[{"first_name":"Christian","last_name":"Wiebeler","full_name":"Wiebeler, Christian"},{"first_name":"Stefan","full_name":"Schumacher, Stefan","id":"27271","last_name":"Schumacher","orcid":"0000-0003-4042-4951"}],"status":"public","type":"journal_article","publication":"The Journal of Physical Chemistry A","language":[{"iso":"eng"}],"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"15862","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"35"},{"_id":"230"},{"_id":"27"}]},{"place":"Berlin, Heidelberg","citation":{"ama":"Friedrich C, Şaşıoğlu E, Müller M, Schindlmayr A, Blügel S. Spin excitations in solids from many-body perturbation theory. In: Di Valentin C, Botti S, Cococcioni M, eds. <i>First Principles Approaches to Spectroscopic Properties of Complex Materials</i>. Vol 347.  Topics in Current Chemistry. Springer; 2014:259-301. doi:<a href=\"https://doi.org/10.1007/128_2013_518\">10.1007/128_2013_518</a>","ieee":"C. Friedrich, E. Şaşıoğlu, M. Müller, A. Schindlmayr, and S. Blügel, “Spin excitations in solids from many-body perturbation theory,” in <i>First Principles Approaches to Spectroscopic Properties of Complex Materials</i>, vol. 347, C. Di Valentin, S. Botti, and M. Cococcioni, Eds. Berlin, Heidelberg: Springer, 2014, pp. 259–301.","chicago":"Friedrich, Christoph, Ersoy Şaşıoğlu, Mathias Müller, Arno Schindlmayr, and Stefan Blügel. “Spin Excitations in Solids from Many-Body Perturbation Theory.” In <i>First Principles Approaches to Spectroscopic Properties of Complex Materials</i>, edited by Cristiana Di Valentin, Silvana Botti, and Matteo Cococcioni, 347:259–301.  Topics in Current Chemistry. Berlin, Heidelberg: Springer, 2014. <a href=\"https://doi.org/10.1007/128_2013_518\">https://doi.org/10.1007/128_2013_518</a>.","apa":"Friedrich, C., Şaşıoğlu, E., Müller, M., Schindlmayr, A., &#38; Blügel, S. (2014). Spin excitations in solids from many-body perturbation theory. In C. Di Valentin, S. Botti, &#38; M. Cococcioni (Eds.), <i>First Principles Approaches to Spectroscopic Properties of Complex Materials</i> (Vol. 347, pp. 259–301). Springer. <a href=\"https://doi.org/10.1007/128_2013_518\">https://doi.org/10.1007/128_2013_518</a>","mla":"Friedrich, Christoph, et al. “Spin Excitations in Solids from Many-Body Perturbation Theory.” <i>First Principles Approaches to Spectroscopic Properties of Complex Materials</i>, edited by Cristiana Di Valentin et al., vol. 347, Springer, 2014, pp. 259–301, doi:<a href=\"https://doi.org/10.1007/128_2013_518\">10.1007/128_2013_518</a>.","short":"C. Friedrich, E. Şaşıoğlu, M. Müller, A. Schindlmayr, S. Blügel, in: C. Di Valentin, S. Botti, M. Cococcioni (Eds.), First Principles Approaches to Spectroscopic Properties of Complex Materials, Springer, Berlin, Heidelberg, 2014, pp. 259–301.","bibtex":"@inbook{Friedrich_Şaşıoğlu_Müller_Schindlmayr_Blügel_2014, place={Berlin, Heidelberg}, series={ Topics in Current Chemistry}, title={Spin excitations in solids from many-body perturbation theory}, volume={347}, DOI={<a href=\"https://doi.org/10.1007/128_2013_518\">10.1007/128_2013_518</a>}, booktitle={First Principles Approaches to Spectroscopic Properties of Complex Materials}, publisher={Springer}, author={Friedrich, Christoph and Şaşıoğlu, Ersoy and Müller, Mathias and Schindlmayr, Arno and Blügel, Stefan}, editor={Di Valentin, Cristiana and Botti, Silvana and Cococcioni, Matteo}, year={2014}, pages={259–301}, collection={ Topics in Current Chemistry} }"},"intvolume":"       347","page":"259-301","publication_status":"published","has_accepted_license":"1","pmid":"1","publication_identifier":{"eisbn":["978-3-642-55068-3"],"eissn":["1436-5049"],"isbn":["978-3-642-55067-6"],"issn":["0340-1022"]},"doi":"10.1007/128_2013_518","date_updated":"2025-12-16T08:06:12Z","author":[{"first_name":"Christoph","last_name":"Friedrich","full_name":"Friedrich, Christoph"},{"first_name":"Ersoy","full_name":"Şaşıoğlu, Ersoy","last_name":"Şaşıoğlu"},{"last_name":"Müller","full_name":"Müller, Mathias","first_name":"Mathias"},{"first_name":"Arno","full_name":"Schindlmayr, Arno","id":"458","last_name":"Schindlmayr","orcid":"0000-0002-4855-071X"},{"full_name":"Blügel, Stefan","last_name":"Blügel","first_name":"Stefan"}],"volume":347,"editor":[{"full_name":"Di Valentin, Cristiana","last_name":"Di Valentin","first_name":"Cristiana"},{"first_name":"Silvana","last_name":"Botti","full_name":"Botti, Silvana"},{"first_name":"Matteo","last_name":"Cococcioni","full_name":"Cococcioni, Matteo"}],"status":"public","type":"book_chapter","isi":"1","file_date_updated":"2020-08-30T14:48:45Z","_id":"18471","user_id":"16199","series_title":" Topics in Current Chemistry","department":[{"_id":"296"},{"_id":"35"},{"_id":"15"},{"_id":"230"}],"year":"2014","quality_controlled":"1","title":"Spin excitations in solids from many-body perturbation theory","publisher":"Springer","date_created":"2020-08-27T21:00:45Z","abstract":[{"text":"Collective spin excitations form a fundamental class of excitations in magnetic materials. As their energy reaches down to only a few meV, they are present at all temperatures and substantially influence the properties of magnetic systems. To study the spin excitations in solids from first principles, we have developed a computational scheme based on many-body perturbation theory within the full-potential linearized augmented plane-wave (FLAPW) method. The main quantity of interest is the dynamical transverse spin susceptibility or magnetic response function, from which magnetic excitations, including single-particle spin-flip Stoner excitations and collective spin-wave modes as well as their lifetimes, can be obtained. In order to describe spin waves we include appropriate vertex corrections in the form of a multiple-scattering T matrix, which describes the coupling of electrons and holes with different spins. The electron–hole interaction incorporates the screening of the many-body system within the random-phase approximation. To reduce the numerical cost in evaluating the four-point T matrix, we exploit a transformation to maximally localized Wannier functions that takes advantage of the short spatial range of electronic correlation in the partially filled d or f orbitals of magnetic materials. The theory and the implementation are discussed in detail. In particular, we show how the magnetic response function can be evaluated for arbitrary k points. This enables the calculation of smooth dispersion curves, allowing one to study fine details in the k dependence of the spin-wave spectra. We also demonstrate how spatial and time-reversal symmetry can be exploited to accelerate substantially the computation of the four-point quantities. As an illustration, we present spin-wave spectra and dispersions for the elementary ferromagnet bcc Fe, B2-type tetragonal FeCo, and CrO2 calculated with our