--- _id: '3888' abstract: - lang: eng text: 'We successfully developed a process to fabricate freestanding cubic aluminium nitride (c-AlN) membranes containing cubic gallium nitride (c-GaN) quantum dots (QDs). The samples were grown by plasma assisted molecular beam epitaxy (MBE). To realize the photonic crystal (PhC) membrane we have chosen a triangular array of holes. The array was fabricated by electron beam lithography and several steps of reactive ion etching (RIE) with the help of a hard mask and an undercut of the active layer. The r/a- ratio of 0.35 was deter- mined by numerical simulations to obtain a preferably wide photonic band gap. Micro-photoluminescence (μ-PL) measurements of the photonic crystals, in particular of a H1 and a L3 cavity, and the emission of the QD ensemble were performed to characterize the samples. The PhCs show high quality factors of 4400 for the H1 cavity and about 5000/3000 for two different modes of the L3 cavity, respectively. The energy of the fundamental modes is in good agreement to the numerical simulations. ' article_type: original author: - first_name: Sarah full_name: Blumenthal, Sarah last_name: Blumenthal - first_name: Matthias full_name: Bürger, Matthias last_name: Bürger - first_name: Andre full_name: Hildebrandt, Andre last_name: Hildebrandt - first_name: Jens full_name: Förstner, Jens id: '158' last_name: Förstner orcid: 0000-0001-7059-9862 - first_name: Nils full_name: Weber, Nils last_name: Weber - first_name: Cedrik full_name: Meier, Cedrik id: '20798' last_name: Meier orcid: https://orcid.org/0000-0002-3787-3572 - first_name: Dirk full_name: Reuter, Dirk id: '37763' last_name: Reuter - first_name: Donat J. full_name: As, Donat J. id: '14' last_name: As orcid: 0000-0003-1121-3565 citation: ama: Blumenthal S, Bürger M, Hildebrandt A, et al. Fabrication and characterization of two-dimensional cubic AlN photonic crystal membranes containing zincblende GaN quantum dots. physica status solidi (c). 2016;13(5-6):292-296. doi:10.1002/pssc.201600010 apa: Blumenthal, S., Bürger, M., Hildebrandt, A., Förstner, J., Weber, N., Meier, C., Reuter, D., & As, D. J. (2016). Fabrication and characterization of two-dimensional cubic AlN photonic crystal membranes containing zincblende GaN quantum dots. Physica Status Solidi (c), 13(5–6), 292–296. https://doi.org/10.1002/pssc.201600010 bibtex: '@article{Blumenthal_Bürger_Hildebrandt_Förstner_Weber_Meier_Reuter_As_2016, title={Fabrication and characterization of two-dimensional cubic AlN photonic crystal membranes containing zincblende GaN quantum dots}, volume={13}, DOI={10.1002/pssc.201600010}, number={5–6}, journal={physica status solidi (c)}, publisher={Wiley}, author={Blumenthal, Sarah and Bürger, Matthias and Hildebrandt, Andre and Förstner, Jens and Weber, Nils and Meier, Cedrik and Reuter, Dirk and As, Donat J.}, year={2016}, pages={292–296} }' chicago: 'Blumenthal, Sarah, Matthias Bürger, Andre Hildebrandt, Jens Förstner, Nils Weber, Cedrik Meier, Dirk Reuter, and Donat J. As. “Fabrication and Characterization of Two-Dimensional Cubic AlN Photonic Crystal Membranes Containing Zincblende GaN Quantum Dots.” Physica Status Solidi (c) 13, no. 5–6 (2016): 292–96. https://doi.org/10.1002/pssc.201600010.' ieee: 'S. Blumenthal et al., “Fabrication and characterization of two-dimensional cubic AlN photonic crystal membranes containing zincblende GaN quantum dots,” physica status solidi (c), vol. 13, no. 5–6, pp. 292–296, 2016, doi: 10.1002/pssc.201600010.' mla: Blumenthal, Sarah, et al. “Fabrication and Characterization of Two-Dimensional Cubic AlN Photonic Crystal Membranes Containing Zincblende GaN Quantum Dots.” Physica Status Solidi (c), vol. 13, no. 5–6, Wiley, 2016, pp. 292–96, doi:10.1002/pssc.201600010. short: S. Blumenthal, M. Bürger, A. Hildebrandt, J. Förstner, N. Weber, C. Meier, D. Reuter, D.J. As, Physica Status Solidi (c) 13 (2016) 292–296. date_created: 2018-08-13T09:14:58Z date_updated: 2023-10-09T09:06:08Z ddc: - '530' department: - _id: '61' - _id: '284' - _id: '290' - _id: '292' - _id: '287' - _id: '35' - _id: '230' doi: 10.1002/pssc.201600010 file: - access_level: closed content_type: application/pdf creator: hclaudia date_created: 2018-08-13T09:20:05Z date_updated: 2018-08-13T09:20:05Z file_id: '3889' file_name: 2016-04 Blumenthal_et_al_Fabrication and characterization of two-dimensional cubic AlN photonic crystal membranes containing zincblende GaN quantum dots_physica_status_solidi_(c).pdf file_size: 1119165 relation: main_file success: 1 file_date_updated: 2018-08-13T09:20:05Z has_accepted_license: '1' intvolume: ' 13' issue: 5-6 keyword: - tet_topic_phc - tet_topic_qd language: - iso: eng page: 292-296 publication: physica status solidi (c) publication_identifier: issn: - 1862-6351 publication_status: published publisher: Wiley status: public title: Fabrication and characterization of two-dimensional cubic AlN photonic crystal membranes containing zincblende GaN quantum dots type: journal_article user_id: '14931' volume: 13 year: '2016' ... --- _id: '4237' abstract: - lang: eng text: "We report the fabrication of periodically poled domain patterns in x-cut lithium niobate thin-film.\r\nHere, thin films on insulator have drawn particular attention due to their intrinsic waveguiding\r\nproperties offering high mode confinement and smaller devices compared to in-diffused waveguides\r\nin bulk material. In contrast to z-cut thin film lithium niobate, the x-cut geometry does not\r\nrequire back electrodes for poling. Further, the x-cut geometry grants direct access to the largest\r\nnonlinear and electro-optical tensor element, which overall promises smaller devices. The domain\r\ninversion was realized via electric field poling utilizing deposited aluminum top electrodes on a\r\nstack of LN thin film/SiO2 layer/Bulk LN, which were patterned by optical lithography. The periodic\r\ndomain inversion was verified by non-invasive confocal second harmonic microscopy. Our\r\nresults show domain patterns in accordance to the electrode mask layout. The second harmonic signatures\r\ncan be interpreted in terms of spatially, overlapping domain filaments which start their\r\ngrowth on the þz side." article_number: '152902' article_type: original author: - first_name: P. full_name: Mackwitz, P. last_name: Mackwitz - first_name: Michael full_name: Rüsing, Michael id: '22501' last_name: Rüsing orcid: 0000-0003-4682-4577 - first_name: Gerhard full_name: Berth, Gerhard id: '53' last_name: Berth - first_name: A. full_name: Widhalm, A. last_name: Widhalm - first_name: K. full_name: Müller, K. last_name: Müller - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 citation: ama: Mackwitz P, Rüsing M, Berth G, Widhalm A, Müller K, Zrenner A. Periodic domain inversion in x-cut single-crystal lithium niobate thin film. Applied Physics Letters. 2016;108(15). doi:10.1063/1.4946010 apa: Mackwitz, P., Rüsing, M., Berth, G., Widhalm, A., Müller, K., & Zrenner, A. (2016). Periodic domain inversion in x-cut single-crystal lithium niobate thin film. Applied Physics Letters, 108(15), Article 152902. https://doi.org/10.1063/1.4946010 bibtex: '@article{Mackwitz_Rüsing_Berth_Widhalm_Müller_Zrenner_2016, title={Periodic domain inversion in x-cut single-crystal lithium niobate thin film}, volume={108}, DOI={10.1063/1.4946010}, number={15152902}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Mackwitz, P. and Rüsing, Michael and Berth, Gerhard and Widhalm, A. and Müller, K. and Zrenner, Artur}, year={2016} }' chicago: Mackwitz, P., Michael Rüsing, Gerhard Berth, A. Widhalm, K. Müller, and Artur Zrenner. “Periodic Domain Inversion in X-Cut Single-Crystal Lithium Niobate Thin Film.” Applied Physics Letters 108, no. 15 (2016). https://doi.org/10.1063/1.4946010. ieee: 'P. Mackwitz, M. Rüsing, G. Berth, A. Widhalm, K. Müller, and A. Zrenner, “Periodic domain inversion in x-cut single-crystal lithium niobate thin film,” Applied Physics Letters, vol. 108, no. 15, Art. no. 152902, 2016, doi: 10.1063/1.4946010.' mla: Mackwitz, P., et al. “Periodic Domain Inversion in X-Cut Single-Crystal Lithium Niobate Thin Film.” Applied Physics Letters, vol. 108, no. 15, 152902, AIP Publishing, 2016, doi:10.1063/1.4946010. short: P. Mackwitz, M. Rüsing, G. Berth, A. Widhalm, K. Müller, A. Zrenner, Applied Physics Letters 108 (2016). date_created: 2018-08-29T08:16:14Z date_updated: 2023-10-09T08:05:45Z department: - _id: '15' - _id: '230' - _id: '35' doi: 10.1063/1.4946010 intvolume: ' 108' issue: '15' language: - iso: eng project: - _id: '53' grant_number: '231447078' name: TRR 142 - _id: '55' name: TRR 142 - Project Area B - _id: '68' grant_number: '231447078' name: TRR 142 - Subproject B3 publication: Applied Physics Letters publication_identifier: issn: - 0003-6951 - 1077-3118 publication_status: published publisher: AIP Publishing status: