[{"doi":"10.1016/j.jcrysgro.2010.07.027","title":"Understanding the cubic AlN growth plane from first principles","volume":312,"author":[{"first_name":"E.","full_name":"Rauls, E.","last_name":"Rauls"},{"first_name":"J.","last_name":"Wiebe","full_name":"Wiebe, J."},{"first_name":"Wolf Gero","full_name":"Schmidt, Wolf Gero","id":"468","orcid":"0000-0002-2717-5076","last_name":"Schmidt"}],"date_created":"2019-10-15T07:34:48Z","date_updated":"2025-12-16T07:49:01Z","page":"2892-2895","intvolume":"       312","citation":{"chicago":"Rauls, E., J. Wiebe, and Wolf Gero Schmidt. “Understanding the Cubic AlN Growth Plane from First Principles.” <i>Journal of Crystal Growth</i> 312 (2010): 2892–95. <a href=\"https://doi.org/10.1016/j.jcrysgro.2010.07.027\">https://doi.org/10.1016/j.jcrysgro.2010.07.027</a>.","ieee":"E. Rauls, J. Wiebe, and W. G. Schmidt, “Understanding the cubic AlN growth plane from first principles,” <i>Journal of Crystal Growth</i>, vol. 312, pp. 2892–2895, 2010, doi: <a href=\"https://doi.org/10.1016/j.jcrysgro.2010.07.027\">10.1016/j.jcrysgro.2010.07.027</a>.","ama":"Rauls E, Wiebe J, Schmidt WG. Understanding the cubic AlN growth plane from first principles. <i>Journal of Crystal Growth</i>. 2010;312:2892-2895. doi:<a href=\"https://doi.org/10.1016/j.jcrysgro.2010.07.027\">10.1016/j.jcrysgro.2010.07.027</a>","mla":"Rauls, E., et al. “Understanding the Cubic AlN Growth Plane from First Principles.” <i>Journal of Crystal Growth</i>, vol. 312, 2010, pp. 2892–95, doi:<a href=\"https://doi.org/10.1016/j.jcrysgro.2010.07.027\">10.1016/j.jcrysgro.2010.07.027</a>.","short":"E. Rauls, J. Wiebe, W.G. Schmidt, Journal of Crystal Growth 312 (2010) 2892–2895.","bibtex":"@article{Rauls_Wiebe_Schmidt_2010, title={Understanding the cubic AlN growth plane from first principles}, volume={312}, DOI={<a href=\"https://doi.org/10.1016/j.jcrysgro.2010.07.027\">10.1016/j.jcrysgro.2010.07.027</a>}, journal={Journal of Crystal Growth}, author={Rauls, E. and Wiebe, J. and Schmidt, Wolf Gero}, year={2010}, pages={2892–2895} }","apa":"Rauls, E., Wiebe, J., &#38; Schmidt, W. G. (2010). Understanding the cubic AlN growth plane from first principles. <i>Journal of Crystal Growth</i>, <i>312</i>, 2892–2895. <a href=\"https://doi.org/10.1016/j.jcrysgro.2010.07.027\">https://doi.org/10.1016/j.jcrysgro.2010.07.027</a>"},"year":"2010","publication_identifier":{"issn":["0022-0248"]},"publication_status":"published","funded_apc":"1","language":[{"iso":"eng"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"35"},{"_id":"230"}],"user_id":"16199","_id":"13830","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"status":"public","publication":"Journal of Crystal Growth","type":"journal_article"},{"date_created":"2019-10-15T07:40:10Z","author":[{"first_name":"Simone","last_name":"Sanna","full_name":"Sanna, Simone"},{"full_name":"Schmidt, Wolf Gero","id":"468","last_name":"Schmidt","orcid":"0000-0002-2717-5076","first_name":"Wolf Gero"}],"volume":256,"date_updated":"2025-12-16T07:47:24Z","doi":"10.1016/j.apsusc.2010.03.098","title":"GaN/LiNbO3 (0001) interface formation calculated from first-principles","publication_status":"published","publication_identifier":{"issn":["0169-4332"]},"citation":{"chicago":"Sanna, Simone, and Wolf Gero Schmidt. “GaN/LiNbO3 (0001) Interface Formation Calculated from First-Principles.” <i>Applied Surface Science</i> 256 (2010): 5740–43. <a href=\"https://doi.org/10.1016/j.apsusc.2010.03.098\">https://doi.org/10.1016/j.apsusc.2010.03.098</a>.","ieee":"S. Sanna and W. G. Schmidt, “GaN/LiNbO3 (0001) interface formation calculated from first-principles,” <i>Applied Surface Science</i>, vol. 256, pp. 5740–5743, 2010, doi: <a href=\"https://doi.org/10.1016/j.apsusc.2010.03.098\">10.1016/j.apsusc.2010.03.098</a>.","ama":"Sanna S, Schmidt WG. GaN/LiNbO3 (0001) interface formation calculated from first-principles. <i>Applied Surface Science</i>. 2010;256:5740-5743. doi:<a href=\"https://doi.org/10.1016/j.apsusc.2010.03.098\">10.1016/j.apsusc.2010.03.098</a>","bibtex":"@article{Sanna_Schmidt_2010, title={GaN/LiNbO3 (0001) interface formation calculated from first-principles}, volume={256}, DOI={<a href=\"https://doi.org/10.1016/j.apsusc.2010.03.098\">10.1016/j.apsusc.2010.03.098</a>}, journal={Applied Surface Science}, author={Sanna, Simone and Schmidt, Wolf Gero}, year={2010}, pages={5740–5743} }","mla":"Sanna, Simone, and Wolf Gero Schmidt. “GaN/LiNbO3 (0001) Interface Formation Calculated from First-Principles.” <i>Applied Surface Science</i>, vol. 256, 2010, pp. 5740–43, doi:<a href=\"https://doi.org/10.1016/j.apsusc.2010.03.098\">10.1016/j.apsusc.2010.03.098</a>.","short":"S. Sanna, W.G. Schmidt, Applied Surface Science 256 (2010) 5740–5743.","apa":"Sanna, S., &#38; Schmidt, W. G. (2010). GaN/LiNbO3 (0001) interface formation calculated from first-principles. <i>Applied Surface Science</i>, <i>256</i>, 5740–5743. <a href=\"https://doi.org/10.1016/j.apsusc.2010.03.098\">https://doi.org/10.1016/j.apsusc.2010.03.098</a>"},"page":"5740-5743","intvolume":"       256","year":"2010","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"35"},{"_id":"230"},{"_id":"27"}],"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"_id":"13834","funded_apc":"1","language":[{"iso":"eng"}],"type":"journal_article","publication":"Applied Surface Science","status":"public"},{"publication_status":"published","publication_identifier":{"issn":["1948-7185"]},"citation":{"bibtex":"@article{Blankenburg_Rauls_Schmidt_2010, title={Catalytic Action of a Cu(111) Surface on Tetraazaperopyrene Polymerization}, volume={1}, DOI={<a href=\"https://doi.org/10.1021/jz101389u\">10.1021/jz101389u</a>}, journal={The Journal of Physical Chemistry Letters}, author={Blankenburg, S. and Rauls, E. and Schmidt, Wolf Gero}, year={2010}, pages={3266–3270} }","mla":"Blankenburg, S., et al. “Catalytic Action of a Cu(111) Surface on Tetraazaperopyrene Polymerization.” <i>The Journal of Physical Chemistry Letters</i>, vol. 1, 2010, pp. 3266–70, doi:<a href=\"https://doi.org/10.1021/jz101389u\">10.1021/jz101389u</a>.","short":"S. Blankenburg, E. Rauls, W.G. Schmidt, The Journal of Physical Chemistry Letters 1 (2010) 3266–3270.","apa":"Blankenburg, S., Rauls, E., &#38; Schmidt, W. G. (2010). Catalytic Action of a Cu(111) Surface on Tetraazaperopyrene Polymerization. <i>The Journal of Physical Chemistry Letters</i>, <i>1</i>, 3266–3270. <a href=\"https://doi.org/10.1021/jz101389u\">https://doi.org/10.1021/jz101389u</a>","ama":"Blankenburg S, Rauls E, Schmidt WG. Catalytic Action of a Cu(111) Surface on Tetraazaperopyrene Polymerization. <i>The Journal of Physical Chemistry Letters</i>. 2010;1:3266-3270. doi:<a href=\"https://doi.org/10.1021/jz101389u\">10.1021/jz101389u</a>","chicago":"Blankenburg, S., E. Rauls, and Wolf Gero Schmidt. “Catalytic Action of a Cu(111) Surface on Tetraazaperopyrene Polymerization.” <i>The Journal of Physical Chemistry Letters</i> 1 (2010): 3266–70. <a href=\"https://doi.org/10.1021/jz101389u\">https://doi.org/10.1021/jz101389u</a>.","ieee":"S. Blankenburg, E. Rauls, and W. G. Schmidt, “Catalytic Action of a Cu(111) Surface on Tetraazaperopyrene Polymerization,” <i>The Journal of Physical Chemistry Letters</i>, vol. 1, pp. 3266–3270, 2010, doi: <a href=\"https://doi.org/10.1021/jz101389u\">10.1021/jz101389u</a>."},"intvolume":"         1","page":"3266-3270","year":"2010","date_created":"2019-10-15T07:24:15Z","author":[{"last_name":"Blankenburg","full_name":"Blankenburg, S.","first_name":"S."},{"last_name":"Rauls","full_name":"Rauls, E.","first_name":"E."},{"first_name":"Wolf Gero","id":"468","full_name":"Schmidt, Wolf Gero","orcid":"0000-0002-2717-5076","last_name":"Schmidt"}],"volume":1,"date_updated":"2025-12-16T07:50:41Z","doi":"10.1021/jz101389u","title":"Catalytic Action of a Cu(111) Surface on Tetraazaperopyrene Polymerization","type":"journal_article","publication":"The Journal of Physical Chemistry Letters","status":"public","user_id":"16199","department":[{"_id":"15"},{"_id":"170"},{"_id":"295"},{"_id":"35"},{"_id":"230"},{"_id":"27"}],"project":[{"name":"Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"13826","funded_apc":"1","language":[{"iso":"eng"}]},{"date_updated":"2025-12-16T08:02:49Z","author":[{"last_name":"Schumacher","orcid":"0000-0003-4042-4951","full_name":"Schumacher, Stefan","id":"27271","first_name":"Stefan"},{"first_name":"Ian","last_name":"Galbraith","full_name":"Galbraith, Ian"},{"last_name":"Ruseckas","full_name":"Ruseckas, Arvydas","first_name":"Arvydas"},{"first_name":"Graham A.","last_name":"Turnbull","full_name":"Turnbull, Graham A."},{"last_name":"Samuel","full_name":"Samuel, Ifor D. W.","first_name":"Ifor D. W."