scheme. The results are in good agreement with available experimental data.","lang":"eng"}],"file":[{"file_id":"18584","file_name":"Friedrich2014_Chapter_SpinExcitationsInSolidsFromMan.pdf","access_level":"closed","description":"© 2014 Springer-Verlag, Berlin, Heidelberg","file_size":1061365,"title":"Spin excitations in solids from many-body perturbation theory","date_created":"2020-08-28T15:19:57Z","creator":"schindlm","date_updated":"2020-08-30T14:48:45Z","relation":"main_file","content_type":"application/pdf"}],"publication":"First Principles Approaches to Spectroscopic Properties of Complex Materials","ddc":["530"],"language":[{"iso":"eng"}],"external_id":{"isi":["000356811000008"],"pmid":["24577607"]}},{"abstract":[{"lang":"eng","text":"Many-body perturbation theory is a well-established ab initio electronic-structure method based on Green functions. Although computationally more demanding than density functional theory, it has the distinct advantage that the exact expressions for all relevant observables, including the ground-state total energy, in terms of the Green function are known explicitly. The most important application, however, lies in the calculation of excited states, whose energies correspond directly to the poles of the Green function in the complex frequency plane. The accuracy of results obtained within this framework is only limited by the choice of the exchange-correlation self-energy, which must still be approximated in actual implementations. In this respect, the GW approximation has proved highly successful for systems governed by the Coulomb interaction. It yields band structures of solids, including the band gaps of semiconductors, as well as atomic and molecular ionization energies in very good quantitative agreement with experimental photoemission data."}],"file":[{"content_type":"application/pdf","creator":"schindlm","file_size":309579,"file_name":"Schindlmayr2014_Chapter_TheGWApproximationForTheElectr.pdf","relation":"main_file","date_updated":"2020-08-30T14:50:18Z","date_created":"2020-08-28T15:25:10Z","title":"The GW approximation for the electronic self-energy","description":"© 2014 Springer International Publishing, Switzerland","file_id":"18585","access_level":"closed"}],"publication":"Many-Electron Approaches in Physics, Chemistry and Mathematics","ddc":["530"],"language":[{"iso":"eng"}],"year":"2014","quality_controlled":"1","title":"The GW approximation for the electronic self-energy","publisher":"Springer","date_created":"2020-08-27T21:11:43Z","editor":[{"first_name":"Volker","last_name":"Bach","full_name":"Bach, Volker"},{"last_name":"Delle Site","full_name":"Delle Site, Luigi","first_name":"Luigi"}],"status":"public","type":"book_chapter","file_date_updated":"2020-08-30T14:50:18Z","_id":"18472","series_title":" Mathematical Physics Studies","user_id":"16199","department":[{"_id":"296"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"}],"place":"Cham","citation":{"mla":"Schindlmayr, Arno. “The GW Approximation for the Electronic Self-Energy.” <i>Many-Electron Approaches in Physics, Chemistry and Mathematics</i>, edited by Volker Bach and Luigi Delle Site, vol. 29, Springer, 2014, pp. 343–57, doi:<a href=\"https://doi.org/10.1007/978-3-319-06379-9_19\">10.1007/978-3-319-06379-9_19</a>.","bibtex":"@inbook{Schindlmayr_2014, place={Cham}, series={ Mathematical Physics Studies}, title={The GW approximation for the electronic self-energy}, volume={29}, DOI={<a href=\"https://doi.org/10.1007/978-3-319-06379-9_19\">10.1007/978-3-319-06379-9_19</a>}, booktitle={Many-Electron Approaches in Physics, Chemistry and Mathematics}, publisher={Springer}, author={Schindlmayr, Arno}, editor={Bach, Volker and Delle Site, Luigi}, year={2014}, pages={343–357}, collection={ Mathematical Physics Studies} }","short":"A. Schindlmayr, in: V. Bach, L. Delle Site (Eds.), Many-Electron Approaches in Physics, Chemistry and Mathematics, Springer, Cham, 2014, pp. 343–357.","apa":"Schindlmayr, A. (2014). The GW approximation for the electronic self-energy. In V. Bach &#38; L. Delle Site (Eds.), <i>Many-Electron Approaches in Physics, Chemistry and Mathematics</i> (Vol. 29, pp. 343–357). Springer. <a href=\"https://doi.org/10.1007/978-3-319-06379-9_19\">https://doi.org/10.1007/978-3-319-06379-9_19</a>","ama":"Schindlmayr A. The GW approximation for the electronic self-energy. In: Bach V, Delle Site L, eds. <i>Many-Electron Approaches in Physics, Chemistry and Mathematics</i>. Vol 29.  Mathematical Physics Studies. Springer; 2014:343-357. doi:<a href=\"https://doi.org/10.1007/978-3-319-06379-9_19\">10.1007/978-3-319-06379-9_19</a>","ieee":"A. Schindlmayr, “The GW approximation for the electronic self-energy,” in <i>Many-Electron Approaches in Physics, Chemistry and Mathematics</i>, vol. 29, V. Bach and L. Delle Site, Eds. Cham: Springer, 2014, pp. 343–357.","chicago":"Schindlmayr, Arno. “The GW Approximation for the Electronic Self-Energy.” In <i>Many-Electron Approaches in Physics, Chemistry and Mathematics</i>, edited by Volker Bach and Luigi Delle Site, 29:343–57.  Mathematical Physics Studies. Cham: Springer, 2014. <a href=\"https://doi.org/10.1007/978-3-319-06379-9_19\">https://doi.org/10.1007/978-3-319-06379-9_19</a>."},"intvolume":"        29","page":"343-357","publication_status":"published","publication_identifier":{"issn":["0921-3767"],"eissn":["2352-3905"],"isbn":["978-3-319-06378-2"],"eisbn":["978-3-319-06379-9"]},"has_accepted_license":"1","doi":"10.1007/978-3-319-06379-9_19","date_updated":"2025-12-16T08:05:25Z","author":[{"last_name":"Schindlmayr","orcid":"0000-0002-4855-071X","full_name":"Schindlmayr, Arno","id":"458","first_name":"Arno"}],"volume":29},{"file_date_updated":"2020-08-30T14:52:27Z","article_number":"05FY02","article_type":"original","isi":"1","user_id":"16199","department":[{"_id":"296"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"}],"_id":"18473","status":"public","type":"journal_article","doi":"10.7567/jjap.53.05fy02","author":[{"full_name":"Yanagisawa, Susumu","last_name":"Yanagisawa","first_name":"Susumu"},{"first_name":"Yoshitada","last_name":"Morikawa","full_name":"Morikawa, Yoshitada"},{"first_name":"Arno","last_name":"Schindlmayr","orcid":"0000-0002-4855-071X","full_name":"Schindlmayr, Arno","id":"458"}],"volume":53,"date_updated":"2025-12-16T08:04:51Z","citation":{"short":"S. Yanagisawa, Y. Morikawa, A. Schindlmayr, Japanese Journal of Applied Physics 53 (2014).","bibtex":"@article{Yanagisawa_Morikawa_Schindlmayr_2014, title={Theoretical investigation of the band structure of picene single crystals within the GW approximation}, volume={53}, DOI={<a href=\"https://doi.org/10.7567/jjap.53.05fy02\">10.7567/jjap.53.05fy02</a>}, number={5S105FY02}, journal={Japanese Journal of Applied Physics}, publisher={IOP Publishing and The Japan Society of Applied