public title: Periodic domain inversion in x-cut single-crystal lithium niobate thin film type: journal_article user_id: '14931' volume: 108 year: '2016' ... --- _id: '4240' abstract: - lang: eng text: Cubic gallium nitride (GaN) films are analyzed with highresolution X-ray diffraction (HRXRD) and Raman spectroscopy. Several cubic GaN layers were grown on 3C-SiC (001) substrate by radio-frequency plasma-assisted molecular beam epitaxy. The layer thickness of the cubic GaN was varied between 75 and 505 nm. The HRXRD analysis reveals a reduction of the full-width at half-maximum (FWHM) of omega scans for growing layer thicknesses, which is caused by a partial compensation of defects. The Raman characterization confirms well-formed c-GaN layers. A more detailed examination of the longitudinal optical mode hints at a correlation of the FWHM of the Raman mode with the dislocation density, which shows the possibility to determine dislocation densities by Ramanspectroscopy on a micrometer scale, which is not possible by HRXRD. Furthermore, this Raman analysis shows that normalized Raman spectra present an alternative way to determine layer thicknesses of thin GaN films. article_type: original author: - first_name: Michael full_name: Rüsing, Michael id: '22501' last_name: Rüsing orcid: 0000-0003-4682-4577 - first_name: T. full_name: Wecker, T. last_name: Wecker - first_name: Gerhard full_name: Berth, Gerhard id: '53' last_name: Berth - first_name: Donat Josef full_name: As, Donat Josef id: '14' last_name: As orcid: 0000-0003-1121-3565 - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 citation: ama: Rüsing M, Wecker T, Berth G, As DJ, Zrenner A. Joint Raman spectroscopy and HRXRD investigation of cubic gallium nitride layers grown on 3C-SiC. physica status solidi (b). 2016;253(4):778-782. doi:10.1002/pssb.201552592 apa: Rüsing, M., Wecker, T., Berth, G., As, D. J., & Zrenner, A. (2016). Joint Raman spectroscopy and HRXRD investigation of cubic gallium nitride layers grown on 3C-SiC. Physica Status Solidi (b), 253(4), 778–782. https://doi.org/10.1002/pssb.201552592 bibtex: '@article{Rüsing_Wecker_Berth_As_Zrenner_2016, title={Joint Raman spectroscopy and HRXRD investigation of cubic gallium nitride layers grown on 3C-SiC}, volume={253}, DOI={10.1002/pssb.201552592}, number={4}, journal={physica status solidi (b)}, publisher={Wiley}, author={Rüsing, Michael and Wecker, T. and Berth, Gerhard and As, Donat Josef and Zrenner, Artur}, year={2016}, pages={778–782} }' chicago: 'Rüsing, Michael, T. Wecker, Gerhard Berth, Donat Josef As, and Artur Zrenner. “Joint Raman Spectroscopy and HRXRD Investigation of Cubic Gallium Nitride Layers Grown on 3C-SiC.” Physica Status Solidi (b) 253, no. 4 (2016): 778–82. https://doi.org/10.1002/pssb.201552592.' ieee: 'M. Rüsing, T. Wecker, G. Berth, D. J. As, and A. Zrenner, “Joint Raman spectroscopy and HRXRD investigation of cubic gallium nitride layers grown on 3C-SiC,” physica status solidi (b), vol. 253, no. 4, pp. 778–782, 2016, doi: 10.1002/pssb.201552592.' mla: Rüsing, Michael, et al. “Joint Raman Spectroscopy and HRXRD Investigation of Cubic Gallium Nitride Layers Grown on 3C-SiC.” Physica Status Solidi (b), vol. 253, no. 4, Wiley, 2016, pp. 778–82, doi:10.1002/pssb.201552592. short: M. Rüsing, T. Wecker, G. Berth, D.J. As, A. Zrenner, Physica Status Solidi (b) 253 (2016) 778–782. date_created: 2018-08-29T08:24:01Z date_updated: 2023-10-09T08:48:35Z department: - _id: '15' - _id: '230' - _id: '35' doi: 10.1002/pssb.201552592 intvolume: ' 253' issue: '4' keyword: - cubic gallium nitride - dislocation density - HRXRD - Raman spectroscopy language: - iso: eng page: 778-782 project: - _id: '53' grant_number: '231447078' name: TRR 142 - _id: '55' name: TRR 142 - Project Area B - _id: '68' grant_number: '231447078' name: TRR 142 - Subproject B3 publication: physica status solidi (b) publication_identifier: issn: - 0370-1972 publication_status: published publisher: Wiley status: public title: Joint Raman spectroscopy and HRXRD investigation of cubic gallium nitride layers grown on 3C-SiC type: journal_article user_id: '14931' volume: 253 year: '2016' ... --- _id: '10026' abstract: - lang: eng text: "Congruent lithium niobate and lithium tantalate mixed crystals have been grown over the complete\r\ncompositional range with the Czochralski method. The structural and vibrational properties of the mixed\r\ncrystals are studied extensively by x-ray diffraction measurements, Raman spectroscopy, and density functional\r\ntheory. The measured lattice parameters and vibrational frequencies are in good agreement with our theoretical\r\npredictions. The observed dependence of the Raman frequencies on the crystal composition is discussed on the\r\nbasis of the calculated phonon displacement patterns. The phononic contribution to the static dielectric tensor\r\nis calculated by means of the generalized Lyddane-Sachs-Teller relation. Due to the pronounced dependence of\r\nthe optical response on the Ta concentration, lithium niobate tantalate mixed crystals represent a perfect model\r\nsystem to study the properties of uniaxial mixed ferroelectric materials for application in integrated optics." author: - first_name: Michael full_name: Rüsing, Michael id: '22501' last_name: Rüsing orcid: 0000-0003-4682-4577 - first_name: Simone full_name: Sanna, Simone last_name: Sanna - first_name: Sergej full_name: Neufeld, Sergej id: '23261' last_name: Neufeld - first_name: Gerhard full_name: Berth, Gerhard id: '53' last_name: Berth - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: Artur full_name: Zrenner, Artur id: '606' last_name: Zrenner orcid: 0000-0002-5190-0944 - first_name: H. full_name: Yu, H. last_name: Yu - first_name: Y. full_name: Wang, Y. last_name: Wang - first_name: H. full_name: Zhang, H. last_name: Zhang citation: ama: Rüsing M, Sanna S, Neufeld S, et al. Vibrational properties of LiNb1−xTaxO3 mixed crystals. Physical Review B. Published online 2016. doi:10.1103/physrevb.93.184305 apa: Rüsing, M., Sanna, S., Neufeld, S., Berth, G., Schmidt, W. G., Zrenner, A., Yu, H., Wang, Y., & Zhang, H. (2016). Vibrational properties of LiNb1−xTaxO3 mixed crystals. Physical Review B. https://doi.org/10.1103/physrevb.93.184305 bibtex: '@article{Rüsing_Sanna_Neufeld_Berth_Schmidt_Zrenner_Yu_Wang_Zhang_2016, title={Vibrational properties of LiNb1−xTaxO3 mixed crystals}, DOI={10.1103/physrevb.93.184305}, journal={Physical Review B}, author={Rüsing, Michael and Sanna, Simone and Neufeld, Sergej and Berth, Gerhard and Schmidt, Wolf Gero and Zrenner, Artur and Yu, H. and Wang, Y. and Zhang, H.}, year={2016} }' chicago: Rüsing, Michael, Simone Sanna, Sergej Neufeld, Gerhard Berth, Wolf Gero Schmidt, Artur Zrenner, H. Yu, Y. Wang, and H. Zhang. “Vibrational Properties of LiNb1−xTaxO3 Mixed Crystals.” Physical Review B, 2016. https://doi.org/10.1103/physrevb.93.184305. ieee: 'M. Rüsing et al., “Vibrational properties of LiNb1−xTaxO3 mixed crystals,” Physical Review B, 2016, doi: 10.1103/physrevb.93.184305.' mla: Rüsing, Michael, et al. “Vibrational Properties of LiNb1−xTaxO3 Mixed Crystals.” Physical Review B, 2016, doi:10.1103/physrevb.93.184305. short: M. Rüsing, S. Sanna, S. Neufeld, G. Berth, W.G. Schmidt, A. Zrenner, H. Yu, Y. Wang, H. Zhang, Physical Review B (2016). date_created: 2019-05-29T07:55:07Z date_updated: 2023-10-11T07:28:32Z department: - _id: '15' - _id: '170' - _id: '295' - _id: '230' doi: 10.1103/physrevb.93.184305 funded_apc: '1' language: - iso: eng project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '53' grant_number: '231447078' name: TRR 142 - _id: '55' name: TRR 142 - Project Area B - _id: '69' grant_number: '231447078' name: TRR 142 - Subproject B4 - _id: '68' grant_number: '231447078' name: TRR 142 - Subproject B3 publication: Physical Review B publication_identifier: issn: - 2469-9950 - 2469-9969 publication_status: published status: public title: Vibrational properties of LiNb1−xTaxO3 mixed crystals type: journal_article user_id: '22501' year: '2016' ... --- _id: '39674' article_number: '081107' author: - first_name: B. full_name: Atorf, B. last_name: Atorf - first_name: H. full_name: Rasouli, H. last_name: Rasouli - first_name: G. full_name: Nordendorf, G. last_name: Nordendorf - first_name: D. full_name: Wilkes, D. last_name: Wilkes - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: Atorf B, Rasouli H, Nordendorf G, Wilkes D, Kitzerow H-S. Near infrared Kerr effect and description of field-induced phase transitions in polymer-stabilized blue phase liquid crystals. Applied Physics Letters. 2016;108(8). doi:10.1063/1.4942604 apa: Atorf, B., Rasouli, H., Nordendorf, G., Wilkes, D., & Kitzerow, H.