}],"date_created":"2020-02-10T11:19:35Z","title":"Dynamics of photoexcitation and stimulated optical emission in conjugated polymers: A multiscale quantum-chemistry and Maxwell-Bloch-equations approach","doi":"10.1103/physrevb.81.245407","publication_identifier":{"issn":["1098-0121","1550-235X"]},"publication_status":"published","year":"2010","citation":{"ama":"Schumacher S, Galbraith I, Ruseckas A, Turnbull GA, Samuel IDW. Dynamics of photoexcitation and stimulated optical emission in conjugated polymers: A multiscale quantum-chemistry and Maxwell-Bloch-equations approach. <i>Physical Review B</i>. Published online 2010. doi:<a href=\"https://doi.org/10.1103/physrevb.81.245407\">10.1103/physrevb.81.245407</a>","ieee":"S. Schumacher, I. Galbraith, A. Ruseckas, G. A. Turnbull, and I. D. W. Samuel, “Dynamics of photoexcitation and stimulated optical emission in conjugated polymers: A multiscale quantum-chemistry and Maxwell-Bloch-equations approach,” <i>Physical Review B</i>, 2010, doi: <a href=\"https://doi.org/10.1103/physrevb.81.245407\">10.1103/physrevb.81.245407</a>.","chicago":"Schumacher, Stefan, Ian Galbraith, Arvydas Ruseckas, Graham A. Turnbull, and Ifor D. W. Samuel. “Dynamics of Photoexcitation and Stimulated Optical Emission in Conjugated Polymers: A Multiscale Quantum-Chemistry and Maxwell-Bloch-Equations Approach.” <i>Physical Review B</i>, 2010. <a href=\"https://doi.org/10.1103/physrevb.81.245407\">https://doi.org/10.1103/physrevb.81.245407</a>.","apa":"Schumacher, S., Galbraith, I., Ruseckas, A., Turnbull, G. A., &#38; Samuel, I. D. W. (2010). Dynamics of photoexcitation and stimulated optical emission in conjugated polymers: A multiscale quantum-chemistry and Maxwell-Bloch-equations approach. <i>Physical Review B</i>. <a href=\"https://doi.org/10.1103/physrevb.81.245407\">https://doi.org/10.1103/physrevb.81.245407</a>","short":"S. Schumacher, I. Galbraith, A. Ruseckas, G.A. Turnbull, I.D.W. Samuel, Physical Review B (2010).","mla":"Schumacher, Stefan, et al. “Dynamics of Photoexcitation and Stimulated Optical Emission in Conjugated Polymers: A Multiscale Quantum-Chemistry and Maxwell-Bloch-Equations Approach.” <i>Physical Review B</i>, 2010, doi:<a href=\"https://doi.org/10.1103/physrevb.81.245407\">10.1103/physrevb.81.245407</a>.","bibtex":"@article{Schumacher_Galbraith_Ruseckas_Turnbull_Samuel_2010, title={Dynamics of photoexcitation and stimulated optical emission in conjugated polymers: A multiscale quantum-chemistry and Maxwell-Bloch-equations approach}, DOI={<a href=\"https://doi.org/10.1103/physrevb.81.245407\">10.1103/physrevb.81.245407</a>}, journal={Physical Review B}, author={Schumacher, Stefan and Galbraith, Ian and Ruseckas, Arvydas and Turnbull, Graham A. and Samuel, Ifor D. W.}, year={2010} }"},"_id":"15846","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"}],"department":[{"_id":"15"},{"_id":"170"},{"_id":"297"},{"_id":"35"},{"_id":"230"},{"_id":"27"}],"user_id":"16199","language":[{"iso":"eng"}],"publication":"Physical Review B","type":"journal_article","status":"public"},{"volume":7,"author":[{"first_name":"Mohammed","last_name":"Bouhassoune","full_name":"Bouhassoune, Mohammed"},{"first_name":"Arno","full_name":"Schindlmayr, Arno","id":"458","orcid":"0000-0002-4855-071X","last_name":"Schindlmayr"}],"date_updated":"2025-12-16T08:10:05Z","doi":"10.1002/pssc.200982470","conference":{"end_date":"2009-07-10","location":"Weimar","name":"12th International Conference on the Formation of Semiconductor Interfaces","start_date":"2009-07-05"},"publication_identifier":{"issn":["1862-6351"],"eissn":["1610-1642"]},"has_accepted_license":"1","publication_status":"published","page":"460-463","intvolume":"         7","citation":{"mla":"Bouhassoune, Mohammed, and Arno Schindlmayr. “Electronic Structure and Effective Masses in Strained Silicon.” <i>Physica Status Solidi C</i>, vol. 7, no. 2, Wiley-VCH, 2010, pp. 460–63, doi:<a href=\"https://doi.org/10.1002/pssc.200982470\">10.1002/pssc.200982470</a>.","bibtex":"@article{Bouhassoune_Schindlmayr_2010, title={Electronic structure and effective masses in strained silicon}, volume={7}, DOI={<a href=\"https://doi.org/10.1002/pssc.200982470\">10.1002/pssc.200982470</a>}, number={2}, journal={Physica Status Solidi C}, publisher={Wiley-VCH}, author={Bouhassoune, Mohammed and Schindlmayr, Arno}, year={2010}, pages={460–463} }","short":"M. Bouhassoune, A. Schindlmayr, Physica Status Solidi C 7 (2010) 460–463.","apa":"Bouhassoune, M., &#38; Schindlmayr, A. (2010). Electronic structure and effective masses in strained silicon. <i>Physica Status Solidi C</i>, <i>7</i>(2), 460–463. <a href=\"https://doi.org/10.1002/pssc.200982470\">https://doi.org/10.1002/pssc.200982470</a>","ama":"Bouhassoune M, Schindlmayr A. Electronic structure and effective masses in strained silicon. <i>Physica Status Solidi C</i>. 2010;7(2):460-463. doi:<a href=\"https://doi.org/10.1002/pssc.200982470\">10.1002/pssc.200982470</a>","ieee":"M. Bouhassoune and A. Schindlmayr, “Electronic structure and effective masses in strained silicon,” <i>Physica Status Solidi C</i>, vol. 7, no. 2, pp. 460–463, 2010, doi: <a href=\"https://doi.org/10.1002/pssc.200982470\">10.1002/pssc.200982470</a>.","chicago":"Bouhassoune, Mohammed, and Arno Schindlmayr. “Electronic Structure and Effective Masses in Strained Silicon.” <i>Physica Status Solidi C</i> 7, no. 2 (2010): 460–63. <a href=\"https://doi.org/10.1002/pssc.200982470\">https://doi.org/10.1002/pssc.200982470</a>."},"department":[{"_id":"296"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"}],"user_id":"16199","_id":"18562","file_date_updated":"2020-08-30T15:13:32Z","article_type":"original","isi":"1","type":"journal_article","status":"public","date_created":"2020-08-28T11:35:38Z","publisher":"Wiley-VCH","title":"Electronic structure and effective masses in strained silicon","issue":"2","quality_controlled":"1","year":"2010","external_id":{"isi":["000284313000081"]},"language":[{"iso":"eng"}],"ddc":["530"],"publication":"Physica Status Solidi C","file":[{"date_created":"2020-08-28T14:38:30Z","creator":"schindlm","date_updated":"2020-08-30T15:13:32Z","access_level":"closed","file_id":"18582","file_name":"pssc.200982470.pdf","description":"© 2010 WILEY‐VCH Verlag GmbH & Co. KGaA, Weinheim","file_size":118792,"title":"Electronic structure and effective masses in strained silicon","content_type":"application/pdf","relation":"main_file"}],"abstract":[{"text":"The structural and electronic properties of strained silicon are investigated quantitatively with ab initio computational methods. For this purpose we combine densityfunctional theory within the local‐density approximation and the GW approximation for the electronic self‐energy. From the variation of the total energy as a function of applied strain we obtain the elastic constants, Poisson ratios and related structural parameters, taking a possible internal relaxation fully into account. For biaxial tensile strain in the (001) and (111) planes we then investigate the effects on the electronic band structure. These strain configurations occur in epitaxial silicon films grown on SiGe templates along different crystallographic directions.\r\nThe tetragonal deformation resulting from (001) strain induces a valley splitting that removes the sixfold degeneracy of the conduction‐band minimum. Furthermore, strain in any direction causes the band structure to warp. We present quantitative results for the electron effective mass, derived from the curvature of the conduction band, as a function of strain and discuss the implications for the mobility of the charge carriers. The inclusion of proper self‐energy corrections within the GW approximation in our work not only yields band gaps in much better agreement with experimental measurements than the localdensity approximation, but also predicts slightly larger electron effective masses.","lang":"eng"}]},{"language":[{"iso":"eng"}],"abstract":[{"text":"We describe the software package SPEX, which allows first-principles calculations of quasiparticle and collective electronic excitations in solids using techniques from many-body perturbation theory. The implementation is based on the full-potential linearized augmented-plane-wave (FLAPW) method, which treats core and valence electrons on an equal footing and can be applied to a wide range of materials, including transition metals and rare earths. After a discussion of essential features that contribute to the high numerical efficiency of the code, we present illustrative results for quasiparticle band structures calculated within the GW approximation for the electronic self-energy, electron-energy-loss spectra with inter- and intraband transitions as well as local-field effects, and spin-wave spectra of itinerant ferromagnets. In all cases the inclusion of many-body correlation terms leads to very good quantitative agreement with experimental spectroscopies.","lang":"eng"}],"publication":"Modern and Universal First-Principles Methods for Many-Electron Systems in Chemistry and Physics","title":"First-principles calculation of electronic excitations in solids with SPEX","date_created":"2020-08-28T11:03:04Z","publisher":"Oldenbourg","year":"2010","quality_controlled":"1","user_id":"16199","series_title":"Progress in Physical Chemistry","department":[{"_id":"296"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"}],"_id":"18549","status":"public","editor":[{"last_name":"Dolg","full_name":"Dolg, Franz Michael","first_name":"Franz Michael"}],"type":"book_chapter","doi":"10.1524/9783486711639.67","author":[{"first_name":"Arno","full_name":"Schindlmayr, Arno","id":"458","orcid":"0000-0002-4855-071X","last_name":"Schindlmayr"},{"first_name":"Christoph","last_name":"Friedrich","full_name":"Friedrich, Christoph"},{"full_name":"Şaşıoğlu, Ersoy","last_name":"Şaşıoğlu","first_name":"Ersoy"},{"full_name":"Blügel, Stefan","last_name":"Blügel","first_name":"Stefan"}],"volume":3,"date_updated":"2025-12-16T08:09:01Z","citation":{"chicago":"Schindlmayr, Arno, Christoph Friedrich, Ersoy Şaşıoğlu, and Stefan Blügel. “First-Principles Calculation of Electronic Excitations in Solids with SPEX.” In <i>Modern and Universal First-Principles Methods for Many-Electron Systems in Chemistry and Physics</i>, edited by Franz Michael Dolg, 3:67–78. Progress in Physical Chemistry. München: Oldenbourg, 2010. <a href=\"https://doi.org/10.1524/9783486711639.67\">https://doi.org/10.1524/9783486711639.67</a>.","ieee":"A. Schindlmayr, C. Friedrich, E. Şaşıoğlu, and S. Blügel, “First-principles calculation of electronic excitations in solids with SPEX,” in <i>Modern and Universal First-Principles Methods for Many-Electron Systems in Chemistry and Physics</i>, vol. 3, F. M. Dolg, Ed. München: Oldenbourg, 2010, pp. 67–78.","ama":"Schindlmayr A, Friedrich C, Şaşıoğlu E, Blügel S. First-principles calculation of electronic excitations in solids with