Physics}, author={Yanagisawa, Susumu and Morikawa, Yoshitada and Schindlmayr, Arno}, year={2014} }","mla":"Yanagisawa, Susumu, et al. “Theoretical Investigation of the Band Structure of Picene Single Crystals within the GW Approximation.” <i>Japanese Journal of Applied Physics</i>, vol. 53, no. 5S1, 05FY02, IOP Publishing and The Japan Society of Applied Physics, 2014, doi:<a href=\"https://doi.org/10.7567/jjap.53.05fy02\">10.7567/jjap.53.05fy02</a>.","apa":"Yanagisawa, S., Morikawa, Y., &#38; Schindlmayr, A. (2014). Theoretical investigation of the band structure of picene single crystals within the GW approximation. <i>Japanese Journal of Applied Physics</i>, <i>53</i>(5S1), Article 05FY02. <a href=\"https://doi.org/10.7567/jjap.53.05fy02\">https://doi.org/10.7567/jjap.53.05fy02</a>","ieee":"S. Yanagisawa, Y. Morikawa, and A. Schindlmayr, “Theoretical investigation of the band structure of picene single crystals within the GW approximation,” <i>Japanese Journal of Applied Physics</i>, vol. 53, no. 5S1, Art. no. 05FY02, 2014, doi: <a href=\"https://doi.org/10.7567/jjap.53.05fy02\">10.7567/jjap.53.05fy02</a>.","chicago":"Yanagisawa, Susumu, Yoshitada Morikawa, and Arno Schindlmayr. “Theoretical Investigation of the Band Structure of Picene Single Crystals within the GW Approximation.” <i>Japanese Journal of Applied Physics</i> 53, no. 5S1 (2014). <a href=\"https://doi.org/10.7567/jjap.53.05fy02\">https://doi.org/10.7567/jjap.53.05fy02</a>.","ama":"Yanagisawa S, Morikawa Y, Schindlmayr A. Theoretical investigation of the band structure of picene single crystals within the GW approximation. <i>Japanese Journal of Applied Physics</i>. 2014;53(5S1). doi:<a href=\"https://doi.org/10.7567/jjap.53.05fy02\">10.7567/jjap.53.05fy02</a>"},"intvolume":"        53","publication_status":"published","has_accepted_license":"1","publication_identifier":{"eissn":["1347-4065"],"issn":["0021-4922"]},"language":[{"iso":"eng"}],"ddc":["530"],"external_id":{"isi":["000338316200158"]},"file":[{"date_updated":"2020-08-30T14:52:27Z","creator":"schindlm","date_created":"2020-08-28T14:28:20Z","title":"Theoretical investigation of the band structure of picene single crystals within the GW approximation","description":"© 2014 The Japan Society of Applied Physics","file_size":588607,"access_level":"closed","file_id":"18579","file_name":"Yanagisawa_2014_Jpn._J._Appl._Phys._53_05FY02.pdf","content_type":"application/pdf","relation":"main_file"}],"abstract":[{"lang":"eng","text":"We investigate the band dispersion and related electronic properties of picene single crystals within the GW approximation for the electronic self-energy. The width of the upper highest occupied molecular orbital (HOMOu) band along the Γ–Y direction, corresponding to the b crystal axis in real space along which the molecules are stacked, is determined to be 0.60 eV and thus 0.11 eV larger than the value obtained from density-functional theory. As in our recent study of rubrene using the same methodology [S. Yanagisawa, Y. Morikawa, and A. Schindlmayr, Phys. Rev. B 88, 115438 (2013)], this increase in the bandwidth is due to the strong variation of the GW self-energy correction across the Brillouin zone, which in turn reflects the increasing hybridization of the HOMOu states of neighboring picene molecules from Γ to Y. In contrast, the width of the lower HOMO (HOMOl) band along Γ–Y remains almost unchanged, consistent with the fact that the HOMOl(Γ) and HOMOl(Y) states exhibit the same degree of hybridization, so that the nodal structure of the wave functions and the matrix elements of the self-energy correction are very similar."}],"publication":"Japanese Journal of Applied Physics","title":"Theoretical investigation of the band structure of picene single crystals within the GW approximation","date_created":"2020-08-27T21:21:24Z","publisher":"IOP Publishing and The Japan Society of Applied Physics","year":"2014","issue":"5S1","quality_controlled":"1"},{"editor":[{"first_name":"Stefan","full_name":"Blügel, Stefan","last_name":"Blügel"},{"full_name":"Helbig, Nicole","last_name":"Helbig","first_name":"Nicole"},{"last_name":"Meden","full_name":"Meden, Volker","first_name":"Volker"},{"first_name":"Daniel","full_name":"Wortmann, Daniel","last_name":"Wortmann"}],"status":"public","type":"book_chapter","file_date_updated":"2022-01-06T06:53:34Z","_id":"18474","series_title":"Key Technologies","user_id":"16199","department":[{"_id":"296"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"}],"place":"Jülich","citation":{"chicago":"Friedrich, Christoph, and Arno Schindlmayr. “Many-Body Perturbation Theory: The GW Approximation.” In <i>Computing Solids: Models, Ab Initio Methods and Supercomputing</i>, edited by Stefan Blügel, Nicole Helbig, Volker Meden, and Daniel Wortmann, 74:A4.1-A4.21. Key Technologies. Jülich: Forschungszentrum Jülich, 2014.","ieee":"C. Friedrich and A. Schindlmayr, “Many-body perturbation theory: The GW approximation,” in <i>Computing Solids: Models, ab initio Methods and Supercomputing</i>, vol. 74, S. Blügel, N. Helbig, V. Meden, and D. Wortmann, Eds. Jülich: Forschungszentrum Jülich, 2014, p. A4.1-A4.21.","ama":"Friedrich C, Schindlmayr A. Many-body perturbation theory: The GW approximation. In: Blügel S, Helbig N, Meden V, Wortmann D, eds. <i>Computing Solids: Models, Ab Initio Methods and Supercomputing</i>. Vol 74. Key Technologies. Forschungszentrum Jülich; 2014:A4.1-A4.21.","mla":"Friedrich, Christoph, and Arno Schindlmayr. “Many-Body Perturbation Theory: The GW Approximation.” <i>Computing Solids: Models, Ab Initio Methods and Supercomputing</i>, edited by Stefan Blügel et al., vol. 74, Forschungszentrum Jülich, 2014, p. A4.1-A4.21.","short":"C. Friedrich, A. Schindlmayr, in: S. Blügel, N. Helbig, V. Meden, D. Wortmann (Eds.), Computing Solids: Models, Ab Initio Methods and Supercomputing, Forschungszentrum Jülich, Jülich, 2014, p. A4.1-A4.21.","bibtex":"@inbook{Friedrich_Schindlmayr_2014, place={Jülich}, series={Key Technologies}, title={Many-body perturbation theory: The GW approximation}, volume={74}, booktitle={Computing Solids: Models, ab initio Methods and Supercomputing}, publisher={Forschungszentrum Jülich}, author={Friedrich, Christoph and Schindlmayr, Arno}, editor={Blügel, Stefan and Helbig, Nicole and Meden, Volker and Wortmann, Daniel}, year={2014}, pages={A4.1-A4.21}, collection={Key Technologies} }","apa":"Friedrich, C., &#38; Schindlmayr, A. (2014). Many-body perturbation theory: The GW approximation. In S. Blügel, N. Helbig, V. Meden, &#38; D. Wortmann (Eds.), <i>Computing Solids: Models, ab initio Methods and Supercomputing</i> (Vol. 74, p. A4.1-A4.21). Forschungszentrum Jülich."