-S. (2016). Near infrared Kerr effect and description of field-induced phase transitions in polymer-stabilized blue phase liquid crystals. Applied Physics Letters, 108(8), Article 081107. https://doi.org/10.1063/1.4942604 bibtex: '@article{Atorf_Rasouli_Nordendorf_Wilkes_Kitzerow_2016, title={Near infrared Kerr effect and description of field-induced phase transitions in polymer-stabilized blue phase liquid crystals}, volume={108}, DOI={10.1063/1.4942604}, number={8081107}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Atorf, B. and Rasouli, H. and Nordendorf, G. and Wilkes, D. and Kitzerow, Heinz-Siegfried}, year={2016} }' chicago: Atorf, B., H. Rasouli, G. Nordendorf, D. Wilkes, and Heinz-Siegfried Kitzerow. “Near Infrared Kerr Effect and Description of Field-Induced Phase Transitions in Polymer-Stabilized Blue Phase Liquid Crystals.” Applied Physics Letters 108, no. 8 (2016). https://doi.org/10.1063/1.4942604. ieee: 'B. Atorf, H. Rasouli, G. Nordendorf, D. Wilkes, and H.-S. Kitzerow, “Near infrared Kerr effect and description of field-induced phase transitions in polymer-stabilized blue phase liquid crystals,” Applied Physics Letters, vol. 108, no. 8, Art. no. 081107, 2016, doi: 10.1063/1.4942604.' mla: Atorf, B., et al. “Near Infrared Kerr Effect and Description of Field-Induced Phase Transitions in Polymer-Stabilized Blue Phase Liquid Crystals.” Applied Physics Letters, vol. 108, no. 8, 081107, AIP Publishing, 2016, doi:10.1063/1.4942604. short: B. Atorf, H. Rasouli, G. Nordendorf, D. Wilkes, H.-S. Kitzerow, Applied Physics Letters 108 (2016). date_created: 2023-01-24T17:51:24Z date_updated: 2023-01-24T17:51:54Z department: - _id: '313' - _id: '230' - _id: '638' doi: 10.1063/1.4942604 intvolume: ' 108' issue: '8' keyword: - Physics and Astronomy (miscellaneous) language: - iso: eng publication: Applied Physics Letters publication_identifier: issn: - 0003-6951 - 1077-3118 publication_status: published publisher: AIP Publishing status: public title: Near infrared Kerr effect and description of field-induced phase transitions in polymer-stabilized blue phase liquid crystals type: journal_article user_id: '254' volume: 108 year: '2016' ... --- _id: '39968' author: - first_name: David full_name: Dunmur, David last_name: Dunmur - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: Dunmur D, Kitzerow H-S. The International Liquid Crystal Society 1990–2015. Liquid Crystals Today. 2016;25(2):24-29. doi:10.1080/1358314x.2016.1151994 apa: Dunmur, D., & Kitzerow, H.-S. (2016). The International Liquid Crystal Society 1990–2015. Liquid Crystals Today, 25(2), 24–29. https://doi.org/10.1080/1358314x.2016.1151994 bibtex: '@article{Dunmur_Kitzerow_2016, title={The International Liquid Crystal Society 1990–2015}, volume={25}, DOI={10.1080/1358314x.2016.1151994}, number={2}, journal={Liquid Crystals Today}, publisher={Informa UK Limited}, author={Dunmur, David and Kitzerow, Heinz-Siegfried}, year={2016}, pages={24–29} }' chicago: 'Dunmur, David, and Heinz-Siegfried Kitzerow. “The International Liquid Crystal Society 1990–2015.” Liquid Crystals Today 25, no. 2 (2016): 24–29. https://doi.org/10.1080/1358314x.2016.1151994.' ieee: 'D. Dunmur and H.-S. Kitzerow, “The International Liquid Crystal Society 1990–2015,” Liquid Crystals Today, vol. 25, no. 2, pp. 24–29, 2016, doi: 10.1080/1358314x.2016.1151994.' mla: Dunmur, David, and Heinz-Siegfried Kitzerow. “The International Liquid Crystal Society 1990–2015.” Liquid Crystals Today, vol. 25, no. 2, Informa UK Limited, 2016, pp. 24–29, doi:10.1080/1358314x.2016.1151994. short: D. Dunmur, H.-S. Kitzerow, Liquid Crystals Today 25 (2016) 24–29. date_created: 2023-01-25T11:22:50Z date_updated: 2023-01-25T11:23:25Z department: - _id: '313' - _id: '230' - _id: '638' doi: 10.1080/1358314x.2016.1151994 intvolume: ' 25' issue: '2' keyword: - Materials Chemistry - Inorganic Chemistry - Condensed Matter Physics language: - iso: eng page: 24-29 publication: Liquid Crystals Today publication_identifier: issn: - 1358-314X - 1464-5181 publication_status: published publisher: Informa UK Limited status: public title: The International Liquid Crystal Society 1990–2015 type: journal_article user_id: '254' volume: 25 year: '2016' ... --- _id: '39669' abstract: - lang: eng text:

Polymer-stabilized blue phase liquid crystal in-plane switching cell.

author: - first_name: Gaby full_name: Nordendorf, Gaby last_name: Nordendorf - first_name: Jürgen full_name: Schmidtke, Jürgen last_name: Schmidtke - first_name: David full_name: Wilkes, David last_name: Wilkes - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: Nordendorf G, Schmidtke J, Wilkes D, Kitzerow H-S. Temperature-insensitive electro-optic response of polymer-stabilized blue phases. Journal of Materials Chemistry C. 2016;5(3):518-521. doi:10.1039/c6tc04679g apa: Nordendorf, G., Schmidtke, J., Wilkes, D., & Kitzerow, H.-S. (2016). Temperature-insensitive electro-optic response of polymer-stabilized blue phases. Journal of Materials Chemistry C, 5(3), 518–521. https://doi.org/10.1039/c6tc04679g bibtex: '@article{Nordendorf_Schmidtke_Wilkes_Kitzerow_2016, title={Temperature-insensitive electro-optic response of polymer-stabilized blue phases}, volume={5}, DOI={10.1039/c6tc04679g}, number={3}, journal={Journal of Materials Chemistry C}, publisher={Royal Society of Chemistry (RSC)}, author={Nordendorf, Gaby and Schmidtke, Jürgen and Wilkes, David and Kitzerow, Heinz-Siegfried}, year={2016}, pages={518–521} }' chicago: 'Nordendorf, Gaby, Jürgen Schmidtke, David Wilkes, and Heinz-Siegfried Kitzerow. “Temperature-Insensitive Electro-Optic Response of Polymer-Stabilized Blue Phases.” Journal of Materials Chemistry C 5, no. 3 (2016): 518–21. https://doi.org/10.1039/c6tc04679g.' ieee: 'G. Nordendorf, J. Schmidtke, D. Wilkes, and H.-S. Kitzerow, “Temperature-insensitive electro-optic response of polymer-stabilized blue phases,” Journal of Materials Chemistry C, vol. 5, no. 3, pp. 518–521, 2016, doi: 10.1039/c6tc04679g.' mla: Nordendorf, Gaby, et al. “Temperature-Insensitive Electro-Optic Response of Polymer-Stabilized Blue Phases.” Journal of Materials Chemistry C, vol. 5, no. 3, Royal Society of Chemistry (RSC), 2016, pp. 518–21, doi:10.1039/c6tc04679g. short: G. Nordendorf, J. Schmidtke, D. Wilkes, H.-S. Kitzerow, Journal of Materials Chemistry C 5 (2016) 518–521. date_created: 2023-01-24T17:45:08Z date_updated: 2023-01-24T17:45:45Z department: - _id: '313' - _id: '230' - _id: '638' doi: 10.1039/c6tc04679g intvolume: ' 5' issue: '3' keyword: - Materials Chemistry - General Chemistry language: - iso: eng page: 518-521 publication: Journal of Materials Chemistry C publication_identifier: issn: - 2050-7526 - 2050-7534 publication_status: published publisher: Royal Society of Chemistry (RSC) status: public title: Temperature-insensitive electro-optic response of polymer-stabilized blue phases type: journal_article user_id: '254' volume: 5 year: '2016' ... --- _id: '39673' article_number: '22718' author: - first_name: M. full_name: Wahle, M. last_name: Wahle - first_name: J. full_name: Ebel, J. last_name: Ebel - first_name: D. full_name: Wilkes, D. last_name: Wilkes - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: Wahle M, Ebel J, Wilkes D, Kitzerow H-S. Asymmetric band gap shift in electrically addressed blue phase photonic crystal fibers. Optics Express. 2016;24(20). doi:10.1364/oe.24.022718 apa: Wahle, M., Ebel, J., Wilkes, D., & Kitzerow, H.-S. (2016). Asymmetric band gap shift in electrically addressed blue phase photonic crystal fibers. Optics Express, 24(20), Article 22718. https://doi.org/10.1364/oe.24.022718 bibtex: '@article{Wahle_Ebel_Wilkes_Kitzerow_2016, title={Asymmetric band gap shift in electrically addressed blue phase photonic crystal fibers}, volume={24}, DOI={10.1364/oe.24.022718}, number={2022718}, journal={Optics Express}, publisher={The Optical Society}, author={Wahle, M. and Ebel, J. and Wilkes, D. and Kitzerow, Heinz-Siegfried}, year={2016} }' chicago: Wahle, M., J. Ebel, D. Wilkes, and Heinz-Siegfried Kitzerow. “Asymmetric Band Gap Shift in Electrically Addressed Blue Phase Photonic Crystal Fibers.” Optics Express 24, no. 20 (2016). https://doi.org/10.1364/oe.24.022718. ieee: 'M. Wahle, J. Ebel, D. Wilkes, and H.-S. Kitzerow, “Asymmetric band gap shift in electrically addressed blue phase photonic crystal fibers,” Optics Express, vol. 24, no. 20, Art. no. 22718, 2016, doi: 10.1364/oe.24.022718.' mla: Wahle, M., et al. “Asymmetric Band Gap Shift in Electrically Addressed Blue Phase Photonic Crystal Fibers.” Optics Express, vol. 24, no. 20, 22718, The Optical Society, 2016, doi:10.1364/oe.24.022718. short: M. Wahle, J. Ebel, D. Wilkes, H.