SPEX. In: Dolg FM, ed. <i>Modern and Universal First-Principles Methods for Many-Electron Systems in Chemistry and Physics</i>. Vol 3. Progress in Physical Chemistry. Oldenbourg; 2010:67-78. doi:<a href=\"https://doi.org/10.1524/9783486711639.67\">10.1524/9783486711639.67</a>","bibtex":"@inbook{Schindlmayr_Friedrich_Şaşıoğlu_Blügel_2010, place={München}, series={Progress in Physical Chemistry}, title={First-principles calculation of electronic excitations in solids with SPEX}, volume={3}, DOI={<a href=\"https://doi.org/10.1524/9783486711639.67\">10.1524/9783486711639.67</a>}, booktitle={Modern and Universal First-Principles Methods for Many-Electron Systems in Chemistry and Physics}, publisher={Oldenbourg}, author={Schindlmayr, Arno and Friedrich, Christoph and Şaşıoğlu, Ersoy and Blügel, Stefan}, editor={Dolg, Franz Michael}, year={2010}, pages={67–78}, collection={Progress in Physical Chemistry} }","mla":"Schindlmayr, Arno, et al. “First-Principles Calculation of Electronic Excitations in Solids with SPEX.” <i>Modern and Universal First-Principles Methods for Many-Electron Systems in Chemistry and Physics</i>, edited by Franz Michael Dolg, vol. 3, Oldenbourg, 2010, pp. 67–78, doi:<a href=\"https://doi.org/10.1524/9783486711639.67\">10.1524/9783486711639.67</a>.","short":"A. Schindlmayr, C. Friedrich, E. Şaşıoğlu, S. Blügel, in: F.M. Dolg (Ed.), Modern and Universal First-Principles Methods for Many-Electron Systems in Chemistry and Physics, Oldenbourg, München, 2010, pp. 67–78.","apa":"Schindlmayr, A., Friedrich, C., Şaşıoğlu, E., &#38; Blügel, S. (2010). First-principles calculation of electronic excitations in solids with SPEX. In F. M. Dolg (Ed.), <i>Modern and Universal First-Principles Methods for Many-Electron Systems in Chemistry and Physics</i> (Vol. 3, pp. 67–78). Oldenbourg. <a href=\"https://doi.org/10.1524/9783486711639.67\">https://doi.org/10.1524/9783486711639.67</a>"},"page":"67-78","intvolume":"         3","place":"München","publication_status":"published","publication_identifier":{"eisbn":["978-3-486-71163-9"],"isbn":["978-3-486-59827-8"]}},{"abstract":[{"text":"We present a computational scheme to study spin excitations in magnetic materials from first principles. The central quantity is the transverse spin susceptibility, from which the complete excitation spectrum, including single-particle spin-flip Stoner excitations and collective spin-wave modes, can be obtained. The susceptibility is derived from many-body perturbation theory and includes dynamic correlation through a summation over ladder diagrams that describe the coupling of electrons and holes with opposite spins. In contrast to earlier studies, we do not use a model potential with adjustable parameters for the electron-hole interaction but employ the random-phase approximation. To reduce the numerical cost for the calculation of the four-point scattering matrix we perform a projection onto maximally localized Wannier functions, which allows us to truncate the matrix efficiently by exploiting the short spatial range of electronic correlation in the partially filled d or f orbitals. Our implementation is based on the full-potential linearized augmented-plane-wave method. Starting from a ground-state calculation within the local-spin-density approximation (LSDA), we first analyze the matrix elements of the screened Coulomb potential in the Wannier basis for the 3d transition-metal series. In particular, we discuss the differences between a constrained nonmagnetic and a proper spin-polarized treatment for the ferromagnets Fe, Co, and Ni. The spectrum of single-particle and collective spin excitations in fcc Ni is then studied in detail. The calculated spin-wave dispersion is in good overall agreement with experimental data and contains both an acoustic and an optical branch for intermediate wave vectors along the [100] direction. In addition, we find evidence for a similar double-peak structure in the spectral function along the [111] direction. To investigate the influence of static correlation we finally consider LSDA+U as an alternative starting point and show that, together with an improved description of the Fermi surface, it yields a more accurate quantitative value for the spin-wave stiffness constant, which is overestimated in the LSDA.","lang":"eng"}],"file":[{"file_name":"PhysRevB.81.054434.pdf","file_id":"18561","access_level":"open_access","title":"Wannier-function approach to spin excitations in solids","file_size":711970,"description":"© 2010 American Physical Society","creator":"schindlm","date_created":"2020-08-28T11:33:17Z","date_updated":"2020-08-30T15:06:10Z","relation":"main_file","content_type":"application/pdf"}],"publication":"Physical Review B","ddc":["530"],"language":[{"iso":"eng"}],"external_id":{"arxiv":["1002.4897"],"isi":["000274998000084"]},"year":"2010","quality_controlled":"1","issue":"5","title":"Wannier-function approach to spin excitations in solids","publisher":"American Physical Society","date_created":"2020-08-28T11:31:26Z","status":"public","type":"journal_article","article_type":"original","article_number":"054434","isi":"1","file_date_updated":"2020-08-30T15:06:10Z","_id":"18560","user_id":"16199","department":[{"_id":"296"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"}],"citation":{"ama":"Şaşıoğlu E, Schindlmayr A, Friedrich C, Freimuth F, Blügel S. Wannier-function approach to spin excitations in solids. <i>Physical Review B</i>. 2010;81(5). doi:<a href=\"https://doi.org/10.1103/PhysRevB.81.054434\">10.1103/PhysRevB.81.054434</a>","chicago":"Şaşıoğlu, Ersoy, Arno Schindlmayr, Christoph Friedrich, Frank Freimuth, and Stefan Blügel. “Wannier-Function Approach to Spin Excitations in Solids.” <i>Physical Review B</i> 81, no. 5 (2010). <a href=\"https://doi.org/10.1103/PhysRevB.81.054434\">https://doi.org/10.1103/PhysRevB.81.054434</a>.","ieee":"E. Şaşıoğlu, A. Schindlmayr, C. Friedrich, F. Freimuth, and S. Blügel, “Wannier-function approach to spin excitations in solids,” <i>Physical Review B</i>, vol. 81, no. 5, Art. no. 054434, 2010, doi: <a href=\"https://doi.org/10.1103/PhysRevB.81.054434\">10.1103/PhysRevB.81.054434</a>.","mla":"Şaşıoğlu, Ersoy, et al. “Wannier-Function Approach to Spin Excitations in Solids.” <i>Physical Review B</i>, vol. 81, no. 5, 054434, American Physical Society, 2010, doi:<a href=\"https://doi.org/10.1103/PhysRevB.81.054434\">10.1103/PhysRevB.81.054434</a>.","bibtex":"@article{Şaşıoğlu_Schindlmayr_Friedrich_Freimuth_Blügel_2010, title={Wannier-function approach to spin excitations in solids}, volume={81}, DOI={<a href=\"https://doi.org/10.1103/PhysRevB.81.054434\">10.1103/PhysRevB.81.054434</a>}, number={5054434}, journal={Physical Review B}, publisher={American Physical Society}, author={Şaşıoğlu, Ersoy and Schindlmayr, Arno and Friedrich, Christoph and Freimuth, Frank and Blügel, Stefan}, year={2010} }","short":"E. Şaşıoğlu, A. Schindlmayr, C. Friedrich, F. Freimuth, S. Blügel, Physical Review B 81 (2010).","apa":"Şaşıoğlu, E., Schindlmayr, A., Friedrich, C., Freimuth, F., &#38; Blügel, S. (2010). Wannier-function approach to spin excitations in solids. <i>Physical Review B</i>, <i>81</i>(5), Article 054434. <a href=\"https://doi.org/10.1103/PhysRevB.81.054434\">https://doi.org/10.1103/PhysRevB.81.054434</a>"},"intvolume":"        81","publication_status":"published","publication_identifier":{"eissn":["1550-235X"],"issn":["1098-0121"]},"has_accepted_license":"1","doi":"10.1103/PhysRevB.81.054434","date_updated":"2025-12-16T11:09:51Z","oa":"1","author":[{"full_name":"Şaşıoğlu, Ersoy","last_name":"Şaşıoğlu","first_name":"Ersoy"},{"last_name":"Schindlmayr","orcid":"0000-0002-4855-071X","id":"458","full_name":"Schindlmayr, Arno","first_name":"Arno"},{"first_name":"Christoph","full_name":"Friedrich, Christoph","last_name":"Friedrich"},{"full_name":"Freimuth, Frank","last_name":"Freimuth","first_name":"Frank"},{"first_name":"Stefan","last_name":"Blügel","full_name":"Blügel, Stefan"}],"volume":81},{"volume":224,"author":[{"first_name":"Arno","last_name":"Schindlmayr","orcid":"0000-0002-4855-071X","full_name":"Schindlmayr, Arno","id":"458"},{"full_name":"Friedrich, Christoph","last_name":"Friedrich","first_name":"Christoph"},{"first_name":"Ersoy","last_name":"Şaşıoğlu","full_name":"Şaşıoğlu, Ersoy"},{"first_name":"Stefan","last_name":"Blügel","full_name":"Blügel, Stefan"}],"date_updated":"2025-12-16T11:09:01Z","doi":"10.1524/zpch.2010.6110","has_accepted_license":"1","publication_identifier":{"eissn":["2196-7156"],"issn":["0942-9352"]},"publication_status":"published","page":"357-368","intvolume":"       224","citation":{"ama":"Schindlmayr A, Friedrich C, Şaşıoğlu E, Blügel S. First-principles calculation of electronic excitations in solids with SPEX. <i>Zeitschrift für Physikalische Chemie</i>. 