},"intvolume":"        74","page":"A4.1-A4.21","publication_status":"published","publication_identifier":{"isbn":["978-3-89336-912-6"],"issn":["1866-1807"]},"has_accepted_license":"1","main_file_link":[{"open_access":"1","url":"http://hdl.handle.net/2128/8540"}],"conference":{"name":"45th Spring School of the Institute of Solid State Research","start_date":"2014-03-10","end_date":"2014-03-21","location":"Jülich"},"oa":"1","date_updated":"2025-12-16T08:07:31Z","author":[{"full_name":"Friedrich, Christoph","last_name":"Friedrich","first_name":"Christoph"},{"first_name":"Arno","orcid":"0000-0002-4855-071X","last_name":"Schindlmayr","id":"458","full_name":"Schindlmayr, Arno"}],"volume":74,"file":[{"creator":"schindlm","file_size":718521,"file_name":"A4-Friedrich.pdf","content_type":"application/pdf","date_updated":"2022-01-06T06:53:34Z","date_created":"2020-10-05T10:57:49Z","description":"© 2014 Forschungszentrum Jülich","title":"Many-body perturbation theory: The GW approximation","access_level":"request","file_id":"19876","relation":"main_file"}],"publication":"Computing Solids: Models, ab initio Methods and Supercomputing","ddc":["530"],"language":[{"iso":"eng"}],"year":"2014","title":"Many-body perturbation theory: The GW approximation","publisher":"Forschungszentrum Jülich","date_created":"2020-08-27T21:40:39Z"},{"publication_status":"published","publication_identifier":{"issn":["1742-6596"]},"year":"2014","citation":{"ieee":"P. Sharapova and O. V. Tikhonova, “Interaction of a classical laser field with a model Rydberg atom in a mixed state prepared by entanglement with few-photon quantum light,” <i>Journal of Physics: Conference Series</i>, vol. 497, Art. no. 012017, 2014, doi: <a href=\"https://doi.org/10.1088/1742-6596/497/1/012017\">10.1088/1742-6596/497/1/012017</a>.","chicago":"Sharapova, Polina, and O V Tikhonova. “Interaction of a Classical Laser Field with a Model Rydberg Atom in a Mixed State Prepared by Entanglement with Few-Photon Quantum Light.” <i>Journal of Physics: Conference Series</i> 497 (2014). <a href=\"https://doi.org/10.1088/1742-6596/497/1/012017\">https://doi.org/10.1088/1742-6596/497/1/012017</a>.","ama":"Sharapova P, Tikhonova OV. Interaction of a classical laser field with a model Rydberg atom in a mixed state prepared by entanglement with few-photon quantum light. <i>Journal of Physics: Conference Series</i>. 2014;497. doi:<a href=\"https://doi.org/10.1088/1742-6596/497/1/012017\">10.1088/1742-6596/497/1/012017</a>","short":"P. Sharapova, O.V. Tikhonova, Journal of Physics: Conference Series 497 (2014).","bibtex":"@article{Sharapova_Tikhonova_2014, title={Interaction of a classical laser field with a model Rydberg atom in a mixed state prepared by entanglement with few-photon quantum light}, volume={497}, DOI={<a href=\"https://doi.org/10.1088/1742-6596/497/1/012017\">10.1088/1742-6596/497/1/012017</a>}, number={012017}, journal={Journal of Physics: Conference Series}, publisher={IOP Publishing}, author={Sharapova, Polina and Tikhonova, O V}, year={2014} }","mla":"Sharapova, Polina, and O. V. Tikhonova. “Interaction of a Classical Laser Field with a Model Rydberg Atom in a Mixed State Prepared by Entanglement with Few-Photon Quantum Light.” <i>Journal of Physics: Conference Series</i>, vol. 497, 012017, IOP Publishing, 2014, doi:<a href=\"https://doi.org/10.1088/1742-6596/497/1/012017\">10.1088/1742-6596/497/1/012017</a>.","apa":"Sharapova, P., &#38; Tikhonova, O. V. (2014). Interaction of a classical laser field with a model Rydberg atom in a mixed state prepared by entanglement with few-photon quantum light. <i>Journal of Physics: Conference Series</i>, <i>497</i>, Article 012017. <a href=\"https://doi.org/10.1088/1742-6596/497/1/012017\">https://doi.org/10.1088/1742-6596/497/1/012017</a>"},"intvolume":"       497","date_updated":"2025-12-16T11:16:37Z","publisher":"IOP Publishing","date_created":"2023-01-26T14:31:48Z","author":[{"last_name":"Sharapova","id":"60286","full_name":"Sharapova, Polina","first_name":"Polina"},{"full_name":"Tikhonova, O V","last_name":"Tikhonova","first_name":"O V"}],"volume":497,"title":"Interaction of a classical laser field with a model Rydberg atom in a mixed state prepared by entanglement with few-photon quantum light","doi":"10.1088/1742-6596/497/1/012017","type":"journal_article","publication":"Journal of Physics: Conference Series","status":"public","_id":"40402","user_id":"16199","department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"35"}],"article_number":"012017","keyword":["General Physics and Astronomy"],"language":[{"iso":"eng"}]},{"department":[{"_id":"15"},{"_id":"569"},{"_id":"170"},{"_id":"35"},{"_id":"230"}],"user_id":"16199","_id":"40400","language":[{"iso":"eng"}],"keyword":["Atomic and Molecular Physics","and Optics"],"article_number":"2403","publication":"Optics Letters","type":"journal_article","status":"public","volume":39,"author":[{"first_name":"A. M.","last_name":"Pérez","full_name":"Pérez, A. M."},{"first_name":"T. Sh.","last_name":"Iskhakov","full_name":"Iskhakov, T. Sh."},{"id":"60286","full_name":"Sharapova, Polina","last_name":"Sharapova","first_name":"Polina"},{"first_name":"S.","full_name":"Lemieux, S.","last_name":"Lemieux"},{"first_name":"O. V.","full_name":"Tikhonova, O. V.","last_name":"Tikhonova"},{"first_name":"M. V.","last_name":"Chekhova","full_name":"Chekhova, M. V."},{"full_name":"Leuchs, G.","last_name":"Leuchs","first_name":"G."}],"date_created":"2023-01-26T14:31:00Z","publisher":"The Optical Society","date_updated":"2025-12-16T11:17:02Z","doi":"10.1364/ol.39.002403","title":"Bright squeezed-vacuum source with 11 spatial mode","issue":"8","publication_identifier":{"issn":["0146-9592","1539-4794"]},"publication_status":"published","intvolume":"        39","citation":{"chicago":"Pérez, A. M., T. Sh. Iskhakov, Polina Sharapova, S. Lemieux, O. V. Tikhonova, M. V. Chekhova, and G. Leuchs. “Bright Squeezed-Vacuum Source with 11 Spatial Mode.” <i>Optics Letters</i> 39, no. 8 (2014). <a href=\"https://doi.org/10.1364/ol.39.002403\">https://doi.org/10.1364/ol.39.002403</a>.","ieee":"A. M. Pérez <i>et al.</i>, “Bright squeezed-vacuum source with 11 spatial mode,” <i>Optics Letters</i>, vol. 39, no. 8, Art. no. 2403, 2014, doi: <a href=\"https://doi.org/10.1364/ol.39.002403\">10.1364/ol.39.002403</a>.","ama":"Pérez AM, Iskhakov TSh, Sharapova P, et al. Bright squeezed-vacuum source with 11 spatial mode. <i>Optics Letters</i>. 2014;39(8). doi:<a href=\"https://doi.org/10.1364/ol.39.002403\">10.1364/ol.39.002403</a>","mla":"Pérez, A. M., et al. “Bright Squeezed-Vacuum Source with 11 Spatial Mode.” <i>Optics Letters</i>, vol. 39, no. 8, 2403, The Optical Society, 2014, doi:<a href=\"https://doi.org/10.1364/ol.39.002403\">10.1364/ol.39.002403</a>.","bibtex":"@article{Pérez_Iskhakov_Sharapova_Lemieux_Tikhonova_Chekhova_Leuchs_2014, title={Bright squeezed-vacuum source with 11 spatial mode}, volume={39}, DOI={<a href=\"https://doi.org/10.1364/ol.39.002403\">10.1364/ol.39.002403</a>}, number={82403}, journal={Optics Letters}, publisher={The Optical Society}, author={Pérez, A. M. and Iskhakov, T. Sh. and Sharapova, Polina and Lemieux, S. and Tikhonova, O. V. and Chekhova, M. V. and Leuchs, G.