-S. Kitzerow, Optics Express 24 (2016). date_created: 2023-01-24T17:50:16Z date_updated: 2023-01-24T17:51:04Z department: - _id: '313' - _id: '230' - _id: '638' doi: 10.1364/oe.24.022718 intvolume: ' 24' issue: '20' keyword: - Atomic and Molecular Physics - and Optics language: - iso: eng publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published publisher: The Optical Society status: public title: Asymmetric band gap shift in electrically addressed blue phase photonic crystal fibers type: journal_article user_id: '254' volume: 24 year: '2016' ... --- _id: '39671' article_number: '22718' author: - first_name: M. full_name: Wahle, M. last_name: Wahle - first_name: J. full_name: Ebel, J. last_name: Ebel - first_name: D. full_name: Wilkes, D. last_name: Wilkes - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: Wahle M, Ebel J, Wilkes D, Kitzerow H-S. Asymmetric band gap shift in electrically addressed blue phase photonic crystal fibers. Optics Express. 2016;24(20). doi:10.1364/oe.24.022718 apa: Wahle, M., Ebel, J., Wilkes, D., & Kitzerow, H.-S. (2016). Asymmetric band gap shift in electrically addressed blue phase photonic crystal fibers. Optics Express, 24(20), Article 22718. https://doi.org/10.1364/oe.24.022718 bibtex: '@article{Wahle_Ebel_Wilkes_Kitzerow_2016, title={Asymmetric band gap shift in electrically addressed blue phase photonic crystal fibers}, volume={24}, DOI={10.1364/oe.24.022718}, number={2022718}, journal={Optics Express}, publisher={The Optical Society}, author={Wahle, M. and Ebel, J. and Wilkes, D. and Kitzerow, Heinz-Siegfried}, year={2016} }' chicago: Wahle, M., J. Ebel, D. Wilkes, and Heinz-Siegfried Kitzerow. “Asymmetric Band Gap Shift in Electrically Addressed Blue Phase Photonic Crystal Fibers.” Optics Express 24, no. 20 (2016). https://doi.org/10.1364/oe.24.022718. ieee: 'M. Wahle, J. Ebel, D. Wilkes, and H.-S. Kitzerow, “Asymmetric band gap shift in electrically addressed blue phase photonic crystal fibers,” Optics Express, vol. 24, no. 20, Art. no. 22718, 2016, doi: 10.1364/oe.24.022718.' mla: Wahle, M., et al. “Asymmetric Band Gap Shift in Electrically Addressed Blue Phase Photonic Crystal Fibers.” Optics Express, vol. 24, no. 20, 22718, The Optical Society, 2016, doi:10.1364/oe.24.022718. short: M. Wahle, J. Ebel, D. Wilkes, H.-S. Kitzerow, Optics Express 24 (2016). date_created: 2023-01-24T17:47:33Z date_updated: 2023-01-24T17:48:18Z department: - _id: '313' - _id: '230' - _id: '638' doi: 10.1364/oe.24.022718 intvolume: ' 24' issue: '20' keyword: - Atomic and Molecular Physics - and Optics language: - iso: eng publication: Optics Express publication_identifier: issn: - 1094-4087 publication_status: published publisher: The Optical Society status: public title: Asymmetric band gap shift in electrically addressed blue phase photonic crystal fibers type: journal_article user_id: '254' volume: 24 year: '2016' ... --- _id: '39670' author: - first_name: Anshul full_name: Sharma, Anshul last_name: Sharma - first_name: Martin full_name: Urbanski, Martin last_name: Urbanski - first_name: Taizo full_name: Mori, Taizo last_name: Mori - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow - first_name: Torsten full_name: Hegmann, Torsten last_name: Hegmann citation: ama: 'Sharma A, Urbanski M, Mori T, Kitzerow H-S, Hegmann T. Metallic and semiconducting nanoparticles in LCs. In: Series in Soft Condensed Matter. WORLD SCIENTIFIC; 2016. doi:10.1142/9789814619264_0014' apa: Sharma, A., Urbanski, M., Mori, T., Kitzerow, H.-S., & Hegmann, T. (2016). Metallic and semiconducting nanoparticles in LCs. In Series in Soft Condensed Matter. WORLD SCIENTIFIC. https://doi.org/10.1142/9789814619264_0014 bibtex: '@inbook{Sharma_Urbanski_Mori_Kitzerow_Hegmann_2016, title={Metallic and semiconducting nanoparticles in LCs}, DOI={10.1142/9789814619264_0014}, booktitle={Series in Soft Condensed Matter}, publisher={WORLD SCIENTIFIC}, author={Sharma, Anshul and Urbanski, Martin and Mori, Taizo and Kitzerow, Heinz-Siegfried and Hegmann, Torsten}, year={2016} }' chicago: Sharma, Anshul, Martin Urbanski, Taizo Mori, Heinz-Siegfried Kitzerow, and Torsten Hegmann. “Metallic and Semiconducting Nanoparticles in LCs.” In Series in Soft Condensed Matter. WORLD SCIENTIFIC, 2016. https://doi.org/10.1142/9789814619264_0014. ieee: A. Sharma, M. Urbanski, T. Mori, H.-S. Kitzerow, and T. Hegmann, “Metallic and semiconducting nanoparticles in LCs,” in Series in Soft Condensed Matter, WORLD SCIENTIFIC, 2016. mla: Sharma, Anshul, et al. “Metallic and Semiconducting Nanoparticles in LCs.” Series in Soft Condensed Matter, WORLD SCIENTIFIC, 2016, doi:10.1142/9789814619264_0014. short: 'A. Sharma, M. Urbanski, T. Mori, H.-S. Kitzerow, T. Hegmann, in: Series in Soft Condensed Matter, WORLD SCIENTIFIC, 2016.' date_created: 2023-01-24T17:46:12Z date_updated: 2023-01-24T17:46:56Z department: - _id: '313' - _id: '230' - _id: '638' doi: 10.1142/9789814619264_0014 language: - iso: eng publication: Series in Soft Condensed Matter publication_identifier: issn: - 1793-1479 publication_status: published publisher: WORLD SCIENTIFIC status: public title: Metallic and semiconducting nanoparticles in LCs type: book_chapter user_id: '254' year: '2016' ... --- _id: '39686' author: - first_name: Bingru full_name: Zhang, Bingru last_name: Zhang - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: 'Zhang B, Kitzerow H-S. Influence of Proton and Salt Concentration on the Chromonic Liquid Crystal Phase Diagram of Disodium Cromoglycate Solutions: Prospects and Limitations of a Host for DNA Nanostructures. The Journal of Physical Chemistry B. 2016;120(12):3250-3256. doi:10.1021/acs.jpcb.6b01644' apa: 'Zhang, B., & Kitzerow, H.-S. (2016). Influence of Proton and Salt Concentration on the Chromonic Liquid Crystal Phase Diagram of Disodium Cromoglycate Solutions: Prospects and Limitations of a Host for DNA Nanostructures. The Journal of Physical Chemistry B, 120(12), 3250–3256. https://doi.org/10.1021/acs.jpcb.6b01644' bibtex: '@article{Zhang_Kitzerow_2016, title={Influence of Proton and Salt Concentration on the Chromonic Liquid Crystal Phase Diagram of Disodium Cromoglycate Solutions: Prospects and Limitations of a Host for DNA Nanostructures}, volume={120}, DOI={10.1021/acs.jpcb.6b01644}, number={12}, journal={The Journal of Physical Chemistry B}, publisher={American Chemical Society (ACS)}, author={Zhang, Bingru and Kitzerow, Heinz-Siegfried}, year={2016}, pages={3250–3256} }' chicago: 'Zhang, Bingru, and Heinz-Siegfried Kitzerow. “Influence of Proton and Salt Concentration on the Chromonic Liquid Crystal Phase Diagram of Disodium Cromoglycate Solutions: Prospects and Limitations of a Host for DNA Nanostructures.” The Journal of Physical Chemistry B 120, no. 12 (2016): 3250–56. https://doi.org/10.1021/acs.jpcb.6b01644.' ieee: 'B. Zhang and H.-S. Kitzerow, “Influence of Proton and Salt Concentration on the Chromonic Liquid Crystal Phase Diagram of Disodium Cromoglycate Solutions: Prospects and Limitations of a Host for DNA Nanostructures,” The Journal of Physical Chemistry B, vol. 120, no. 12, pp. 3250–3256, 2016, doi: 10.1021/acs.jpcb.6b01644.' mla: 'Zhang, Bingru, and Heinz-Siegfried Kitzerow. “Influence of Proton and Salt Concentration on the Chromonic Liquid Crystal Phase Diagram of Disodium Cromoglycate Solutions: Prospects and Limitations of a Host for DNA Nanostructures.” The Journal of Physical Chemistry B, vol. 120, no. 12, American Chemical Society (ACS), 2016, pp. 3250–56, doi:10.1021/acs.jpcb.6b01644.' short: B. Zhang, H.-S. Kitzerow, The Journal of Physical Chemistry B 120 (2016) 3250–3256. date_created: 2023-01-24T18:10:05Z date_updated: 2023-01-24T18:10:33Z department: - _id: '313' - _id: '230' - _id: '638' doi: 10.1021/acs.jpcb.6b01644 intvolume: ' 120' issue: '12' keyword: - Materials Chemistry - Surfaces - Coatings and Films - Physical and Theoretical Chemistry language: - iso: eng page: 3250-3256 publication: The Journal of Physical Chemistry B publication_identifier: issn: - 1520-6106 - 1520-5207 publication_status: published publisher: American Chemical Society (ACS) status: public title: 'Influence of Proton and Salt Concentration on the Chromonic Liquid Crystal Phase Diagram of Disodium Cromoglycate Solutions: Prospects and Limitations of a Host for DNA Nanostructures' type: journal_article user_id: '254' volume: 120 year: '2016' ... --- _id: '39685' author: - first_name: Kevin full_name: Martens, Kevin last_name: Martens - first_name: Timon full_name: Funck, Timon last_name: Funck - first_name: Susanne full_name: Kempter, Susanne last_name: Kempter - first_name: Eva-Maria full_name: Roller, Eva-Maria last_name: Roller - first_name: Tim full_name: Liedl, Tim last_name: Liedl - first_name: Benno M. full_name: Blaschke, Benno M. last_name: Blaschke - first_name: Peter full_name: Knecht, Peter last_name: Knecht - first_name: José Antonio full_name: Garrido, José Antonio last_name: Garrido - first_name: Bingru full_name: Zhang, Bingru last_name: Zhang - first_name: Heinz-Siegfried full_name: Kitzerow, Heinz-Siegfried id: '254' last_name: Kitzerow citation: ama: Martens K, Funck T, Kempter S, et al. Alignment and Graphene-Assisted Decoration of Lyotropic Chromonic Liquid Crystals Containing DNA Origami Nanostructures. Small. 