2010;224(3-4):357-368. doi:<a href=\"https://doi.org/10.1524/zpch.2010.6110\">10.1524/zpch.2010.6110</a>","ieee":"A. Schindlmayr, C. Friedrich, E. Şaşıoğlu, and S. Blügel, “First-principles calculation of electronic excitations in solids with SPEX,” <i>Zeitschrift für Physikalische Chemie</i>, vol. 224, no. 3–4, pp. 357–368, 2010, doi: <a href=\"https://doi.org/10.1524/zpch.2010.6110\">10.1524/zpch.2010.6110</a>.","chicago":"Schindlmayr, Arno, Christoph Friedrich, Ersoy Şaşıoğlu, and Stefan Blügel. “First-Principles Calculation of Electronic Excitations in Solids with SPEX.” <i>Zeitschrift Für Physikalische Chemie</i> 224, no. 3–4 (2010): 357–68. <a href=\"https://doi.org/10.1524/zpch.2010.6110\">https://doi.org/10.1524/zpch.2010.6110</a>.","apa":"Schindlmayr, A., Friedrich, C., Şaşıoğlu, E., &#38; Blügel, S. (2010). First-principles calculation of electronic excitations in solids with SPEX. <i>Zeitschrift Für Physikalische Chemie</i>, <i>224</i>(3–4), 357–368. <a href=\"https://doi.org/10.1524/zpch.2010.6110\">https://doi.org/10.1524/zpch.2010.6110</a>","short":"A. Schindlmayr, C. Friedrich, E. Şaşıoğlu, S. Blügel, Zeitschrift Für Physikalische Chemie 224 (2010) 357–368.","mla":"Schindlmayr, Arno, et al. “First-Principles Calculation of Electronic Excitations in Solids with SPEX.” <i>Zeitschrift Für Physikalische Chemie</i>, vol. 224, no. 3–4, Oldenbourg, 2010, pp. 357–68, doi:<a href=\"https://doi.org/10.1524/zpch.2010.6110\">10.1524/zpch.2010.6110</a>.","bibtex":"@article{Schindlmayr_Friedrich_Şaşıoğlu_Blügel_2010, title={First-principles calculation of electronic excitations in solids with SPEX}, volume={224}, DOI={<a href=\"https://doi.org/10.1524/zpch.2010.6110\">10.1524/zpch.2010.6110</a>}, number={3–4}, journal={Zeitschrift für Physikalische Chemie}, publisher={Oldenbourg}, author={Schindlmayr, Arno and Friedrich, Christoph and Şaşıoğlu, Ersoy and Blügel, Stefan}, year={2010}, pages={357–368} }"},"department":[{"_id":"296"},{"_id":"35"},{"_id":"15"},{"_id":"170"},{"_id":"230"}],"user_id":"16199","_id":"18557","file_date_updated":"2020-08-30T15:04:39Z","isi":"1","article_type":"original","type":"journal_article","status":"public","date_created":"2020-08-28T11:20:50Z","publisher":"Oldenbourg","title":"First-principles calculation of electronic excitations in solids with SPEX","issue":"3-4","quality_controlled":"1","year":"2010","external_id":{"arxiv":["1110.1596"],"isi":["000281124800006"]},"language":[{"iso":"eng"}],"ddc":["530"],"publication":"Zeitschrift für Physikalische Chemie","file":[{"title":"First-principles calculation of electronic excitations in solids with SPEX","file_size":912086,"description":"© 2010 Oldenbourg Wissenschaftsverlag, München","access_level":"closed","file_name":"zpch.2010.6110.pdf","file_id":"18581","date_updated":"2020-08-30T15:04:39Z","creator":"schindlm","date_created":"2020-08-28T14:34:10Z","relation":"main_file","content_type":"application/pdf"}],"abstract":[{"lang":"eng","text":"We describe the software package SPEX, which allows first-principles calculations of quasiparticle and collective electronic excitations in solids using techniques from many-body perturbation theory. The implementation is based on the full-potential linearized augmented-plane-wave (FLAPW) method, which treats core and valence electrons on an equal footing and can be applied to a wide range of materials, including transition metals and rare earths. After a discussion of essential features that contribute to the high numerical efficiency of the code, we present illustrative results for quasiparticle band structures calculated within the GW approximation for the electronic self-energy, electron-energy-loss spectra with inter- and intraband transitions as well as local-field effects, and spin-wave spectra of itinerant ferromagnets. In all cases the inclusion of many-body correlation terms leads to very good quantitative agreement with experimental spectroscopies."}]},{"title":"Modeling excitonic line shapes in weakly disordered semiconductor nanostructures","date_created":"2018-08-28T09:09:37Z","publisher":"American Physical Society (APS)","year":"2010","issue":"7","language":[{"iso":"eng"}],"ddc":["530"],"keyword":["tet_topic_qw"],"file":[{"file_size":713758,"access_level":"closed","file_name":"2010 Kuznetsova,Gögh,Förstner,Meier T,Cundiff, Varga,Thomas_Modeling excitonic line shapes in weakly disordered semiconductor nanostructures.pdf","file_id":"4178","date_updated":"2018-08-28T09:13:01Z","date_created":"2018-08-28T09:13:01Z","creator":"hclaudia","success":1,"relation":"main_file","content_type":"application/pdf"}],"abstract":[{"text":"Excitonic spectra of weakly disordered semiconductor heterostructures are simulated on the basis of a\r\none-dimensional tight-binding model. The influence of the length scale of weak disorder in quantum wells on\r\nthe redshift of the excitonic peak and its linewidth is studied. By calculating two-dimensional Fouriertransform\r\nspectra we are able to determine the contribution of disorder to inhomogeneous and also to homogeneous\r\nbroadenings separately. This disorder-induced dephasing is related to a Fano-type coupling and leads\r\nto contributions to the homogeneous linewidth that depends on energy within the inhomogeneously broadened\r\nline. The model includes heavy- and light-hole excitons and yields smaller inhomogeneous broadening for the\r\nlight-hole exciton if compared to the heavy-hole exciton, which agrees qualitatively with the experiment.","lang":"eng"}],"publication":"Physical Review B","doi":"10.1103/physrevb.81.075307","author":[{"last_name":"Kuznetsova","full_name":"Kuznetsova, I.","first_name":"I."},{"last_name":"Gőgh","full_name":"Gőgh, N.","first_name":"N."},{"first_name":"Jens","id":"158","full_name":"Förstner, Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862"},{"id":"344","full_name":"Meier, Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","first_name":"Torsten"},{"last_name":"Cundiff","full_name":"Cundiff, S. T.","first_name":"S. T."},{"last_name":"Varga","full_name":"Varga, I.","first_name":"I."},{"first_name":"P.","last_name":"Thomas","full_name":"Thomas, P."}],"volume":81,"date_updated":"2025-12-16T11:24:45Z","citation":{"ieee":"I. Kuznetsova <i>et al.</i>, “Modeling excitonic line shapes in weakly disordered semiconductor nanostructures,” <i>Physical Review B</i>, vol. 81, no. 7, Art. no. 075307, 2010, doi: <a href=\"https://doi.org/10.1103/physrevb.81.075307\">10.1103/physrevb.81.075307</a>.","chicago":"Kuznetsova, I., N. Gőgh, Jens Förstner, Torsten Meier, S. T. Cundiff, I. Varga, and P. Thomas. “Modeling Excitonic Line Shapes in Weakly Disordered Semiconductor Nanostructures.” <i>Physical Review B</i> 81, no. 7 (2010). <a href=\"https://doi.org/10.1103/physrevb.81.075307\">https://doi.org/10.1103/physrevb.81.075307</a>.","ama":"Kuznetsova I, Gőgh N, Förstner J, et al. Modeling excitonic line shapes in weakly disordered semiconductor nanostructures. <i>Physical Review B</i>. 2010;81(7). doi:<a href=\"https://doi.org/10.1103/physrevb.81.075307\">10.1103/physrevb.81.075307</a>","bibtex":"@article{Kuznetsova_Gőgh_Förstner_Meier_Cundiff_Varga_Thomas_2010, title={Modeling excitonic line shapes in weakly disordered semiconductor nanostructures}, volume={81}, DOI={<a href=\"https://doi.org/10.1103/physrevb.81.075307\">10.1103/physrevb.81.075307</a>}, number={7075307}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Kuznetsova, I. and Gőgh, N. and Förstner, Jens and Meier, Torsten and Cundiff, S. T. and Varga, I. and Thomas, P.}, year={2010} }","short":"I. Kuznetsova, N. Gőgh, J. Förstner, T. Meier, S.T. Cundiff, I. Varga, P. Thomas, Physical Review B 81 (2010).","mla":"Kuznetsova, I., et al. “Modeling Excitonic Line Shapes in Weakly Disordered Semiconductor Nanostructures.” <i>Physical Review B</i>, vol. 81, no. 7, 075307, American Physical Society (APS), 2010, doi:<a href=\"https://doi.org/10.1103/physrevb.81.075307\">10.1103/physrevb.81.075307</a>.","apa":"Kuznetsova, I., Gőgh, N., Förstner, J., Meier, T., Cundiff, S. T., Varga, I., &#38; Thomas, P. (2010). Modeling excitonic line shapes in weakly disordered semiconductor nanostructures. <i>Physical Review B</i>, <i>81</i>(7), Article 075307. <a href=\"https://doi.org/10.1103/physrevb.81.075307\">https://doi.org/10.1103/physrevb.81.075307</a>"},"intvolume":"        81","publication_status":"published","has_accepted_license":"1","publication_identifier":{"issn":["1098-0121","1550-235X"]},"file_date_updated":"2018-08-28T09:13:01Z","article_type":"original","article_number":"075307","user_id":"16199","department":[{"_id":"15"},{"_id":"293"},{"_id":"170"},{"_id":"230"},{"_id":"35"},{"_id":"34"},{"_id":"61"}],"_id":"4177","status":"public","type":"journal_article"},{"language":[{"iso":"eng"}],"keyword":["tet_topic_microdisk"],"ddc":["530"],"publication":"Photonics and Nanostructures - Fundamentals and Applications","file":[{"content_type":"application/pdf","success":1,"relation":"main_file","date_updated":"2018-08-27T10:21:38Z","date_created":"2018-08-27T10:21:38Z","creator":"hclaudia","file_size":304758,"access_level":"closed","file_id":"4126","file_name":"2010 Declair,Meier C, Meier T, Förstner_Anticrossing of Whispering Gallery Modes in microdisk resonators embedded in an anisotropic environment.pdf"}],"abstract":[{"lang":"eng","text":"We numerically investigate the behavior of Whispering Gallery Modes (WGMs) in circularly shaped resonators like microdisks, with diameters in the range of optical vacuum wavelengths. The microdisk is embedded in an uniaxial anisotropic dielectric environment. By changing the optical anisotropy, one obtains spectral tunability of the optical modes. The degree of tunability strongly depends on the radial (azimuthal) mode order M (N). As the modes approach each other spectrally, anticrossing is observed, leading to a rearrangement of the optical states."}],"date_created":"2018-08-27T10:19:59Z","publisher":"Elsevier BV","title":"Anticrossing of Whispering Gallery Modes in microdisk resonators embedded in an anisotropic environment","issue":"4","year":"2010","department":[{"_id":"15"},{"_id":"230"},{"_id":"293"},{"_id":"287"},{"_id":"35"},{"_id":"170"},{"_id":"35"},{"_id":"34"},{"_id":"61"}],"user_id":"16199","_id":"4125","file_date_updated":"2018-08-27T10:21:38Z","article_type":"original","type":"journal_article","status":"public","volume":8,"author":[{"full_name":"Declair, S.","last_name":"Declair","first_name":"S."