}, year={2014} }","short":"A.M. Pérez, T.Sh. Iskhakov, P. Sharapova, S. Lemieux, O.V. Tikhonova, M.V. Chekhova, G. Leuchs, Optics Letters 39 (2014).","apa":"Pérez, A. M., Iskhakov, T. Sh., Sharapova, P., Lemieux, S., Tikhonova, O. V., Chekhova, M. V., &#38; Leuchs, G. (2014). Bright squeezed-vacuum source with 11 spatial mode. <i>Optics Letters</i>, <i>39</i>(8), Article 2403. <a href=\"https://doi.org/10.1364/ol.39.002403\">https://doi.org/10.1364/ol.39.002403</a>"},"year":"2014"},{"language":[{"iso":"eng"}],"article_number":"119-123","user_id":"16199","department":[{"_id":"293"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"}],"_id":"43198","status":"public","abstract":[{"lang":"eng","text":"Ultrafast charge transport in strongly biased semiconductors is at the heart of high-speed electronics, electro-optics and fundamental solid-state physics1,2,3,4,5,6,7,8,9,10,11,12,13. Intense light pulses in the terahertz spectral range have opened fascinating vistas14,15,16,17,18,19,20,21. Because terahertz photon energies are far below typical electronic interband resonances, a stable electromagnetic waveform may serve as a precisely adjustable bias5,11,17,19. Novel quantum phenomena have been anticipated for terahertz amplitudes, reaching atomic field strengths8,9,10. We exploit controlled (multi-)terahertz waveforms with peak fields of 72 MV cm−1 to drive coherent interband polarization combined with dynamical Bloch oscillations in semiconducting gallium selenide. These dynamics entail the emission of phase-stable high-harmonic transients, covering the entire terahertz-to-visible spectral domain between 0.1 and 675 THz. Quantum interference of different ionization paths of accelerated charge carriers is controlled via the waveform of the driving field and explained by a quantum theory of inter- and intraband dynamics. Our results pave the way towards all-coherent terahertz-rate electronics."}],"type":"journal_article","publication":"Nature Photonics","doi":"10.1038/nphoton.2013.349","title":"Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations","date_created":"2023-03-29T21:14:30Z","author":[{"first_name":"Torsten","full_name":"Meier, Torsten","id":"344","orcid":"0000-0001-8864-2072","last_name":"Meier"},{"full_name":"Schubert, O.","last_name":"Schubert","first_name":"O."},{"first_name":"M.","last_name":"Hohenleutner","full_name":"Hohenleutner, M."},{"last_name":"Langer","full_name":"Langer, F.","first_name":"F."},{"first_name":"B.","full_name":"Urbanek, B.","last_name":"Urbanek"},{"full_name":"Lange, C.","last_name":"Lange","first_name":"C."},{"last_name":"Huttner","full_name":"Huttner, U.","first_name":"U."},{"last_name":"Golde","full_name":"Golde, D.","first_name":"D."},{"full_name":"Kira, M.","last_name":"Kira","first_name":"M."},{"first_name":"S. W.","last_name":"Koch","full_name":"Koch, S. W."},{"full_name":"Huber, R.","last_name":"Huber","first_name":"R."}],"volume":8,"date_updated":"2025-12-16T16:48:01Z","publisher":"Nature Publishing Group","citation":{"ieee":"T. Meier <i>et al.</i>, “Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations,” <i>Nature Photonics</i>, vol. 8, no. 2, Art. no. 119–123, 2014, doi: <a href=\"https://doi.org/10.1038/nphoton.2013.349\">10.1038/nphoton.2013.349</a>.","chicago":"Meier, Torsten, O. Schubert, M. Hohenleutner, F. Langer, B. Urbanek, C. Lange, U. Huttner, et al. “Sub-Cycle Control of Terahertz High-Harmonic Generation by Dynamical Bloch Oscillations.” <i>Nature Photonics</i> 8, no. 2 (2014). <a href=\"https://doi.org/10.1038/nphoton.2013.349\">https://doi.org/10.1038/nphoton.2013.349</a>.","ama":"Meier T, Schubert O, Hohenleutner M, et al. Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations. <i>Nature Photonics</i>. 2014;8(2). doi:<a href=\"https://doi.org/10.1038/nphoton.2013.349\">10.1038/nphoton.2013.349</a>","apa":"Meier, T., Schubert, O., Hohenleutner, M., Langer, F., Urbanek, B., Lange, C., Huttner, U., Golde, D., Kira, M., Koch, S. W., &#38; Huber, R. (2014). Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations. <i>Nature Photonics</i>, <i>8</i>(2), Article 119–123. <a href=\"https://doi.org/10.1038/nphoton.2013.349\">https://doi.org/10.1038/nphoton.2013.349</a>","mla":"Meier, Torsten, et al. “Sub-Cycle Control of Terahertz High-Harmonic Generation by Dynamical Bloch Oscillations.” <i>Nature Photonics</i>, vol. 8, no. 2, 119–123, Nature Publishing Group, 2014, doi:<a href=\"https://doi.org/10.1038/nphoton.2013.349\">10.1038/nphoton.2013.349</a>.","bibtex":"@article{Meier_Schubert_Hohenleutner_Langer_Urbanek_Lange_Huttner_Golde_Kira_Koch_et al._2014, title={Sub-cycle control of terahertz high-harmonic generation by dynamical Bloch oscillations}, volume={8}, DOI={<a href=\"https://doi.org/10.1038/nphoton.2013.349\">10.1038/nphoton.2013.349</a>}, number={2119–123}, journal={Nature Photonics}, publisher={Nature Publishing Group}, author={Meier, Torsten and Schubert, O. and Hohenleutner, M. and Langer, F. and Urbanek, B. and Lange, C. and Huttner, U. and Golde, D. and Kira, M. and Koch, S. W. and et al.}, year={2014} }","short":"T. Meier, O. Schubert, M. Hohenleutner, F. Langer, B. Urbanek, C. Lange, U. Huttner, D. Golde, M. Kira, S.W. Koch, R. Huber, Nature Photonics 8 (2014)."},"intvolume":"         8","year":"2014","issue":"2"},{"year":"2014","intvolume":"        90","citation":{"short":"H. Saberi, T. Opatrný, K. Mølmer, A. del Campo, Physical Review A 90 (2014).","bibtex":"@article{Saberi_Opatrný_Mølmer_del Campo,_2014, title={Adiabatic tracking of quantum many-body dynamics}, volume={90}, DOI={<a href=\"https://doi.org/10.1103/PhysRevA.90.060301\">10.1103/PhysRevA.90.060301</a>}, number={6060301(R)}, journal={Physical Review A}, author={Saberi, H. and Opatrný, T. and Mølmer, K. and del Campo, A.}, year={2014} }","mla":"Saberi, H., et al. “Adiabatic Tracking of Quantum Many-Body Dynamics.” <i>Physical Review A</i>, vol. 90, no. 6, 060301(R), 2014, doi:<a href=\"https://doi.org/10.1103/PhysRevA.90.060301\">10.1103/PhysRevA.90.060301</a>.","apa":"Saberi, H., Opatrný, T., Mølmer, K., &#38; del Campo, A. (2014). Adiabatic tracking of quantum many-body dynamics. <i>Physical Review A</i>, <i>90</i>(6), Article 060301(R). <a href=\"https://doi.org/10.1103/PhysRevA.90.060301\">https://doi.org/10.1103/PhysRevA.90.060301</a>","ama":"Saberi H, Opatrný T, Mølmer K, del Campo, A. Adiabatic tracking of quantum many-body dynamics. <i>Physical Review A</i>. 