2016;12(12):1658-1666. doi:10.1002/smll.201503382 apa: Martens, K., Funck, T., Kempter, S., Roller, E.-M., Liedl, T., Blaschke, B. M., Knecht, P., Garrido, J. A., Zhang, B., & Kitzerow, H.-S. (2016). Alignment and Graphene-Assisted Decoration of Lyotropic Chromonic Liquid Crystals Containing DNA Origami Nanostructures. Small, 12(12), 1658–1666. https://doi.org/10.1002/smll.201503382 bibtex: '@article{Martens_Funck_Kempter_Roller_Liedl_Blaschke_Knecht_Garrido_Zhang_Kitzerow_2016, title={Alignment and Graphene-Assisted Decoration of Lyotropic Chromonic Liquid Crystals Containing DNA Origami Nanostructures}, volume={12}, DOI={10.1002/smll.201503382}, number={12}, journal={Small}, publisher={Wiley}, author={Martens, Kevin and Funck, Timon and Kempter, Susanne and Roller, Eva-Maria and Liedl, Tim and Blaschke, Benno M. and Knecht, Peter and Garrido, José Antonio and Zhang, Bingru and Kitzerow, Heinz-Siegfried}, year={2016}, pages={1658–1666} }' chicago: 'Martens, Kevin, Timon Funck, Susanne Kempter, Eva-Maria Roller, Tim Liedl, Benno M. Blaschke, Peter Knecht, José Antonio Garrido, Bingru Zhang, and Heinz-Siegfried Kitzerow. “Alignment and Graphene-Assisted Decoration of Lyotropic Chromonic Liquid Crystals Containing DNA Origami Nanostructures.” Small 12, no. 12 (2016): 1658–66. https://doi.org/10.1002/smll.201503382.' ieee: 'K. Martens et al., “Alignment and Graphene-Assisted Decoration of Lyotropic Chromonic Liquid Crystals Containing DNA Origami Nanostructures,” Small, vol. 12, no. 12, pp. 1658–1666, 2016, doi: 10.1002/smll.201503382.' mla: Martens, Kevin, et al. “Alignment and Graphene-Assisted Decoration of Lyotropic Chromonic Liquid Crystals Containing DNA Origami Nanostructures.” Small, vol. 12, no. 12, Wiley, 2016, pp. 1658–66, doi:10.1002/smll.201503382. short: K. Martens, T. Funck, S. Kempter, E.-M. Roller, T. Liedl, B.M. Blaschke, P. Knecht, J.A. Garrido, B. Zhang, H.-S. Kitzerow, Small 12 (2016) 1658–1666. date_created: 2023-01-24T18:09:03Z date_updated: 2023-01-24T18:09:38Z department: - _id: '313' - _id: '230' - _id: '638' doi: 10.1002/smll.201503382 intvolume: ' 12' issue: '12' keyword: - Biomaterials - Biotechnology - General Materials Science - General Chemistry language: - iso: eng page: 1658-1666 publication: Small publication_identifier: issn: - 1613-6810 publication_status: published publisher: Wiley status: public title: Alignment and Graphene-Assisted Decoration of Lyotropic Chromonic Liquid Crystals Containing DNA Origami Nanostructures type: journal_article user_id: '254' volume: 12 year: '2016' ... --- _id: '13917' abstract: - lang: eng text: We present the synthesis of indium oxide (In2O3) inverse opal films with photonic stop bands in the visible range by a structure replication method. Artificial opal films made of poly(methyl methacrylate) (PMMA) spheres are utilized as template. The opal films are deposited via sedimentation facilitated by ultrasonication, and then impregnated by indium nitrate solution, which is thermally converted to In2O3 after drying. The quality of the resulting inverse opal film depends on many parameters; in this study the water content of the indium nitrate/PMMA composite after drying is investigated. Comparison of the reflectance spectra recorded by vis-spectroscopy with simulated data shows a good agreement between the peak position and calculated stop band positions for the inverse opals. This synthesis is less complex and highly efficient compared to most other techniques and is suitable for use in many applications. author: - first_name: Sabrina full_name: Amrehn, Sabrina last_name: Amrehn - first_name: Daniel full_name: Berghoff, Daniel id: '38175' last_name: Berghoff - first_name: Andreas full_name: Nikitin, Andreas last_name: Nikitin - first_name: Matthias full_name: Reichelt, Matthias id: '138' last_name: Reichelt - first_name: Xia full_name: Wu, Xia last_name: Wu - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: Thorsten full_name: Wagner, Thorsten last_name: Wagner citation: ama: Amrehn S, Berghoff D, Nikitin A, et al. Indium oxide inverse opal films synthesized by structure replication method. Photonics and Nanostructures - Fundamentals and Applications. 2016;19:55-63. doi:10.1016/j.photonics.2016.02.005 apa: Amrehn, S., Berghoff, D., Nikitin, A., Reichelt, M., Wu, X., Meier, T., & Wagner, T. (2016). Indium oxide inverse opal films synthesized by structure replication method. Photonics and Nanostructures - Fundamentals and Applications, 19, 55–63. https://doi.org/10.1016/j.photonics.2016.02.005 bibtex: '@article{Amrehn_Berghoff_Nikitin_Reichelt_Wu_Meier_Wagner_2016, title={Indium oxide inverse opal films synthesized by structure replication method}, volume={19}, DOI={10.1016/j.photonics.2016.02.005}, journal={Photonics and Nanostructures - Fundamentals and Applications}, author={Amrehn, Sabrina and Berghoff, Daniel and Nikitin, Andreas and Reichelt, Matthias and Wu, Xia and Meier, Torsten and Wagner, Thorsten}, year={2016}, pages={55–63} }' chicago: 'Amrehn, Sabrina, Daniel Berghoff, Andreas Nikitin, Matthias Reichelt, Xia Wu, Torsten Meier, and Thorsten Wagner. “Indium Oxide Inverse Opal Films Synthesized by Structure Replication Method.” Photonics and Nanostructures - Fundamentals and Applications 19 (2016): 55–63. https://doi.org/10.1016/j.photonics.2016.02.005.' ieee: 'S. Amrehn et al., “Indium oxide inverse opal films synthesized by structure replication method,” Photonics and Nanostructures - Fundamentals and Applications, vol. 19, pp. 55–63, 2016, doi: 10.1016/j.photonics.2016.02.005.' mla: Amrehn, Sabrina, et al. “Indium Oxide Inverse Opal Films Synthesized by Structure Replication Method.” Photonics and Nanostructures - Fundamentals and Applications, vol. 19, 2016, pp. 55–63, doi:10.1016/j.photonics.2016.02.005. short: S. Amrehn, D. Berghoff, A. Nikitin, M. Reichelt, X. Wu, T. Meier, T. Wagner, Photonics and Nanostructures - Fundamentals and Applications 19 (2016) 55–63. date_created: 2019-10-18T08:31:34Z date_updated: 2023-04-16T21:20:25Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '2' - _id: '308' - _id: '230' doi: 10.1016/j.photonics.2016.02.005 funded_apc: '1' intvolume: ' 19' language: - iso: eng page: 55-63 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Photonics and Nanostructures - Fundamentals and Applications publication_identifier: issn: - 1569-4410 publication_status: published status: public title: Indium oxide inverse opal films synthesized by structure replication method type: journal_article user_id: '49063' volume: 19 year: '2016' ... --- _id: '13915' abstract: - lang: eng text: "The dynamics of a pair of harmonic oscillators represented by three-dimensional fields coupled with a repulsive cubic nonlinearity is investigated through direct simulations of the respective field equations and with the help of the finite-mode Galerkin approximation (GA), which represents the two interacting fields by a superposition of \r\n3+3 harmonic-oscillator p-wave eigenfunctions with orbital and magnetic quantum numbers l=1 and m=1, 0, −1. The system can be implemented in binary Bose-Einstein condensates, demonstrating the potential of the atomic condensates to emulate various complex modes predicted by classical field theories. First, the GA very accurately predicts a broadly degenerate set of the system's ground states in the p-wave manifold, in the form of complexes built of a dipole coaxial with another dipole or vortex, as well as complexes built of mutually orthogonal dipoles. Next, pairs of noncoaxial vortices and/or dipoles, including pairs of mutually perpendicular vortices, develop remarkably stable dynamical regimes, which feature periodic exchange of the angular momentum and periodic switching between dipoles and vortices. For a moderately strong nonlinearity, simulations of the coupled-field equations agree very well with results produced by the GA, demonstrating that the dynamics is accurately spanned by the set of six modes limited to l=1." author: - first_name: R. full_name: Driben, R. last_name: Driben - first_name: V. V. full_name: Konotop, V. V. last_name: Konotop - first_name: B. A. full_name: Malomed, B. A. last_name: Malomed - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 citation: ama: Driben R, Konotop VV, Malomed BA, Meier T. Dynamics of dipoles and vortices in nonlinearly coupled three-dimensional field oscillators. Physical Review E. 2016;94(1). doi:10.1103/physreve.94.012207 apa: Driben, R., Konotop, V. V., Malomed, B. A., & Meier, T. (2016). Dynamics of dipoles and vortices in nonlinearly coupled three-dimensional field oscillators. Physical Review E, 94(1). https://doi.org/10.1103/physreve.94.012207 bibtex: '@article{Driben_Konotop_Malomed_Meier_2016, title={Dynamics of dipoles and