},{"first_name":"Cedrik","id":"20798","full_name":"Meier, Cedrik","last_name":"Meier","orcid":"https://orcid.org/0000-0002-3787-3572"},{"last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten","id":"344","first_name":"Torsten"},{"orcid":"0000-0001-7059-9862","last_name":"Förstner","full_name":"Förstner, Jens","id":"158","first_name":"Jens"}],"date_updated":"2025-12-16T11:23:48Z","doi":"10.1016/j.photonics.2010.03.002","has_accepted_license":"1","publication_identifier":{"issn":["1569-4410"]},"publication_status":"published","intvolume":"         8","page":"273-277","citation":{"ama":"Declair S, Meier C, Meier T, Förstner J. Anticrossing of Whispering Gallery Modes in microdisk resonators embedded in an anisotropic environment. <i>Photonics and Nanostructures - Fundamentals and Applications</i>. 2010;8(4):273-277. doi:<a href=\"https://doi.org/10.1016/j.photonics.2010.03.002\">10.1016/j.photonics.2010.03.002</a>","ieee":"S. Declair, C. Meier, T. Meier, and J. Förstner, “Anticrossing of Whispering Gallery Modes in microdisk resonators embedded in an anisotropic environment,” <i>Photonics and Nanostructures - Fundamentals and Applications</i>, vol. 8, no. 4, pp. 273–277, 2010, doi: <a href=\"https://doi.org/10.1016/j.photonics.2010.03.002\">10.1016/j.photonics.2010.03.002</a>.","chicago":"Declair, S., Cedrik Meier, Torsten Meier, and Jens Förstner. “Anticrossing of Whispering Gallery Modes in Microdisk Resonators Embedded in an Anisotropic Environment.” <i>Photonics and Nanostructures - Fundamentals and Applications</i> 8, no. 4 (2010): 273–77. <a href=\"https://doi.org/10.1016/j.photonics.2010.03.002\">https://doi.org/10.1016/j.photonics.2010.03.002</a>.","mla":"Declair, S., et al. “Anticrossing of Whispering Gallery Modes in Microdisk Resonators Embedded in an Anisotropic Environment.” <i>Photonics and Nanostructures - Fundamentals and Applications</i>, vol. 8, no. 4, Elsevier BV, 2010, pp. 273–77, doi:<a href=\"https://doi.org/10.1016/j.photonics.2010.03.002\">10.1016/j.photonics.2010.03.002</a>.","short":"S. Declair, C. Meier, T. Meier, J. Förstner, Photonics and Nanostructures - Fundamentals and Applications 8 (2010) 273–277.","bibtex":"@article{Declair_Meier_Meier_Förstner_2010, title={Anticrossing of Whispering Gallery Modes in microdisk resonators embedded in an anisotropic environment}, volume={8}, DOI={<a href=\"https://doi.org/10.1016/j.photonics.2010.03.002\">10.1016/j.photonics.2010.03.002</a>}, number={4}, journal={Photonics and Nanostructures - Fundamentals and Applications}, publisher={Elsevier BV}, author={Declair, S. and Meier, Cedrik and Meier, Torsten and Förstner, Jens}, year={2010}, pages={273–277} }","apa":"Declair, S., Meier, C., Meier, T., &#38; Förstner, J. (2010). Anticrossing of Whispering Gallery Modes in microdisk resonators embedded in an anisotropic environment. <i>Photonics and Nanostructures - Fundamentals and Applications</i>, <i>8</i>(4), 273–277. <a href=\"https://doi.org/10.1016/j.photonics.2010.03.002\">https://doi.org/10.1016/j.photonics.2010.03.002</a>"}},{"publication":"Nature Photonics","abstract":[{"lang":"eng","text":"The coherent state manipulation of single quantum systems is a fundamental requirement for the implementation of quantum information processors. Exciton qubits are of particular interest for coherent optoelectronic applications, in particular due to their excellent coupling to photons. Until now, coherent manipulations of exciton qubits in semiconductor quantum dots have been performed predominantly by pulsed laser fields. Coherent control of the population of excitonic states with a single laser pulse, observed by Rabi oscillations, has been demonstrated by several groups using different techniques1,2,3. By using two laser pulses, more general state control can be achieved4, and coupling of two excitons has been reported5,6. Here, we present a conceptually new approach for implementing the coherent control of an exciton two-level system (qubit) by means of a time-dependent electric interaction. The new scheme makes use of an optical clock signal and a synchronous electric gate signal, which controls the coherent manipulation."}],"language":[{"iso":"eng"}],"issue":"8","year":"2010","publisher":"Springer Nature","date_created":"2018-09-20T12:19:52Z","title":"Coherent control of a single exciton qubit by optoelectronic manipulation","type":"journal_article","status":"public","_id":"4547","user_id":"16199","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"},{"_id":"170"},{"_id":"293"},{"_id":"35"}],"article_type":"original","publication_status":"published","publication_identifier":{"issn":["1749-4885","1749-4893"]},"citation":{"ieee":"S. Michaelis de Vasconcellos, S. Gordon, M. Bichler, T. Meier, and A. Zrenner, “Coherent control of a single exciton qubit by optoelectronic manipulation,” <i>Nature Photonics</i>, vol. 4, no. 8, pp. 545–548, 2010, doi: <a href=\"https://doi.org/10.1038/nphoton.2010.124\">10.1038/nphoton.2010.124</a>.","chicago":"Michaelis de Vasconcellos, S., S. Gordon, M. Bichler, Torsten Meier, and Artur Zrenner. “Coherent Control of a Single Exciton Qubit by Optoelectronic Manipulation.” <i>Nature Photonics</i> 4, no. 8 (2010): 545–48. <a href=\"https://doi.org/10.1038/nphoton.2010.124\">https://doi.org/10.1038/nphoton.2010.124</a>.","ama":"Michaelis de Vasconcellos S, Gordon S, Bichler M, Meier T, Zrenner A. Coherent control of a single exciton qubit by optoelectronic manipulation. <i>Nature Photonics</i>. 2010;4(8):545-548. doi:<a href=\"https://doi.org/10.1038/nphoton.2010.124\">10.1038/nphoton.2010.124</a>","apa":"Michaelis de Vasconcellos, S., Gordon, S., Bichler, M., Meier, T., &#38; Zrenner, A. (2010). Coherent control of a single exciton qubit by optoelectronic manipulation. <i>Nature Photonics</i>, <i>4</i>(8), 545–548. <a href=\"https://doi.org/10.1038/nphoton.2010.124\">https://doi.org/10.1038/nphoton.2010.124</a>","mla":"Michaelis de Vasconcellos, S., et al. “Coherent Control of a Single Exciton Qubit by Optoelectronic Manipulation.” <i>Nature Photonics</i>, vol. 4, no. 8, Springer Nature, 2010, pp. 545–48, doi:<a href=\"https://doi.org/10.1038/nphoton.2010.124\">10.1038/nphoton.2010.124</a>.","bibtex":"@article{Michaelis de Vasconcellos_Gordon_Bichler_Meier_Zrenner_2010, title={Coherent control of a single exciton qubit by optoelectronic manipulation}, volume={4}, DOI={<a href=\"https://doi.org/10.1038/nphoton.2010.124\">10.1038/nphoton.2010.124</a>}, number={8}, journal={Nature Photonics}, publisher={Springer Nature}, author={Michaelis de Vasconcellos, S. and Gordon, S. and Bichler, M. and Meier, Torsten and Zrenner, Artur}, year={2010}, pages={545–548} }","short":"S. Michaelis de Vasconcellos, S. Gordon, M. Bichler, T. Meier, A. Zrenner, Nature Photonics 4 (2010) 545–548."},"intvolume":"         4","page":"545-548","date_updated":"2025-12-16T11:22:52Z","author":[{"first_name":"S.","full_name":"Michaelis de Vasconcellos, S.","last_name":"Michaelis de Vasconcellos"},{"last_name":"Gordon","full_name":"Gordon, S.","first_name":"S."},{"full_name":"Bichler, M.","last_name":"Bichler","first_name":"M."},{"first_name":"Torsten","full_name":"Meier, Torsten","id":"344","orcid":"0000-0001-8864-2072","last_name":"Meier"},{"last_name":"Zrenner","orcid":"0000-0002-5190-0944","full_name":"Zrenner, Artur","id":"606","first_name":"Artur"}],"volume":4,"doi":"10.1038/nphoton.2010.124"},{"issue":"10","year":"2010","publisher":"Elsevier BV","date_created":"2018-08-27T10:03:35Z","title":"Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator","publication":"Physica E: Low-dimensional Systems and Nanostructures","abstract":[{"lang":"eng","text":"GaAs-based semiconductor microdisks with high quality whispering gallery modes (Q44000) have been fabricated.A layer of self-organized InAs quantumdots (QDs) served as a light source to feed the optical modes at room temperature. In order to achieve frequency tuning of the optical modes, the microdisk devices have been immersed in 4 – cyano – 4´-pentylbiphenyl (5CB), a liquid crystal(LC) with a nematic phase below the clearing temperature of  TC≈34°C .We have studied the device performance in the temperature rangeof T=20-50°C, in order to investigate the influence of the nematic–isotropic phase transition on the optical modes. Moreover,we havea pplied an AC electric field to the device,which leads in the nematic phase to a reorientation of the anisotropic dielectric tensor of the liquid crystal.This electrical anisotropy can be used to achieve electrical tunability of the optical modes.Using the finite-difference time domain (FDTD) technique with an anisotropic material model, we are able to describe the influence of the liquid crystal qualitatively."}],"file":[{"date_created":"2018-08-27T10:06:57Z","creator":"hclaudia","date_updated":"2018-08-27T10:06:57Z","file_id":"4124","file_name":"2010 Piegdon,Offer,Lork,Urbanski,Hoischen,Kitzerwo, Declair,Förstner_Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator.pdf","access_level":"closed","file_size":403248,"content_type":"application/pdf","relation":"main_file","success":1}],"keyword":["tet_topic_qd","tet_topic_microdisk"],"ddc":["530"],"language":[{"iso":"eng"}],"publication_identifier":{"issn":["1386-9477"]},"has_accepted_license":"1","publication_status":"published","page":"2552-2555","intvolume":"        42","citation":{"ama":"Piegdon KA, Offer M, Lorke A, et al. Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator. <i>Physica E: Low-dimensional Systems and Nanostructures</i>. 2010;42(10):2552-2555. doi:<a href=\"https://doi.org/10.1016/j.physe.2009.12.051\">10.1016/j.physe.2009.12.051</a>","ieee":"K. A. Piegdon <i>et al.