2014;90(6). doi:<a href=\"https://doi.org/10.1103/PhysRevA.90.060301\">10.1103/PhysRevA.90.060301</a>","chicago":"Saberi, H., T. Opatrný, K. Mølmer, and A. del Campo,. “Adiabatic Tracking of Quantum Many-Body Dynamics.” <i>Physical Review A</i> 90, no. 6 (2014). <a href=\"https://doi.org/10.1103/PhysRevA.90.060301\">https://doi.org/10.1103/PhysRevA.90.060301</a>.","ieee":"H. Saberi, T. Opatrný, K. Mølmer, and A. del Campo, “Adiabatic tracking of quantum many-body dynamics,” <i>Physical Review A</i>, vol. 90, no. 6, Art. no. 060301(R), 2014, doi: <a href=\"https://doi.org/10.1103/PhysRevA.90.060301\">10.1103/PhysRevA.90.060301</a>."},"publication_status":"published","issue":"6","title":"Adiabatic tracking of quantum many-body dynamics","doi":"10.1103/PhysRevA.90.060301","main_file_link":[{"url":"https://journals.aps.org/pra/abstract/10.1103/PhysRevA.90.060301"}],"date_updated":"2025-12-16T16:51:07Z","volume":90,"author":[{"first_name":"H.","last_name":"Saberi","full_name":"Saberi, H."},{"full_name":"Opatrný, T.","last_name":"Opatrný","first_name":"T."},{"last_name":"Mølmer","full_name":"Mølmer, K.","first_name":"K."},{"first_name":"A.","full_name":"del Campo,, A.","last_name":"del Campo,"}],"date_created":"2023-04-01T20:56:48Z","abstract":[{"text":"The nonadiabatic dynamics of a many-body system driven through a quantum critical point can be controlled using counterdiabatic driving, where the formation of excitations is suppressed by assisting the dynamics with auxiliary multiple-body nonlocal interactions. We propose an alternative scheme which circumvents practical challenges to realize shortcuts to adiabaticity in mesoscopic systems by tailoring the functional form of the auxiliary counterdiabatic interactions. A driving scheme resorting in short-range few-body interactions is shown to generate an effectively adiabatic dynamics.","lang":"eng"}],"status":"public","publication":"Physical Review A","type":"journal_article","article_number":"060301(R)","language":[{"iso":"eng"}],"_id":"43251","department":[{"_id":"293"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"}],"user_id":"16199"},{"place":"Marburg","year":"2013","citation":{"ieee":"S. Barkhofen, <i>Microwave Measurements on n-Disk Systems and Investigation of Branching in correlated Potentials and turbulent Flows</i>. Marburg: Philipps-Universität Marburg, 2013.","chicago":"Barkhofen, Sonja. <i>Microwave Measurements on N-Disk Systems and Investigation of Branching in Correlated Potentials and Turbulent Flows</i>. Marburg: Philipps-Universität Marburg, 2013. <a href=\"https://doi.org/10.17192/Z2013.0457\">https://doi.org/10.17192/Z2013.0457</a>.","ama":"Barkhofen S. <i>Microwave Measurements on N-Disk Systems and Investigation of Branching in Correlated Potentials and Turbulent Flows</i>. Philipps-Universität Marburg; 2013. doi:<a href=\"https://doi.org/10.17192/Z2013.0457\">10.17192/Z2013.0457</a>","apa":"Barkhofen, S. (2013). <i>Microwave Measurements on n-Disk Systems and Investigation of Branching in correlated Potentials and turbulent Flows</i>. Philipps-Universität Marburg. <a href=\"https://doi.org/10.17192/Z2013.0457\">https://doi.org/10.17192/Z2013.0457</a>","bibtex":"@book{Barkhofen_2013, place={Marburg}, title={Microwave Measurements on n-Disk Systems and Investigation of Branching in correlated Potentials and turbulent Flows}, DOI={<a href=\"https://doi.org/10.17192/Z2013.0457\">10.17192/Z2013.0457</a>}, publisher={Philipps-Universität Marburg}, author={Barkhofen, Sonja}, year={2013} }","short":"S. Barkhofen, Microwave Measurements on N-Disk Systems and Investigation of Branching in Correlated Potentials and Turbulent Flows, Philipps-Universität Marburg, Marburg, 2013.","mla":"Barkhofen, Sonja. <i>Microwave Measurements on N-Disk Systems and Investigation of Branching in Correlated Potentials and Turbulent Flows</i>. Philipps-Universität Marburg, 2013, doi:<a href=\"https://doi.org/10.17192/Z2013.0457\">10.17192/Z2013.0457</a>."},"publication_status":"published","title":"Microwave Measurements on n-Disk Systems and Investigation of Branching in correlated Potentials and turbulent Flows","doi":"10.17192/Z2013.0457","publisher":"Philipps-Universität Marburg","date_updated":"2022-01-06T06:57:21Z","date_created":"2021-10-19T07:40:40Z","author":[{"full_name":"Barkhofen, Sonja","id":"48188","last_name":"Barkhofen","first_name":"Sonja"}],"supervisor":[{"first_name":"Ulrich","full_name":"Kuhl, Ulrich","last_name":"Kuhl"}],"abstract":[{"lang":"eng","text":"In dieser Arbeit wird die\r\n      Wellenausbreitung in drei verschiedenen komplexen Systemen\r\n      untersucht. In den ersten beiden geht es um Wellenausbreitung\r\n      in zufälligen Potentialen, einmal in einem Mikrowellenaufbau\r\n      und einmal in einem akustischen Experiment. Der Fokus liegt\r\n      hier auf den nicht-Gaußschen Eigenschaften der Messgrößen.\r\n      Das dritte System ist ein typisches Beispiel für\r\n      vollchaotische offene Systeme mit fraktalem Repeller. Damit\r\n      untersuchen wir die Verbindung zwischen klassischen\r\n      periodischen Bahnen und quantenmechanischen Größen. Im ersten\r\n      Experiment bauen wir in die Mikrowellenkavität ein Potential\r\n      ein, indem wir metallische Streukörper auf der Bodenplatte\r\n      zufällig verteilen. In ortsaufgelösten Messungen können wir\r\n      die gesamte Wellenfunktion untersuchen und finden starke\r\n      Fluktuationen in der Intensität der Wellenfunktion. Besonders\r\n      hohe Intensitäten finden sich dort, wo das analoge klassische\r\n      System Kaustiken ausbildet. Außerdem wird untersucht, in\r\n      welchem Abstand zur Quelle die Verästelungen starker\r\n      Intensität anfangen, und ihre Skalierung bezüglich der\r\n      Eigenschaften des Potentials getestet. Der vorhergesagte\r\n      Exponent von $-2/3$ kann reproduziert werden. Da bei den\r\n      hohen Frequenzen, bei denen gemessen wurde, mehrere Moden in\r\n      der Kavität offen sind, konnten zusätzlich Effekte durch\r\n      Interferenz von Moden und Koppeln zwischen Moden gefunden\r\n      werden, die nicht in den theoretischen Modellen\r\n      berücksichtigt sind. Erst ein störungstheoretischer Ansatz\r\n      für die Helmholtz-Gleichung zeigt für nicht parallele Deckel-\r\n      und Bodenplatte, dass es zusätzliche Quellterme für eine Mode\r\n      durch die jeweils anderen Moden gibt. Dieser Effekt kann in\r\n      dem experimentellen Daten bestätigt werden. Im zweiten\r\n      Experiment mit dem akustischen Aufbau wurde der Schall, der\r\n      von einer turbulenten Luftströmung verursacht wird, gemessen.\r\n      Die Ergebnisse weichen stark von einer Gaußverteilung der\r\n      Intensitäten ab, die der zentrale Grenzwertsatz vorhersagt.