vortices in nonlinearly coupled three-dimensional field oscillators}, volume={94}, DOI={10.1103/physreve.94.012207}, number={1}, journal={Physical Review E}, author={Driben, R. and Konotop, V. V. and Malomed, B. A. and Meier, Torsten}, year={2016} }' chicago: Driben, R., V. V. Konotop, B. A. Malomed, and Torsten Meier. “Dynamics of Dipoles and Vortices in Nonlinearly Coupled Three-Dimensional Field Oscillators.” Physical Review E 94, no. 1 (2016). https://doi.org/10.1103/physreve.94.012207. ieee: 'R. Driben, V. V. Konotop, B. A. Malomed, and T. Meier, “Dynamics of dipoles and vortices in nonlinearly coupled three-dimensional field oscillators,” Physical Review E, vol. 94, no. 1, 2016, doi: 10.1103/physreve.94.012207.' mla: Driben, R., et al. “Dynamics of Dipoles and Vortices in Nonlinearly Coupled Three-Dimensional Field Oscillators.” Physical Review E, vol. 94, no. 1, 2016, doi:10.1103/physreve.94.012207. short: R. Driben, V.V. Konotop, B.A. Malomed, T. Meier, Physical Review E 94 (2016). date_created: 2019-10-18T08:29:20Z date_updated: 2023-04-16T21:19:43Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '230' doi: 10.1103/physreve.94.012207 funded_apc: '1' intvolume: ' 94' issue: '1' language: - iso: eng publication: Physical Review E publication_identifier: issn: - 2470-0045 - 2470-0053 publication_status: published status: public title: Dynamics of dipoles and vortices in nonlinearly coupled three-dimensional field oscillators type: journal_article user_id: '49063' volume: 94 year: '2016' ... --- _id: '13918' article_number: 97460W author: - first_name: Reinold full_name: Podzimski, Reinold last_name: Podzimski - first_name: Huynh Thanh full_name: Duc, Huynh Thanh last_name: Duc - first_name: Shekhar full_name: Priyadarshi, Shekhar last_name: Priyadarshi - first_name: Christian full_name: Schmidt, Christian last_name: Schmidt - first_name: Mark full_name: Bieler, Mark last_name: Bieler - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 citation: ama: 'Podzimski R, Duc HT, Priyadarshi S, Schmidt C, Bieler M, Meier T. Photocurrents in semiconductors and semiconductor quantum wells analyzed by k.p-based Bloch equations. In: Betz M, Elezzabi AY, eds. Ultrafast Phenomena and Nanophotonics XX. Vol 9746. SPIE Proceedings. SPIE; 2016. doi:10.1117/12.2208572' apa: Podzimski, R., Duc, H. T., Priyadarshi, S., Schmidt, C., Bieler, M., & Meier, T. (2016). Photocurrents in semiconductors and semiconductor quantum wells analyzed by k.p-based Bloch equations. In M. Betz & A. Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XX (No. 97460W; Vol. 9746). SPIE. https://doi.org/10.1117/12.2208572 bibtex: '@inproceedings{Podzimski_Duc_Priyadarshi_Schmidt_Bieler_Meier_2016, series={SPIE Proceedings}, title={Photocurrents in semiconductors and semiconductor quantum wells analyzed by k.p-based Bloch equations}, volume={9746}, DOI={10.1117/12.2208572}, number={97460W}, booktitle={Ultrafast Phenomena and Nanophotonics XX}, publisher={SPIE}, author={Podzimski, Reinold and Duc, Huynh Thanh and Priyadarshi, Shekhar and Schmidt, Christian and Bieler, Mark and Meier, Torsten}, editor={Betz, Markus and Elezzabi, Abdulhakem Y.}, year={2016}, collection={SPIE Proceedings} }' chicago: Podzimski, Reinold, Huynh Thanh Duc, Shekhar Priyadarshi, Christian Schmidt, Mark Bieler, and Torsten Meier. “Photocurrents in Semiconductors and Semiconductor Quantum Wells Analyzed by k.p-Based Bloch Equations.” In Ultrafast Phenomena and Nanophotonics XX, edited by Markus Betz and Abdulhakem Y. Elezzabi, Vol. 9746. SPIE Proceedings. SPIE, 2016. https://doi.org/10.1117/12.2208572. ieee: 'R. Podzimski, H. T. Duc, S. Priyadarshi, C. Schmidt, M. Bieler, and T. Meier, “Photocurrents in semiconductors and semiconductor quantum wells analyzed by k.p-based Bloch equations,” in Ultrafast Phenomena and Nanophotonics XX, 2016, vol. 9746, doi: 10.1117/12.2208572.' mla: Podzimski, Reinold, et al. “Photocurrents in Semiconductors and Semiconductor Quantum Wells Analyzed by k.p-Based Bloch Equations.” Ultrafast Phenomena and Nanophotonics XX, edited by Markus Betz and Abdulhakem Y. Elezzabi, vol. 9746, 97460W, SPIE, 2016, doi:10.1117/12.2208572. short: 'R. Podzimski, H.T. Duc, S. Priyadarshi, C. Schmidt, M. Bieler, T. Meier, in: M. Betz, A.Y. Elezzabi (Eds.), Ultrafast Phenomena and Nanophotonics XX, SPIE, 2016.' date_created: 2019-10-18T08:33:43Z date_updated: 2023-04-16T21:21:21Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '230' doi: 10.1117/12.2208572 editor: - first_name: Markus full_name: Betz, Markus last_name: Betz - first_name: Abdulhakem Y. full_name: Elezzabi, Abdulhakem Y. last_name: Elezzabi intvolume: ' 9746' language: - iso: eng project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Ultrafast Phenomena and Nanophotonics XX publication_status: published publisher: SPIE series_title: SPIE Proceedings status: public title: Photocurrents in semiconductors and semiconductor quantum wells analyzed by k.p-based Bloch equations type: conference user_id: '49063' volume: 9746 year: '2016' ... --- _id: '22942' abstract: - lang: eng text: "A microscopic approach that is based on the multisubband semiconductor Bloch equations formulated in the basis of a 14-band k⋅p model is employed to compute the temporal dynamics of photocurrents in GaAs quantum wells following excitation with femtosecond laser pulses. This approach provides a transparent description of the interband, intersubband, and intraband excitations, fully includes all resonant as well as off-resonant excitations, and treats the light-matter interaction nonperturbatively. For linearly polarized excitations, the photocurrents contain contributions from shift and rectification currents. We numerically compute and analyze these currents generated by excitation with femtosecond laser pulses for [110]- and [111]-oriented GaAs quantum wells. It is shown that the often employed perturbative \r\nχ(2) approach breaks down for peak fields larger than about 10 kV/cm, and that nonperturbative effects lead to a reduction of the peak values of the shift and rectification currents and to temporal oscillations that originate from Rabi flopping. In particular, we find a complex oscillatory photon energy dependence of the magnitudes of the shift and rectification currents. Our simulations demonstrate that this dependence is the result of mixing between the heavy- and light-hole valence bands. This is a surprising finding since the band mixing has an even larger influence on the strength of the photocurrents than the absorption coefficient. For [110]-oriented GaAs quantum wells, the calculated photon energy dependence is compared to experimental results, and good agreement is obtained. This validates our theoretical approach." article_number: '085305' author: - first_name: Huynh Thanh full_name: Duc, Huynh Thanh last_name: Duc - first_name: Reinold full_name: Podzimski, Reinold last_name: Podzimski - first_name: Shekhar full_name: Priyadarshi, Shekhar last_name: Priyadarshi - first_name: Mark full_name: Bieler, Mark last_name: Bieler - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 citation: ama: 'Duc HT, Podzimski R, Priyadarshi S, Bieler M, Meier T. Ultrafast shift and rectification photocurrents in GaAs quantum wells: Excitation intensity dependence and the importance of band mixing. Physical Review B. 2016;94(8). doi:10.1103/physrevb.94.085305' apa: 'Duc, H. T., Podzimski, R., Priyadarshi, S., Bieler, M., & Meier, T. (2016). Ultrafast shift and rectification photocurrents in GaAs quantum wells: Excitation intensity dependence and the importance of band mixing. Physical Review B, 94(8), Article 085305. https://doi.org/10.1103/physrevb.94.085305' bibtex: '@article{Duc_Podzimski_Priyadarshi_Bieler_Meier_2016, title={Ultrafast shift and rectification photocurrents in GaAs quantum wells: Excitation intensity dependence and the importance of band mixing}, volume={94}, DOI={10.1103/physrevb.94.085305}, number={8085305}, journal={Physical Review B}, publisher={American Physical Society}, author={Duc, Huynh Thanh and Podzimski, Reinold and Priyadarshi, Shekhar and Bieler, Mark and Meier, Torsten}, year={2016} }' chicago: 'Duc, Huynh Thanh, Reinold Podzimski, Shekhar Priyadarshi, Mark Bieler, and Torsten Meier. “Ultrafast Shift and Rectification Photocurrents in GaAs Quantum Wells: Excitation Intensity Dependence and the Importance of Band Mixing.” Physical Review B 94, no. 8 (2016). https://doi.org/10.1103/physrevb.94.085305.' ieee: 'H. T. Duc, R. Podzimski, S. Priyadarshi, M. Bieler, and T. Meier, “Ultrafast shift and rectification photocurrents in GaAs quantum wells: Excitation intensity dependence and the importance of band mixing,” Physical Review B, vol. 94, no. 8, Art. no. 085305, 2016, doi: 10.1103/physrevb.94.085305.' mla: 'Duc, Huynh Thanh, et al. “Ultrafast Shift and Rectification