</i>, “Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator,” <i>Physica E: Low-dimensional Systems and Nanostructures</i>, vol. 42, no. 10, pp. 2552–2555, 2010, doi: <a href=\"https://doi.org/10.1016/j.physe.2009.12.051\">10.1016/j.physe.2009.12.051</a>.","chicago":"Piegdon, Karoline A., Matthias Offer, Axel Lorke, Martin Urbanski, Andreas Hoischen, Heinz-Siegfried Kitzerow, Stefan Declair, et al. “Self-Assembled Quantum Dots in a Liquid-Crystal-Tunable Microdisk Resonator.” <i>Physica E: Low-Dimensional Systems and Nanostructures</i> 42, no. 10 (2010): 2552–55. <a href=\"https://doi.org/10.1016/j.physe.2009.12.051\">https://doi.org/10.1016/j.physe.2009.12.051</a>.","mla":"Piegdon, Karoline A., et al. “Self-Assembled Quantum Dots in a Liquid-Crystal-Tunable Microdisk Resonator.” <i>Physica E: Low-Dimensional Systems and Nanostructures</i>, vol. 42, no. 10, Elsevier BV, 2010, pp. 2552–55, doi:<a href=\"https://doi.org/10.1016/j.physe.2009.12.051\">10.1016/j.physe.2009.12.051</a>.","bibtex":"@article{Piegdon_Offer_Lorke_Urbanski_Hoischen_Kitzerow_Declair_Förstner_Meier_Reuter_et al._2010, title={Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator}, volume={42}, DOI={<a href=\"https://doi.org/10.1016/j.physe.2009.12.051\">10.1016/j.physe.2009.12.051</a>}, number={10}, journal={Physica E: Low-dimensional Systems and Nanostructures}, publisher={Elsevier BV}, author={Piegdon, Karoline A. and Offer, Matthias and Lorke, Axel and Urbanski, Martin and Hoischen, Andreas and Kitzerow, Heinz-Siegfried and Declair, Stefan and Förstner, Jens and Meier, Torsten and Reuter, Dirk and et al.}, year={2010}, pages={2552–2555} }","short":"K.A. Piegdon, M. Offer, A. Lorke, M. Urbanski, A. Hoischen, H.-S. Kitzerow, S. Declair, J. Förstner, T. Meier, D. Reuter, A.D. Wieck, C. Meier, Physica E: Low-Dimensional Systems and Nanostructures 42 (2010) 2552–2555.","apa":"Piegdon, K. A., Offer, M., Lorke, A., Urbanski, M., Hoischen, A., Kitzerow, H.-S., Declair, S., Förstner, J., Meier, T., Reuter, D., Wieck, A. D., &#38; Meier, C. (2010). Self-assembled quantum dots in a liquid-crystal-tunable microdisk resonator. <i>Physica E: Low-Dimensional Systems and Nanostructures</i>, <i>42</i>(10), 2552–2555. <a href=\"https://doi.org/10.1016/j.physe.2009.12.051\">https://doi.org/10.1016/j.physe.2009.12.051</a>"},"date_updated":"2025-12-16T11:32:03Z","volume":42,"author":[{"full_name":"Piegdon, Karoline A.","last_name":"Piegdon","first_name":"Karoline A."},{"full_name":"Offer, Matthias","last_name":"Offer","first_name":"Matthias"},{"first_name":"Axel","full_name":"Lorke, Axel","last_name":"Lorke"},{"first_name":"Martin","last_name":"Urbanski","full_name":"Urbanski, Martin"},{"first_name":"Andreas","last_name":"Hoischen","full_name":"Hoischen, Andreas"},{"id":"254","full_name":"Kitzerow, Heinz-Siegfried","last_name":"Kitzerow","first_name":"Heinz-Siegfried"},{"full_name":"Declair, Stefan","last_name":"Declair","first_name":"Stefan"},{"orcid":"0000-0001-7059-9862","last_name":"Förstner","full_name":"Förstner, Jens","id":"158","first_name":"Jens"},{"full_name":"Meier, Torsten","id":"344","orcid":"0000-0001-8864-2072","last_name":"Meier","first_name":"Torsten"},{"first_name":"Dirk","id":"37763","full_name":"Reuter, Dirk","last_name":"Reuter"},{"first_name":"Andreas D.","last_name":"Wieck","full_name":"Wieck, Andreas D."},{"orcid":"https://orcid.org/0000-0002-3787-3572","last_name":"Meier","id":"20798","full_name":"Meier, Cedrik","first_name":"Cedrik"}],"doi":"10.1016/j.physe.2009.12.051","type":"journal_article","status":"public","_id":"4123","department":[{"_id":"15"},{"_id":"230"},{"_id":"2"},{"_id":"293"},{"_id":"292"},{"_id":"35"},{"_id":"287"},{"_id":"313"},{"_id":"170"}],"user_id":"16199","article_type":"original","file_date_updated":"2018-08-27T10:06:57Z"},{"ddc":["530"],"keyword":["tet_topic_qw"],"language":[{"iso":"eng"}],"publication":"Physical Review Letters","abstract":[{"text":"It is demonstrated that valence-band mixing in GaAs quantum wells tremendously modifies electronic\r\ntransport. A coherent control scheme in which ultrafast currents are optically injected into undoped GaAs\r\nquantum wells upon excitation with femtosecond laser pulses is employed. An oscillatory dependence of\r\nthe injection current amplitude and direction on the excitation photon energy is observed. A microscopic\r\ntheoretical analysis shows that this current reversal is caused by the coupling of the light- and heavy-hole\r\nbands and that the hole currents dominate the overall current response. These surprising consequences of\r\nband mixing illuminate fundamental physics as they are unique for experiments which are able to monitor\r\nelectronic transport resulting from carriers with relatively large momenta.","lang":"eng"}],"file":[{"content_type":"application/pdf","relation":"main_file","success":1,"date_created":"2018-08-28T08:41:56Z","creator":"hclaudia","date_updated":"2018-08-28T08:41:56Z","file_name":"2010 Priyadarshi,Racu,Pierz,Siegner,Bieler,Duc,Förstner,Meier T_Reversal of coherently controlled ultrafast photocurrents by band mixing in undoped GaAs quantum wells.pdf","file_id":"4170","access_level":"closed","file_size":447293}],"publisher":"American Physical Society (APS)","date_created":"2018-08-28T08:40:16Z","title":"Reversal of Coherently Controlled Ultrafast Photocurrents by Band Mixing in Undoped GaAs Quantum Wells","issue":"21","year":"2010","project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"4169","user_id":"16199","department":[{"_id":"15"},{"_id":"293"},{"_id":"170"},{"_id":"230"},{"_id":"35"},{"_id":"34"},{"_id":"61"},{"_id":"27"}],"article_number":"217401","article_type":"original","file_date_updated":"2018-08-28T08:41:56Z","type":"journal_article","status":"public","date_updated":"2025-12-16T11:32:36Z","author":[{"first_name":"S.","full_name":"Priyadarshi, S.","last_name":"Priyadarshi"},{"last_name":"Racu","full_name":"Racu, A. M.","first_name":"A. M."},{"first_name":"K.","last_name":"Pierz","full_name":"Pierz, K."},{"first_name":"U.","last_name":"Siegner","full_name":"Siegner, U."},{"first_name":"M.","last_name":"Bieler","full_name":"Bieler, M."},{"first_name":"H. T.","full_name":"Duc, H. T.","last_name":"Duc"},{"first_name":"Jens","last_name":"Förstner","orcid":"0000-0001-7059-9862","id":"158","full_name":"Förstner, Jens"},{"first_name":"Torsten","last_name":"Meier","orcid":"0000-0001-8864-2072","full_name":"Meier, Torsten","id":"344"}],"volume":104,"doi":"10.1103/physrevlett.104.217401","publication_status":"published","publication_identifier":{"issn":["0031-9007","1079-7114"]},"has_accepted_license":"1","citation":{"ama":"Priyadarshi S, Racu AM, Pierz K, et al. Reversal of Coherently Controlled Ultrafast Photocurrents by Band Mixing in Undoped GaAs Quantum Wells. <i>Physical Review Letters</i>. 2010;104(21). doi:<a href=\"https://doi.org/10.1103/physrevlett.104.217401\">10.1103/physrevlett.104.217401</a>","chicago":"Priyadarshi, S., A. M. Racu, K. Pierz, U. Siegner, M. Bieler, H. T. Duc, Jens Förstner, and Torsten Meier. “Reversal of Coherently Controlled Ultrafast Photocurrents by Band Mixing in Undoped GaAs Quantum Wells.” <i>Physical Review Letters</i> 104, no. 21 (2010). <a href=\"https://doi.org/10.1103/physrevlett.104.217401\">https://doi.org/10.1103/physrevlett.104.217401</a>.","ieee":"S. Priyadarshi <i>et al.</i>, “Reversal of Coherently Controlled Ultrafast Photocurrents by Band Mixing in Undoped GaAs Quantum Wells,” <i>Physical Review Letters</i>, vol. 104, no. 21, Art. no. 217401, 2010, doi: <a href=\"https://doi.org/10.1103/physrevlett.104.217401\">10.1103/physrevlett.104.217401</a>.","bibtex":"@article{Priyadarshi_Racu_Pierz_Siegner_Bieler_Duc_Förstner_Meier_2010, title={Reversal of Coherently Controlled Ultrafast Photocurrents by Band Mixing in Undoped GaAs Quantum Wells}, volume={104}, DOI={<a href=\"https://doi.org/10.1103/physrevlett.104.217401\">10.1103/physrevlett.104.217401</a>}, number={21217401}, journal={Physical Review Letters}, publisher={American Physical Society (APS)}, author={Priyadarshi, S. and Racu, A. M. and Pierz, K. and Siegner, U. and Bieler, M. and Duc, H. T. and Förstner, Jens and Meier, Torsten}, year={2010} }","mla":"Priyadarshi, S., et al. “Reversal of Coherently Controlled Ultrafast Photocurrents by Band Mixing in Undoped GaAs Quantum Wells.” <i>Physical Review Letters</i>, vol. 104, no. 21, 217401, American Physical Society (APS), 2010, doi:<a href=\"https://doi.org/10.1103/physrevlett.104.217401\">10.1103/physrevlett.104.217401</a>.","short":"S. Priyadarshi, A.M. Racu, K. Pierz, U. Siegner, M. Bieler, H.T. Duc, J. Förstner, T. Meier, Physical Review Letters 104 (2010).","apa":"Priyadarshi, S., Racu, A. M., Pierz, K., Siegner, U., Bieler, M., Duc, H. T., Förstner, J., &#38; Meier, T. (2010). Reversal of Coherently Controlled Ultrafast Photocurrents by Band Mixing in Undoped GaAs Quantum Wells. <i>Physical Review Letters</i>, <i>104</i>(21), Article 217401. <a href=\"https://doi.org/10.1103/physrevlett.104.217401\">https://doi.org/10.1103/physrevlett.104.217401</a>"},"intvolume":"       104"},{"publication":"2010 IEEE Antennas and Propagation Society International Symposium","abstract":[{"lang":"eng","text":"The electromagnetic field in the vicinity of sharp edges needs a special treatment in numeric calculation whenever accurate, fast converging results are necessary. One of the fundamental works concerning field singularities has been proposed in 1972 [1] and states that the electromagnetic energy density must be integrable over any finite\r\ndomain, even if this domain contains singularities. It is shown, that the magnetic field \u0002H(\u0003, ϕ) and electric field \u0002E(\u0003, ϕ) are proportional to ∝ \u0003(t−1) for \u0003 → 0. The variable \u0003 is the distance to the edge and t has to fulfill the integrability condition and thus is restricted to 0 < t < 1. This result is often used to reduce the error corresponding to the singularity without increasing the numerical effort [2 - 5]. For this purpose, a correction factor K is estimated by inserting the proportionality into the wave equation. It is shown, that this method improves the accuracy of the result significantly, however the order of convergence is often not studied. In [4] a method to modify the material parameters in order to use analytic results to improve the numeric calculation is presented. In this contribution we will - inspired by the scheme given in [4] - develop a new method to estimate a correction factor for perfect conducting materials (PEC) and demonstrate the improvement of the results compared to the standard edge correction. Therefore analytic results (comparable to [1]) are consequently merged with the scheme in [4]. The main goal of this work is the calculation of the second harmonic generation (SHG) in the wave response of so-called metamaterials [6]. Frequently these structures\r\ncontain sharp metallic edges with field singularities at the interfaces which have a strong impact on the SHG signals. Thus, an accurate simulation of singularities is highly important. However, the following approach can also be applied to many other setups, and one of them is shown in the example below."