\r\n      In einem zweiten Experiment in einem großen Windkanal wird\r\n      zusätzlich ein Ton defnierter Frequenz durch den Luftstrom\r\n      gesendet. Die Hoffnung, aus der Modulation dieses Signals\r\n      Rück-schlüsse auf die Eigenschaften der Turbulenz ziehen zu\r\n      können, wird nicht erfüllt. Aber wieder wird nicht-Gaußsches\r\n      Verhalten gefunden. Für den dritten Teil der Arbeit kommen\r\n      wieder Mikrowellenexperimente zum Einsatz, um ein weiteres\r\n      komplexes System zu erforschen. Das sogenannte\r\n      emph{n}-Scheiben System besteht aus emph{n} gleich-artigen\r\n      Scheiben, die auf einem gleich-seitigen Polygon in einer\r\n      zweidimensionalen Ebene positioniert sind. In solch offenen\r\n      Systemen sind die Resonanzen nicht mehr reell, sondern\r\n      komplex. Diese aus unseren Messdaten zu extrahieren,\r\n      erfordert einen ausgefeilten Algorithmus, die harmonische\r\n      Inversion. Die Herausforderungen der Reso-nanzextrahierung\r\n      werden angesprochen und Lösungsvorschläge diskutiert. Die\r\n      letztendlich erhaltenen Resonanzen werden benutzt, um die\r\n      Zählfunktion der Realteile aufzustellen. Ihr Wachstum ist in\r\n      führender Ordnung durch die Hausdorff-Dimension gegeben. Die\r\n      Verteilung der Imaginärteile wird in Abhängigkeit der Öffnung\r\n      des Systems untersucht. Der größte der aus-schließlich\r\n      negativen Imaginärteile gibt die spektrale Lücke an. Diese\r\n      wird mit den Vorhersagen verglichen, die auf Berechnungen\r\n      über die periodischen Bahnen beruhen. Auch für die\r\n      Abhängigkeit des Maximums der Verteilung von der Öffnung des\r\n      Systems gibt es theoretische Annahmen, die auf ähnlichen\r\n      Berechnungen beruht. Diese konnte ebenfalls unterstützt\r\n      werden. Zusätzlich werden die experimentellen Resonanzen mit\r\n      quantenmechanischen Berechnung verglichen."},{"lang":"eng","text":"In this work we investigate the\r\n      wave propagation in three different complex systems. In the\r\n      first two systems we focus on the wave propagation through\r\n      random potentials, the first one in a microwave and the\r\n      second one in an acoustic setup. In both systems we focus on\r\n      the non-Gaussian properties of the measured quantities. The\r\n      third system is a paradigmatic example of a fully chaotic\r\n      open system with a fractal repeller. Here the relation of the\r\n      classical periodic orbits and quantum mechanical quantities\r\n      is studied. In the first experiment we induce a potential\r\n      into the microwave cavity by placing randomly distributed\r\n      metallic scatterers on the bottom plate. Spatially resolved\r\n      measurements of the full wave function reveal strong\r\n      intensity fluctuations and a condensation of the wave flow\r\n      along classical caustics. Additionally the scaling behavior\r\n      of the branching with respect to the standard deviation of\r\n      the potential is investigated and the predicted exponent of\r\n      $-2/3$ is reproduced. As there are several open modes in the\r\n      cavity due to the high frequency, effects of mode\r\n      interference and mode coupling are found and explained, which\r\n      go beyond the theoretical model. Perturbation theory of the\r\n      Helmholtz equation for non-parallel top and bottom plate\r\n      reveals extra source terms for the wave function, which are\r\n      induced by the other open modes. These dynamics are also\r\n      found in the experimental data. The second experiment deals\r\n      with an acoustic setup, where the sound of a turbulent air\r\n      flow is recorded. Here strong deviations from the central\r\n      limit theorem, which predicts a Gaussian distribution of wave\r\n      intensities, are observed. In a second experiment performed\r\n      in a wind tunnel a monochromatic sound wave is sent through\r\n      the air flow. The hope to learn something about the\r\n      properties of the turbulence by investigating the modulations\r\n      of the original sound is not met. But again non-Gaussian\r\n      behavior is found. In the third part of this thesis another\r\n      complex system is studied in a microwave setup: The\r\n      emph{n}-disk system consists of emph{n} equal disks placed on\r\n      an equilateral polygon in a two dimensional plane. Such an\r\n      open systems provides complex resonances, which are extracted\r\n      from our measured spectra via an elaborate algorithm, the\r\n      harmonic inversion. The challenges of this extraction are\r\n      discussed in detail and possible solutions for arising\r\n      problems are suggested. The finally obtained resonances are\r\n      used for the calculation of the counting function of the real\r\n      parts, whose growth is predicted by the Hausdorff dimension\r\n      as leading order. The distributions of the imaginary parts\r\n      are studied with respect to the opening of the system. The\r\n      largest (negative) imaginary part defines the spectral gap,\r\n      which is compared to predictions, which can be calculated by\r\n      using the periodic orbits of the system. By similar means a\r\n      suggestions for the development of the maximum of this\r\n      distribution is tested. Moreover the experimental data is\r\n      compared to the quantum mechanical calculation of the\r\n      system."}],"status":"public","type":"dissertation","language":[{"iso":"eng"}],"_id":"26522","department":[{"_id":"15"}],"user_id":"48188"},{"publication":"Optics Express","type":"journal_article","status":"public","_id":"21041","department":[{"_id":"15"}],"user_id":"27150","article_number":"13975-13985","language":[{"iso":"eng"}],"publication_identifier":{"issn":["1094-4087"]},"publication_status":"published","issue":"12","year":"2013","intvolume":"        21","citation":{"apa":"Harder, G., Ansari, V., Brecht, B., Dirmeier, T., Marquardt, C., &#38; Silberhorn, C. (2013). An optimized photon pair source for quantum circuits. <i>Optics Express</i>, <i>21</i>(12). <a href=\"https://doi.org/10.1364/oe.21.013975\">https://doi.org/10.1364/oe.21.013975</a>","short":"G. Harder, V. Ansari, B. Brecht, T. Dirmeier, C. Marquardt, C. Silberhorn, Optics Express 21 (2013).","bibtex":"@article{Harder_Ansari_Brecht_Dirmeier_Marquardt_Silberhorn_2013, title={An optimized photon pair source for quantum circuits}, volume={21}, DOI={<a href=\"https://doi.org/10.1364/oe.21.013975\">10.1364/oe.21.013975</a>}, number={1213975–13985}, journal={Optics Express}, author={Harder, Georg and Ansari, Vahid and Brecht, Benjamin and Dirmeier, Thomas and Marquardt, Christoph and Silberhorn, Christine}, year={2013} }","mla":"Harder, Georg, et al. “An Optimized Photon Pair Source for Quantum Circuits.” <i>Optics Express</i>, vol. 21, no. 12, 13975–13985, 2013, doi:<a href=\"https://doi.org/10.1364/oe.21.013975\">10.1364/oe.21.013975</a>.","ama":"Harder G, Ansari V, Brecht B, Dirmeier T, Marquardt C, Silberhorn C. An optimized photon pair source for quantum circuits. <i>Optics Express</i>. 