Photocurrents in GaAs Quantum Wells: Excitation Intensity Dependence and the Importance of Band Mixing.” Physical Review B, vol. 94, no. 8, 085305, American Physical Society, 2016, doi:10.1103/physrevb.94.085305.' short: H.T. Duc, R. Podzimski, S. Priyadarshi, M. Bieler, T. Meier, Physical Review B 94 (2016). date_created: 2021-08-06T08:41:28Z date_updated: 2023-04-16T21:18:16Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '230' doi: 10.1103/physrevb.94.085305 intvolume: ' 94' issue: '8' language: - iso: eng project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Physical Review B publication_identifier: issn: - 2469-9950 - 2469-9969 publication_status: published publisher: American Physical Society status: public title: 'Ultrafast shift and rectification photocurrents in GaAs quantum wells: Excitation intensity dependence and the importance of band mixing' type: journal_article user_id: '49063' volume: 94 year: '2016' ... --- _id: '13916' abstract: - lang: eng text: Nonlinearity is the driving force for numerous important effects in nature typically showing transitions between different regimes, regular, chaotic or catastrophic behavior. Localized nonlinear modes have been the focus of intense research in areas such as fluid and gas dynamics, photonics, atomic and solid state physics etc. Due to the richness of the behavior of nonlinear systems and due to the severe numerical demands of accurate three-dimensional (3D) numerical simulations presently only little knowledge is available on the dynamics of complex nonlinear modes in 3D. Here, we investigate the dynamics of 3D non-coaxial matter wave vortices that are trapped in a parabolic potential and interact via a repulsive nonlinearity. Our numerical simulations demonstrate the existence of an unexpected and fascinating nonlinear regime that starts immediately when the nonlinearity is switched-on and is characterized by a smooth dynamics representing torque-free precession with nutations. The reported motion is proven to be robust regarding various effects such as the number of particles, dissipation and trap deformations and thus should be observable in suitably designed experiments. Since our theoretical approach, i.e., coupled nonlinear Schrödinger equations, is quite generic, we expect that the obtained novel dynamical behavior should also exist in other nonlinear systems. article_number: '22758' author: - first_name: R. full_name: Driben, R. last_name: Driben - first_name: V. V. full_name: Konotop, V. V. last_name: Konotop - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 citation: ama: Driben R, Konotop VV, Meier T. Precession and nutation dynamics of nonlinearly coupled non-coaxial three-dimensional matter wave vortices. Scientific Reports. 2016;6. doi:10.1038/srep22758 apa: Driben, R., Konotop, V. V., & Meier, T. (2016). Precession and nutation dynamics of nonlinearly coupled non-coaxial three-dimensional matter wave vortices. Scientific Reports, 6, Article 22758. https://doi.org/10.1038/srep22758 bibtex: '@article{Driben_Konotop_Meier_2016, title={Precession and nutation dynamics of nonlinearly coupled non-coaxial three-dimensional matter wave vortices}, volume={6}, DOI={10.1038/srep22758}, number={22758}, journal={Scientific Reports}, author={Driben, R. and Konotop, V. V. and Meier, Torsten}, year={2016} }' chicago: Driben, R., V. V. Konotop, and Torsten Meier. “Precession and Nutation Dynamics of Nonlinearly Coupled Non-Coaxial Three-Dimensional Matter Wave Vortices.” Scientific Reports 6 (2016). https://doi.org/10.1038/srep22758. ieee: 'R. Driben, V. V. Konotop, and T. Meier, “Precession and nutation dynamics of nonlinearly coupled non-coaxial three-dimensional matter wave vortices,” Scientific Reports, vol. 6, Art. no. 22758, 2016, doi: 10.1038/srep22758.' mla: Driben, R., et al. “Precession and Nutation Dynamics of Nonlinearly Coupled Non-Coaxial Three-Dimensional Matter Wave Vortices.” Scientific Reports, vol. 6, 22758, 2016, doi:10.1038/srep22758. short: R. Driben, V.V. Konotop, T. Meier, Scientific Reports 6 (2016). date_created: 2019-10-18T08:30:23Z date_updated: 2023-04-16T21:22:52Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '230' doi: 10.1038/srep22758 funded_apc: '1' intvolume: ' 6' language: - iso: eng main_file_link: - open_access: '1' url: https://www.nature.com/articles/srep22758 oa: '1' publication: Scientific Reports publication_identifier: issn: - 2045-2322 publication_status: published status: public title: Precession and nutation dynamics of nonlinearly coupled non-coaxial three-dimensional matter wave vortices type: journal_article user_id: '49063' volume: 6 year: '2016' ... --- _id: '13920' abstract: - lang: eng text: We investigate the transient optical response in high-quality Cd0.88Zn0.12Te crystals in the regime of slow light propagation on the lower exciton-polariton branch. Femtosecond photoexcitation leads to very substantial transmission changes in a ∼10-meV broad spectral range within the transparency window of the unexcited semiconductor. These nonlinear optical signatures decay on picosecond time scales governed by carrier thermalization and recombination. The temporal and spectral dependence indicate the dynamical optical response as arising from excitation-induced dephasing and perturbed free induction decay. Model simulations for the optical response taking into account the actual exciton-polariton dispersion and excitation-induced dephasing of a nonlinearly driven two-level system support this interpretation. author: - first_name: J. full_name: Lohrenz, J. last_name: Lohrenz - first_name: S. full_name: Melzer, S. last_name: Melzer - first_name: C. full_name: Ruppert, C. last_name: Ruppert - first_name: I. A. full_name: Akimov, I. A. last_name: Akimov - first_name: H. full_name: Mariette, H. last_name: Mariette - first_name: Matthias full_name: Reichelt, Matthias id: '138' last_name: Reichelt - first_name: Alexander full_name: Trautmann, Alexander id: '38163' last_name: Trautmann - first_name: Torsten full_name: Meier, Torsten id: '344' last_name: Meier orcid: 0000-0001-8864-2072 - first_name: M. full_name: Betz, M. last_name: Betz citation: ama: Lohrenz J, Melzer S, Ruppert C, et al. Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe. Physical Review B. 2016;93(7). doi:10.1103/physrevb.93.075201 apa: Lohrenz, J., Melzer, S., Ruppert, C., Akimov, I. A., Mariette, H., Reichelt, M., Trautmann, A., Meier, T., & Betz, M. (2016). Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe. Physical Review B, 93(7). https://doi.org/10.1103/physrevb.93.075201 bibtex: '@article{Lohrenz_Melzer_Ruppert_Akimov_Mariette_Reichelt_Trautmann_Meier_Betz_2016, title={Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe}, volume={93}, DOI={10.1103/physrevb.93.075201}, number={7}, journal={Physical Review B}, author={Lohrenz, J. and Melzer, S. and Ruppert, C. and Akimov, I. A. and Mariette, H. and Reichelt, Matthias and Trautmann, Alexander and Meier, Torsten and Betz, M.}, year={2016} }' chicago: Lohrenz, J., S. Melzer, C. Ruppert, I. A. Akimov, H. Mariette, Matthias Reichelt, Alexander Trautmann, Torsten Meier, and M. Betz. “Ultrafast Dynamical Response of the Lower Exciton-Polariton Branch in CdZnTe.” Physical Review B 93, no. 7 (2016). https://doi.org/10.1103/physrevb.93.075201. ieee: 'J. Lohrenz et al., “Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe,” Physical Review B, vol. 93, no. 7, 2016, doi: 10.1103/physrevb.93.075201.' mla: Lohrenz, J., et al. “Ultrafast Dynamical Response of the Lower Exciton-Polariton Branch in CdZnTe.” Physical Review B, vol. 93, no. 7, 2016, doi:10.1103/physrevb.93.075201. short: J. Lohrenz, S. Melzer, C. Ruppert, I.A. Akimov, H. Mariette, M. Reichelt, A. Trautmann, T. Meier, M. Betz, Physical Review B 93 (2016). date_created: 2019-10-18T08:38:50Z date_updated: 2023-04-16T21:23:54Z department: - _id: '15' - _id: '170' - _id: '293' - _id: '230' - _id: '429' doi: 10.1103/physrevb.93.075201 funded_apc: '1' intvolume: ' 93' issue: '7' language: - iso: eng project: - _id: '53' name: TRR 142 - _id: '54' name: TRR 142 - Project Area A - _id: '59' name: TRR 142 - Subproject A2 - _id: '64' name: TRR 142 - Subproject A7 - _id: '56' name: TRR 142 - Project Area C - _id: '72' name: TRR 142 - Subproject C2 - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '52' name: 'PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing' publication: Physical Review B publication_identifier: issn: - 2469-9950 - 2469-9969 publication_status: published status: public title: Ultrafast dynamical response of the lower exciton-polariton branch in CdZnTe type: journal_article user_id: '49063' volume: 93 year: '2016' ... --- _id: '10024' abstract: - lang: eng text: The influence of electronic many-body interactions, spin-orbit coupling, and thermal lattice vibrations on the electronic