}],"file":[{"content_type":"application/pdf","relation":"main_file","creator":"hclaudia","date_created":"2018-08-28T08:36:44Z","date_updated":"2018-09-04T19:31:42Z","file_id":"4168","file_name":"2010 Classen,Förstner, Meier T,Schuhmann_Enhanced FDTD edge correction for nonlinear effects calculation.pdf","access_level":"open_access","file_size":209412}],"keyword":["tet_topic_numerics"],"ddc":["530"],"language":[{"iso":"eng"}],"year":"2010","publisher":"IEEE","date_created":"2018-08-28T08:34:52Z","title":"Enhanced FDTD edge correction for nonlinear effects calculation","type":"conference","urn":"41677","status":"public","_id":"4167","department":[{"_id":"61"},{"_id":"15"},{"_id":"293"},{"_id":"170"},{"_id":"230"},{"_id":"35"},{"_id":"34"}],"user_id":"16199","article_number":"11515155 ","file_date_updated":"2018-09-04T19:31:42Z","publication_identifier":{"isbn":["9781424449675","9781424449682"]},"has_accepted_license":"1","publication_status":"published","citation":{"apa":"Classen, C., Förstner, J., Meier, T., &#38; Schuhmann, R. (2010). Enhanced FDTD edge correction for nonlinear effects calculation. <i>2010 IEEE Antennas and Propagation Society International Symposium</i>, Article 11515155. 2010 IEEE international Symposium Antennas, Toronto, ON, Canada. <a href=\"https://doi.org/10.1109/aps.2010.5562017\">https://doi.org/10.1109/aps.2010.5562017</a>","mla":"Classen, C., et al. “Enhanced FDTD Edge Correction for Nonlinear Effects Calculation.” <i>2010 IEEE Antennas and Propagation Society International Symposium</i>, 11515155, IEEE, 2010, doi:<a href=\"https://doi.org/10.1109/aps.2010.5562017\">10.1109/aps.2010.5562017</a>.","bibtex":"@inproceedings{Classen_Förstner_Meier_Schuhmann_2010, title={Enhanced FDTD edge correction for nonlinear effects calculation}, DOI={<a href=\"https://doi.org/10.1109/aps.2010.5562017\">10.1109/aps.2010.5562017</a>}, number={11515155}, booktitle={2010 IEEE Antennas and Propagation Society International Symposium}, publisher={IEEE}, author={Classen, C and Förstner, Jens and Meier, Torsten and Schuhmann, R}, year={2010} }","short":"C. Classen, J. Förstner, T. Meier, R. Schuhmann, in: 2010 IEEE Antennas and Propagation Society International Symposium, IEEE, 2010.","chicago":"Classen, C, Jens Förstner, Torsten Meier, and R Schuhmann. “Enhanced FDTD Edge Correction for Nonlinear Effects Calculation.” In <i>2010 IEEE Antennas and Propagation Society International Symposium</i>. IEEE, 2010. <a href=\"https://doi.org/10.1109/aps.2010.5562017\">https://doi.org/10.1109/aps.2010.5562017</a>.","ieee":"C. Classen, J. Förstner, T. Meier, and R. Schuhmann, “Enhanced FDTD edge correction for nonlinear effects calculation,” presented at the 2010 IEEE international Symposium Antennas, Toronto, ON, Canada, 2010, doi: <a href=\"https://doi.org/10.1109/aps.2010.5562017\">10.1109/aps.2010.5562017</a>.","ama":"Classen C, Förstner J, Meier T, Schuhmann R. Enhanced FDTD edge correction for nonlinear effects calculation. In: <i>2010 IEEE Antennas and Propagation Society International Symposium</i>. IEEE; 2010. doi:<a href=\"https://doi.org/10.1109/aps.2010.5562017\">10.1109/aps.2010.5562017</a>"},"date_updated":"2025-12-16T12:35:39Z","oa":"1","author":[{"last_name":"Classen","full_name":"Classen, C","first_name":"C"},{"orcid":"0000-0001-7059-9862","last_name":"Förstner","id":"158","full_name":"Förstner, Jens","first_name":"Jens"},{"first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","full_name":"Meier, Torsten","id":"344"},{"first_name":"R","last_name":"Schuhmann","full_name":"Schuhmann, R"}],"conference":{"location":"Toronto, ON, Canada","end_date":"2010-07-17","start_date":"2010-07-11","name":"2010 IEEE international Symposium Antennas"},"doi":"10.1109/aps.2010.5562017"},{"file_date_updated":"2018-09-04T20:02:01Z","article_number":"7946","article_type":"original","user_id":"16199","department":[{"_id":"15"},{"_id":"287"},{"_id":"293"},{"_id":"292"},{"_id":"35"},{"_id":"230"},{"_id":"313"},{"_id":"170"},{"_id":"27"},{"_id":"34"},{"_id":"61"}],"project":[{"_id":"52","name":"Computing Resources Provided by the Paderborn Center for Parallel Computing"},{"name":"PC2: Computing Resources Provided by the Paderborn Center for Parallel Computing","_id":"52"}],"_id":"4172","status":"public","urn":"41725","type":"journal_article","doi":"10.1364/oe.18.007946","author":[{"last_name":"Piegdon","full_name":"Piegdon, Karoline A.","first_name":"Karoline A."},{"first_name":"Stefan","full_name":"Declair, Stefan","last_name":"Declair"},{"id":"158","full_name":"Förstner, Jens","orcid":"0000-0001-7059-9862","last_name":"Förstner","first_name":"Jens"},{"first_name":"Torsten","orcid":"0000-0001-8864-2072","last_name":"Meier","id":"344","full_name":"Meier, Torsten"},{"first_name":"Heiner","last_name":"Matthias","full_name":"Matthias, Heiner"},{"full_name":"Urbanski, Martin","last_name":"Urbanski","first_name":"Martin"},{"first_name":"Heinz-Siegfried","last_name":"Kitzerow","full_name":"Kitzerow, Heinz-Siegfried","id":"254"},{"last_name":"Reuter","id":"37763","full_name":"Reuter, Dirk","first_name":"Dirk"},{"last_name":"Wieck","full_name":"Wieck, Andreas D.","first_name":"Andreas D."},{"last_name":"Lorke","full_name":"Lorke, Axel","first_name":"Axel"},{"full_name":"Meier, Cedrik","id":"20798","last_name":"Meier","orcid":"https://orcid.org/0000-0002-3787-3572","first_name":"Cedrik"}],"volume":18,"date_updated":"2025-12-16T16:44:44Z","oa":"1","citation":{"apa":"Piegdon, K. A., Declair, S., Förstner, J., Meier, T., Matthias, H., Urbanski, M., Kitzerow, H.-S., Reuter, D., Wieck, A. D., Lorke, A., &#38; Meier, C. (2010). Tuning quantum-dot based photonic devices with liquid crystals. <i>Optics Express</i>, <i>18</i>(8), Article 7946. <a href=\"https://doi.org/10.1364/oe.18.007946\">https://doi.org/10.1364/oe.18.007946</a>","short":"K.A. Piegdon, S. Declair, J. Förstner, T. Meier, H. Matthias, M. Urbanski, H.-S. Kitzerow, D. Reuter, A.D. Wieck, A. Lorke, C. Meier, Optics Express 18 (2010).","bibtex":"@article{Piegdon_Declair_Förstner_Meier_Matthias_Urbanski_Kitzerow_Reuter_Wieck_Lorke_et al._2010, title={Tuning quantum-dot based photonic devices with liquid crystals}, volume={18}, DOI={<a href=\"https://doi.org/10.1364/oe.18.007946\">10.1364/oe.18.007946</a>}, number={87946}, journal={Optics Express}, publisher={The Optical Society}, author={Piegdon, Karoline A. and Declair, Stefan and Förstner, Jens and Meier, Torsten and Matthias, Heiner and Urbanski, Martin and Kitzerow, Heinz-Siegfried and Reuter, Dirk and Wieck, Andreas D. and Lorke, Axel and et al.}, year={2010} }","mla":"Piegdon, Karoline A., et al. “Tuning Quantum-Dot Based Photonic Devices with Liquid Crystals.” <i>Optics Express</i>, vol. 18, no. 8, 7946, The Optical Society, 2010, doi:<a href=\"https://doi.org/10.1364/oe.18.007946\">10.1364/oe.18.007946</a>.","ama":"Piegdon KA, Declair S, Förstner J, et al. Tuning quantum-dot based photonic devices with liquid crystals. <i>Optics Express</i>. 2010;18(8). doi:<a href=\"https://doi.org/10.1364/oe.18.007946\">10.1364/oe.18.007946</a>","ieee":"K. A. Piegdon <i>et al.</i>, “Tuning quantum-dot based photonic devices with liquid crystals,” <i>Optics Express</i>, vol. 18, no. 8, Art. no. 7946, 2010, doi: <a href=\"https://doi.org/10.1364/oe.18.007946\">10.1364/oe.18.007946</a>.","chicago":"Piegdon, Karoline A., Stefan Declair, Jens Förstner, Torsten Meier, Heiner Matthias, Martin Urbanski, Heinz-Siegfried Kitzerow, et al. “Tuning Quantum-Dot Based Photonic Devices with Liquid Crystals.” <i>Optics Express</i> 18, no. 8 (2010). <a href=\"https://doi.org/10.1364/oe.18.007946\">https://doi.org/10.1364/oe.18.007946</a>."