2013;21(12). doi:<a href=\"https://doi.org/10.1364/oe.21.013975\">10.1364/oe.21.013975</a>","ieee":"G. Harder, V. Ansari, B. Brecht, T. Dirmeier, C. Marquardt, and C. Silberhorn, “An optimized photon pair source for quantum circuits,” <i>Optics Express</i>, vol. 21, no. 12, 2013.","chicago":"Harder, Georg, Vahid Ansari, Benjamin Brecht, Thomas Dirmeier, Christoph Marquardt, and Christine Silberhorn. “An Optimized Photon Pair Source for Quantum Circuits.” <i>Optics Express</i> 21, no. 12 (2013). <a href=\"https://doi.org/10.1364/oe.21.013975\">https://doi.org/10.1364/oe.21.013975</a>."},"date_updated":"2022-01-06T06:54:42Z","volume":21,"date_created":"2021-01-20T08:53:34Z","author":[{"full_name":"Harder, Georg","last_name":"Harder","first_name":"Georg"},{"full_name":"Ansari, Vahid","last_name":"Ansari","first_name":"Vahid"},{"first_name":"Benjamin","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","id":"27150","full_name":"Brecht, Benjamin"},{"last_name":"Dirmeier","full_name":"Dirmeier, Thomas","first_name":"Thomas"},{"first_name":"Christoph","full_name":"Marquardt, Christoph","last_name":"Marquardt"},{"last_name":"Silberhorn","id":"26263","full_name":"Silberhorn, Christine","first_name":"Christine"}],"title":"An optimized photon pair source for quantum circuits","doi":"10.1364/oe.21.013975"},{"type":"journal_article","publication":"New Journal of Physics","status":"public","_id":"21042","user_id":"27150","department":[{"_id":"15"}],"article_number":"053038","language":[{"iso":"eng"}],"publication_status":"published","publication_identifier":{"issn":["1367-2630"]},"year":"2013","citation":{"bibtex":"@article{Christ_Brecht_Mauerer_Silberhorn_2013, title={Theory of quantum frequency conversion and type-II parametric down-conversion in the high-gain regime}, volume={15}, DOI={<a href=\"https://doi.org/10.1088/1367-2630/15/5/053038\">10.1088/1367-2630/15/5/053038</a>}, number={053038}, journal={New Journal of Physics}, author={Christ, Andreas and Brecht, Benjamin and Mauerer, Wolfgang and Silberhorn, Christine}, year={2013} }","short":"A. Christ, B. Brecht, W. Mauerer, C. Silberhorn, New Journal of Physics 15 (2013).","mla":"Christ, Andreas, et al. “Theory of Quantum Frequency Conversion and Type-II Parametric down-Conversion in the High-Gain Regime.” <i>New Journal of Physics</i>, vol. 15, 053038, 2013, doi:<a href=\"https://doi.org/10.1088/1367-2630/15/5/053038\">10.1088/1367-2630/15/5/053038</a>.","apa":"Christ, A., Brecht, B., Mauerer, W., &#38; Silberhorn, C. (2013). Theory of quantum frequency conversion and type-II parametric down-conversion in the high-gain regime. <i>New Journal of Physics</i>, <i>15</i>. <a href=\"https://doi.org/10.1088/1367-2630/15/5/053038\">https://doi.org/10.1088/1367-2630/15/5/053038</a>","ieee":"A. Christ, B. Brecht, W. Mauerer, and C. Silberhorn, “Theory of quantum frequency conversion and type-II parametric down-conversion in the high-gain regime,” <i>New Journal of Physics</i>, vol. 15, 2013.","chicago":"Christ, Andreas, Benjamin Brecht, Wolfgang Mauerer, and Christine Silberhorn. “Theory of Quantum Frequency Conversion and Type-II Parametric down-Conversion in the High-Gain Regime.” <i>New Journal of Physics</i> 15 (2013). <a href=\"https://doi.org/10.1088/1367-2630/15/5/053038\">https://doi.org/10.1088/1367-2630/15/5/053038</a>.","ama":"Christ A, Brecht B, Mauerer W, Silberhorn C. Theory of quantum frequency conversion and type-II parametric down-conversion in the high-gain regime. <i>New Journal of Physics</i>. 2013;15. doi:<a href=\"https://doi.org/10.1088/1367-2630/15/5/053038\">10.1088/1367-2630/15/5/053038</a>"},"intvolume":"        15","date_updated":"2022-01-06T06:54:42Z","author":[{"first_name":"Andreas","full_name":"Christ, Andreas","last_name":"Christ"},{"full_name":"Brecht, Benjamin","id":"27150","last_name":"Brecht","orcid":"0000-0003-4140-0556 ","first_name":"Benjamin"},{"full_name":"Mauerer, Wolfgang","last_name":"Mauerer","first_name":"Wolfgang"},{"first_name":"Christine","last_name":"Silberhorn","full_name":"Silberhorn, Christine","id":"26263"}],"date_created":"2021-01-20T08:54:24Z","volume":15,"title":"Theory of quantum frequency conversion and type-II parametric down-conversion in the high-gain regime","doi":"10.1088/1367-2630/15/5/053038"},{"type":"journal_article","publication":"Physical Review A","status":"public","user_id":"27150","department":[{"_id":"15"}],"_id":"21043","language":[{"iso":"eng"}],"article_number":"053810","publication_status":"published","publication_identifier":{"issn":["1050-2947","1094-1622"]},"citation":{"ama":"Brecht B, Silberhorn C. Characterizing entanglement in pulsed parametric down-conversion using chronocyclic Wigner functions. <i>Physical Review A</i>. 2013;87. doi:<a href=\"https://doi.org/10.1103/physreva.87.053810\">10.1103/physreva.87.053810</a>","chicago":"Brecht, Benjamin, and Christine Silberhorn. “Characterizing Entanglement in Pulsed Parametric Down-Conversion Using Chronocyclic Wigner Functions.” <i>Physical Review A</i> 87 (2013). <a href=\"https://doi.org/10.1103/physreva.87.053810\">https://doi.org/10.1103/physreva.87.053810</a>.","ieee":"B. Brecht and C. Silberhorn, “Characterizing entanglement in pulsed parametric down-conversion using chronocyclic Wigner functions,” <i>Physical Review A</i>, vol. 87, 2013.","bibtex":"@article{Brecht_Silberhorn_2013, title={Characterizing entanglement in pulsed parametric down-conversion using chronocyclic Wigner functions}, volume={87}, DOI={<a href=\"https://doi.org/10.1103/physreva.87.053810\">10.1103/physreva.87.053810</a>}, number={053810}, journal={Physical Review A}, author={Brecht, Benjamin and Silberhorn, Christine}, year={2013} }","mla":"Brecht, Benjamin, and Christine Silberhorn. “Characterizing Entanglement in Pulsed Parametric Down-Conversion Using Chronocyclic Wigner Functions.” <i>Physical Review A</i>, vol. 87, 053810, 2013, doi:<a href=\"https://doi.org/10.1103/physreva.87.053810\">10.1103/physreva.87.053810</a>.","short":"B. Brecht, C. Silberhorn, Physical Review A 87 (2013).","apa":"Brecht, B., &#38; Silberhorn, C. (2013). Characterizing entanglement in pulsed parametric down-conversion using chronocyclic Wigner functions. <i>Physical Review A</i>, <i>87</i>. <a href=\"https://doi.org/10.1103/physreva.87.053810\">https://doi.org/10.1103/physreva.87.053810</a>"},"intvolume":"        87","year":"2013","author":[{"orcid":"0000-0003-4140-0556 ","last_name":"Brecht","full_name":"Brecht, Benjamin","id":"27150","first_name":"Benjamin"},{"full_name":"Silberhorn, Christine","id":"26263","last_name":"Silberhorn","first_name":"Christine"}],"date_created":"2021-01-20T08:54:53Z","volume":87,"date_updated":"2022-01-06T06:54:42Z","doi":"10.1103/physreva.87.053810","title":"Characterizing entanglement in pulsed parametric down-conversion using chronocyclic Wigner functions"}]