structure of lithium niobate is calculated from first principles. Self-energy calculations in the GW approximation show that the inclusion of self-consistency in the Green function G and the screened Coulomb potential W opens the band gap far stronger than found in previous G0W0 calculations but slightly overestimates its actual value due to the neglect of excitonic effects in W. A realistic frozen-lattice band gap of about 5.9 eV is obtained by combining hybrid density functional theory with the QSGW0 scheme. The renormalization of the band gap due to electron-phonon coupling, derived here using molecular dynamics as well as density functional perturbation theory, reduces this value by about 0.5 eV at room temperature. Spin-orbit coupling does not noticeably modify the fundamental gap but gives rise to a Rashba-like spin texture in the conduction band. article_number: '075205' article_type: original author: - first_name: Arthur full_name: Riefer, Arthur last_name: Riefer - first_name: Michael full_name: Friedrich, Michael last_name: Friedrich - 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 - first_name: Arno full_name: Schindlmayr, Arno id: '458' last_name: Schindlmayr orcid: 0000-0002-4855-071X - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 citation: ama: 'Riefer A, Friedrich M, Sanna S, Gerstmann U, Schindlmayr A, Schmidt WG. LiNbO3 electronic structure: Many-body interactions, spin-orbit coupling, and thermal effects. Physical Review B. 2016;93(7). doi:10.1103/PhysRevB.93.075205' apa: 'Riefer, A., Friedrich, M., Sanna, S., Gerstmann, U., Schindlmayr, A., & Schmidt, W. G. (2016). LiNbO3 electronic structure: Many-body interactions, spin-orbit coupling, and thermal effects. Physical Review B, 93(7), Article 075205. https://doi.org/10.1103/PhysRevB.93.075205' bibtex: '@article{Riefer_Friedrich_Sanna_Gerstmann_Schindlmayr_Schmidt_2016, title={LiNbO3 electronic structure: Many-body interactions, spin-orbit coupling, and thermal effects}, volume={93}, DOI={10.1103/PhysRevB.93.075205}, number={7075205}, journal={Physical Review B}, publisher={American Physical Society}, author={Riefer, Arthur and Friedrich, Michael and Sanna, Simone and Gerstmann, Uwe and Schindlmayr, Arno and Schmidt, Wolf Gero}, year={2016} }' chicago: 'Riefer, Arthur, Michael Friedrich, Simone Sanna, Uwe Gerstmann, Arno Schindlmayr, and Wolf Gero Schmidt. “LiNbO3 Electronic Structure: Many-Body Interactions, Spin-Orbit Coupling, and Thermal Effects.” Physical Review B 93, no. 7 (2016). https://doi.org/10.1103/PhysRevB.93.075205.' ieee: 'A. Riefer, M. Friedrich, S. Sanna, U. Gerstmann, A. Schindlmayr, and W. G. Schmidt, “LiNbO3 electronic structure: Many-body interactions, spin-orbit coupling, and thermal effects,” Physical Review B, vol. 93, no. 7, Art. no. 075205, 2016, doi: 10.1103/PhysRevB.93.075205.' mla: 'Riefer, Arthur, et al. “LiNbO3 Electronic Structure: Many-Body Interactions, Spin-Orbit Coupling, and Thermal Effects.” Physical Review B, vol. 93, no. 7, 075205, American Physical Society, 2016, doi:10.1103/PhysRevB.93.075205.' short: A. Riefer, M. Friedrich, S. Sanna, U. Gerstmann, A. Schindlmayr, W.G. Schmidt, Physical Review B 93 (2016). date_created: 2019-05-29T07:50:59Z date_updated: 2025-12-05T09:59:57Z ddc: - '530' department: - _id: '295' - _id: '296' - _id: '230' - _id: '429' - _id: '790' - _id: '15' - _id: '35' - _id: '27' doi: 10.1103/PhysRevB.93.075205 external_id: isi: - '000370794800004' file: - access_level: open_access content_type: application/pdf creator: schindlm date_created: 2020-08-27T20:36:43Z date_updated: 2020-08-30T14:39:23Z description: © 2016 American Physical Society file_id: '18469' file_name: PhysRevB.93.075205.pdf file_size: 1314637 relation: main_file title: 'LiNbO3 electronic structure: Many-body interactions, spin-orbit coupling, and thermal effects' file_date_updated: 2020-08-30T14:39:23Z has_accepted_license: '1' intvolume: ' 93' isi: '1' issue: '7' language: - iso: eng oa: '1' project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '53' name: TRR 142 - _id: '55' name: TRR 142 - Project Area B - _id: '69' name: TRR 142 - Subproject B4 - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Physical Review B publication_identifier: eissn: - 2469-9969 issn: - 2469-9950 publication_status: published publisher: American Physical Society quality_controlled: '1' status: public title: 'LiNbO3 electronic structure: Many-body interactions, spin-orbit coupling, and thermal effects' type: journal_article user_id: '16199' volume: 93 year: '2016' ... --- _id: '10025' abstract: - lang: eng text: The phonon dispersions of the ferro‐ and paraelectric phase of LiTaO3 are calculated within density‐functional perturbation theory. The longitudinal optical phonon modes are theoretically derived and compared with available experimental data. Our results confirm the recent phonon assignment proposed by Margueron et al. [J. Appl. Phys. 111, 104105 (2012)] on the basis of spectroscopical studies. A comparison with the phonon band structure of the related material LiNbO3 shows minor differences that can be traced to the atomic‐mass difference between Ta and Nb. The presence of phonons with imaginary frequencies for the paraelectric phase suggests that it does not correspond to a minimum energy structure, and is compatible with an order‐disorder type phase transition. article_type: original author: - first_name: Michael full_name: Friedrich, Michael last_name: Friedrich - first_name: Arno full_name: Schindlmayr, Arno id: '458' last_name: Schindlmayr orcid: 0000-0002-4855-071X - first_name: Wolf Gero full_name: Schmidt, Wolf Gero id: '468' last_name: Schmidt orcid: 0000-0002-2717-5076 - first_name: Simone full_name: Sanna, Simone last_name: Sanna citation: ama: Friedrich M, Schindlmayr A, Schmidt WG, Sanna S. LiTaO3 phonon dispersion and ferroelectric transition calculated from first principles. Physica Status Solidi B. 2016;253(4):683-689. doi:10.1002/pssb.201552576 apa: Friedrich, M., Schindlmayr, A., Schmidt, W. G., & Sanna, S. (2016). LiTaO3 phonon dispersion and ferroelectric transition calculated from first principles. Physica Status Solidi B, 253(4), 683–689. https://doi.org/10.1002/pssb.201552576 bibtex: '@article{Friedrich_Schindlmayr_Schmidt_Sanna_2016, title={LiTaO3 phonon dispersion and ferroelectric transition calculated from first principles}, volume={253}, DOI={10.1002/pssb.201552576}, number={4}, journal={Physica Status Solidi B}, publisher={Wiley-VCH}, author={Friedrich, Michael and Schindlmayr, Arno and Schmidt, Wolf Gero and Sanna, Simone}, year={2016}, pages={683–689} }' chicago: 'Friedrich, Michael, Arno Schindlmayr, Wolf Gero Schmidt, and Simone Sanna. “LiTaO3 Phonon Dispersion and Ferroelectric Transition Calculated from First Principles.” Physica Status Solidi B 253, no. 4 (2016): 683–89. https://doi.org/10.1002/pssb.201552576.' ieee: 'M. Friedrich, A. Schindlmayr, W. G. Schmidt, and S. Sanna, “LiTaO3 phonon dispersion and ferroelectric transition calculated from first principles,” Physica Status Solidi B, vol. 253, no. 4, pp. 683–689, 2016, doi: 10.1002/pssb.201552576.' mla: Friedrich, Michael, et al. “LiTaO3 Phonon Dispersion and Ferroelectric Transition Calculated from First Principles.” Physica Status Solidi B, vol. 253, no. 4, Wiley-VCH, 2016, pp. 683–89, doi:10.1002/pssb.201552576. short: M. Friedrich, A. Schindlmayr, W.G. Schmidt, S. Sanna, Physica Status Solidi B 253 (2016) 683–689. date_created: 2019-05-29T07:52:52Z date_updated: 2025-12-05T09:58:55Z ddc: - '530' department: - _id: '295' - _id: '296' - _id: '230' - _id: '429' - _id: '15' - _id: '35' - _id: '27' doi: 10.1002/pssb.201552576 external_id: isi: - '000374142500015' file: - access_level: closed content_type: application/pdf creator: schindlm date_created: 2020-08-28T14:22:11Z date_updated: 2020-08-30T14:41:39Z description: © 2015 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim file_id: '18577' file_name: pssb.201552576.pdf file_size: 402594 relation: main_file title: LiTaO3 phonon dispersion and ferroelectric transition calculated from first principles file_date_updated: 2020-08-30T14:41:39Z has_accepted_license: '1' intvolume: ' 253' isi: '1' issue: '4' language: - iso: eng page: 683-689 project: - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing - _id: '53' name: TRR 142 - _id: '55' name: TRR 142 - Project Area B - _id: '69' name: TRR 142 - Subproject B4 - _id: '52' name: Computing Resources Provided by the Paderborn Center for Parallel Computing publication: Physica Status Solidi B publication_identifier: eissn: - 1521-3951 issn: - 0370-1972 publication_status: published publisher: Wiley-VCH quality_controlled: '1' status: public title: LiTaO3 phonon dispersion and ferroelectric transition calculated from first principles type: journal_article user_id: '16199' volume: 253 year: '2016' ...