},"intvolume":"        18","publication_status":"published","has_accepted_license":"1","publication_identifier":{"issn":["1094-4087"]},"language":[{"iso":"eng"}],"ddc":["530"],"keyword":["tet_topic_qd","tet_topic_microdisk"],"file":[{"relation":"main_file","content_type":"application/pdf","file_id":"4173","access_level":"open_access","file_name":"2010 Piegdon,Declair,Förstner,Meier T,Matthias,Urbanski,Kitzerow,Reuter,Wieck,Lorcke,Meier C_Tuning quantum-dot based photonic devices with liquid crystals.pdf","file_size":627755,"creator":"hclaudia","date_created":"2018-08-28T08:52:50Z","date_updated":"2018-09-04T20:02:01Z"}],"abstract":[{"text":"Microdisks made from GaAs with embedded InAs quantum dots are immersed in the liquid crystal 4-cyano-4’-pentylbiphenyl (5CB). The quantum dots serve as emitters feeding the optical modes of the photonic cavity. By changing temperature, the liquid crystal undergoes a phase transition from the isotropic to the nematic state, which can be used\r\nas an effective tuning mechanism of the photonic modes of the cavity. In the nematic state, the uniaxial electrical anisotropy of the liquid crystal molecules can be exploited for orienting the material in an electric field,\r\nthus externally controlling the birefringence of the material. Using this effect, an electric field induced tuning of the modes is achieved. Numerical simulations using the finite-differences time-domain (FDTD) technique\r\nemploying an anisotropic dielectric medium allow to understand the alignment of the liquid crystal molecules on the surface of the microdisk resonator.","lang":"eng"}],"publication":"Optics Express","title":"Tuning quantum-dot based photonic devices with liquid crystals","date_created":"2018-08-28T08:50:06Z","publisher":"The Optical Society","year":"2010","issue":"8"},{"type":"journal_article","publication":"Physical Review B","status":"public","_id":"1734","user_id":"30525","department":[{"_id":"15"},{"_id":"230"}],"publication_status":"published","publication_identifier":{"issn":["1098-0121","1550-235X"]},"issue":"19","year":"2009","citation":{"apa":"Zentgraf, T., Zhang, S., Oulton, R. F., &#38; Zhang, X. (2009). Ultranarrow coupling-induced transparency bands in hybrid plasmonic systems. <i>Physical Review B</i>, <i>80</i>(19). <a href=\"https://doi.org/10.1103/physrevb.80.195415\">https://doi.org/10.1103/physrevb.80.195415</a>","short":"T. Zentgraf, S. Zhang, R.F. Oulton, X. Zhang, Physical Review B 80 (2009).","bibtex":"@article{Zentgraf_Zhang_Oulton_Zhang_2009, title={Ultranarrow coupling-induced transparency bands in hybrid plasmonic systems}, volume={80}, DOI={<a href=\"https://doi.org/10.1103/physrevb.80.195415\">10.1103/physrevb.80.195415</a>}, number={19}, journal={Physical Review B}, publisher={American Physical Society (APS)}, author={Zentgraf, Thomas and Zhang, Shuang and Oulton, Rupert F. and Zhang, Xiang}, year={2009} }","mla":"Zentgraf, Thomas, et al. “Ultranarrow Coupling-Induced Transparency Bands in Hybrid Plasmonic Systems.” <i>Physical Review B</i>, vol. 80, no. 19, American Physical Society (APS), 2009, doi:<a href=\"https://doi.org/10.1103/physrevb.80.195415\">10.1103/physrevb.80.195415</a>.","ieee":"T. Zentgraf, S. Zhang, R. F. Oulton, and X. Zhang, “Ultranarrow coupling-induced transparency bands in hybrid plasmonic systems,” <i>Physical Review B</i>, vol. 80, no. 19, 2009.","chicago":"Zentgraf, Thomas, Shuang Zhang, Rupert F. Oulton, and Xiang Zhang. “Ultranarrow Coupling-Induced Transparency Bands in Hybrid Plasmonic Systems.” <i>Physical Review B</i> 80, no. 19 (2009). <a href=\"https://doi.org/10.1103/physrevb.80.195415\">https://doi.org/10.1103/physrevb.80.195415</a>.","ama":"Zentgraf T, Zhang S, Oulton RF, Zhang X. Ultranarrow coupling-induced transparency bands in hybrid plasmonic systems. <i>Physical Review B</i>. 2009;80(19). doi:<a href=\"https://doi.org/10.1103/physrevb.80.195415\">10.1103/physrevb.80.195415</a>"},"intvolume":"        80","publisher":"American Physical Society (APS)","date_updated":"2022-01-06T06:53:08Z","author":[{"id":"30525","full_name":"Zentgraf, Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","first_name":"Thomas"},{"last_name":"Zhang","full_name":"Zhang, Shuang","first_name":"Shuang"},{"first_name":"Rupert F.","full_name":"Oulton, Rupert F.","last_name":"Oulton"},{"first_name":"Xiang","full_name":"Zhang, Xiang","last_name":"Zhang"}],"date_created":"2018-03-23T12:33:33Z","volume":80,"title":"Ultranarrow coupling-induced transparency bands in hybrid plasmonic systems","doi":"10.1103/physrevb.80.195415"},{"date_updated":"2022-01-06T06:53:08Z","publisher":"Springer Nature","volume":461,"author":[{"first_name":"Rupert F.","full_name":"Oulton, Rupert F.","last_name":"Oulton"},{"first_name":"Volker J.","full_name":"Sorger, Volker J.","last_name":"Sorger"},{"first_name":"Thomas","last_name":"Zentgraf","orcid":"0000-0002-8662-1101","id":"30525","full_name":"Zentgraf, Thomas"},{"first_name":"Ren-Min","full_name":"Ma, Ren-Min","last_name":"Ma"},{"full_name":"Gladden, Christopher","last_name":"Gladden","first_name":"Christopher"},{"first_name":"Lun","full_name":"Dai, Lun","last_name":"Dai"},{"first_name":"Guy","last_name":"Bartal","full_name":"Bartal, Guy"},{"first_name":"Xiang","last_name":"Zhang","full_name":"Zhang, Xiang"}],"date_created":"2018-03-23T12:35:58Z","title":"Plasmon lasers at deep subwavelength scale","doi":"10.1038/nature08364","publication_identifier":{"issn":["0028-0836","1476-4687"]},"publication_status":"published","issue":"7264","year":"2009","intvolume":"       461","page":"629-632","citation":{"ama":"Oulton RF, Sorger VJ, Zentgraf T, et al. Plasmon lasers at deep subwavelength scale. <i>Nature</i>. 2009;461(7264):629-632. doi:<a href=\"https://doi.org/10.1038/nature08364\">10.1038/nature08364</a>","ieee":"R. F. Oulton <i>et al.</i>, “Plasmon lasers at deep subwavelength scale,” <i>Nature</i>, vol. 461, no. 7264, pp. 629–632, 2009.","chicago":"Oulton, Rupert F., Volker J. Sorger, Thomas Zentgraf, Ren-Min Ma, Christopher Gladden, Lun Dai, Guy Bartal, and Xiang Zhang. “Plasmon Lasers at Deep Subwavelength Scale.” <i>Nature</i> 461, no. 7264 (2009): 629–32. <a href=\"https://doi.org/10.1038/nature08364\">https://doi.org/10.1038/nature08364</a>.","apa":"Oulton, R. F., Sorger, V. J., Zentgraf, T., Ma, R.-M., Gladden, C., Dai, L., … Zhang, X. (2009). Plasmon lasers at deep subwavelength scale. <i>Nature</i>, <i>461</i>(7264), 629–632. <a href=\"https://doi.org/10.1038/nature08364\">https://doi.org/10.1038/nature08364</a>","mla":"Oulton, Rupert F., et al. “Plasmon Lasers at Deep Subwavelength Scale.” <i>Nature</i>, vol. 461, no. 7264, Springer Nature, 2009, pp. 629–32, doi:<a href=\"https://doi.org/10.1038/nature08364\">10.1038/nature08364</a>.","short":"R.F. Oulton, V.J. Sorger, T. Zentgraf, R.-M. Ma, C. Gladden, L. Dai, G. Bartal, X. Zhang, Nature 461 (2009) 629–632.","bibtex":"@article{Oulton_Sorger_Zentgraf_Ma_Gladden_Dai_Bartal_Zhang_2009, title={Plasmon lasers at deep subwavelength scale}, volume={461}, DOI={<a href=\"https://doi.org/10.1038/nature08364\">10.1038/nature08364</a>}, number={7264}, journal={Nature}, publisher={Springer Nature}, author={Oulton, Rupert F. and Sorger, Volker J. and Zentgraf, Thomas and Ma, Ren-Min and Gladden, Christopher and Dai, Lun and Bartal, Guy and Zhang, Xiang}, year={2009}, pages={629–632} }"},"_id":"1735","department":[{"_id":"15"},{"_id":"230"}],"user_id":"30525","publication":"Nature","type":"journal_article","status":"public"},{"status":"public","publication":"Nature Materials","type":"journal_article","department":[{"_id":"15"},{"_id":"230"}],"user_id":"30525","_id":"1736","page":"568-571","intvolume":"         8","citation":{"apa":"Valentine, J., Li, J., Zentgraf, T., Bartal, G., &#38; Zhang, X. (2009). An optical cloak made of dielectrics. <i>Nature Materials</i>, <i>8</i>(7), 568–571. <a href=\"https://doi.org/10.1038/nmat2461\">https://doi.org/10.1038/nmat2461</a>","bibtex":"@article{Valentine_Li_Zentgraf_Bartal_Zhang_2009, title={An optical cloak made of dielectrics}, volume={8}, DOI={<a href=\"https://doi.org/10.1038/nmat2461\">10.1038/nmat2461</a>}, number={7}, journal={Nature Materials}, publisher={Springer Nature}, author={Valentine, Jason and Li, Jensen and Zentgraf, Thomas and Bartal, Guy and Zhang, Xiang}, year={2009}, pages={568–571} }","short":"J. Valentine, J. Li, T. Zentgraf, G. Bartal, X. Zhang, Nature Materials 8 (2009) 568–571.","mla":"Valentine, Jason, et al. “An Optical Cloak Made of Dielectrics.” <i>Nature Materials</i>, vol. 8, no. 7, Springer Nature, 2009, pp. 568–71, doi:<a href=\"https://doi.org/10.1038/nmat2461\">10.1038/nmat2461</a>.","ama":"Valentine J, Li J, Zentgraf T, Bartal G, Zhang X. An optical cloak made of dielectrics. <i>Nature Materials</i>. 2009;8(7):568-571. doi:<a href=\"https://doi.org/10.1038/nmat2461\">10.1038/nmat2461</a>","ieee":"J. Valentine, J. Li, T. Zentgraf, G. Bartal, and X. Zhang, “An optical cloak made of dielectrics,” <i>Nature Materials</i>, vol. 8, no. 7, pp. 568–571, 2009.","chicago":"Valentine, Jason, Jensen Li, Thomas Zentgraf, Guy Bartal, and Xiang Zhang. “An Optical Cloak Made of Dielectrics.” <i>Nature Materials</i> 8, no. 7 (2009): 568–71. <a href=\"https://doi.org/10.1038/nmat2461\">https://doi.org/10.1038/nmat2461</a>."},"year":"2009","issue":"7","publication_identifier":{"issn":["1476-1122","1476-4660"]},"publication_status":"published","doi":"10.1038/nmat2461","title":"An optical cloak made of dielectrics","volume":8,"date_created":"2018-03-23T12:36:19Z","author":[{"last_name":"Valentine","full_name":"Valentine, Jason","first_name":"Jason"},{"last_name":"Li","full_name":"Li, Jensen","first_name":"Jensen"},{"first_name":"Thomas","full_name":"Zentgraf, Thomas","id":"30525","last_name":"Zentgraf","orcid":"0000-0002-8662-1101"},{"first_name":"Guy","full_name":"Bartal, Guy","last_name":"Bartal"},{"first_name":"Xiang","last_name":"Zhang","full_name":"Zhang, Xiang"}],"publisher":"Springer Nature","date_updated":"2022-01-06T06:53:09Z"},{"publisher":"AIP Publishing","date_updated":"2022-01-06T07:03:48Z","volume":94,"date_created":"2019-02-21T13:28:29Z","author":[{"last_name":"Buchholz","full_name":"Buchholz, S. S.","first_name":"S. S."},{"first_name":"S. F.","full_name":"Fischer, S. F.","last_name":"Fischer"},{"last_name":"Kunze","full_name":"Kunze, U.","first_name":"U."},{"last_name":"Reuter","id":"37763","full_name":"Reuter, Dirk","first_name":"Dirk"},{"last_name":"Wieck","full_name":"Wieck, A. D.","first_name":"A. D."}],"title":"Nonlocal Aharonov–Bohm conductance oscillations in an asymmetric quantum ring","doi":"10.1063/1.3069281","publication_identifier":{"issn":["0003-6951","1077-3118"]},"publication_status":"published","issue":"2","year":"2009","intvolume":"        94","citation":{"mla":"Buchholz, S. S., et al. “Nonlocal Aharonov–Bohm Conductance Oscillations in an Asymmetric Quantum Ring.” <i>Applied Physics Letters</i>, vol. 94, no. 2, 022107, AIP Publishing, 2009, doi:<a href=\"https://doi.org/10.1063/1.3069281\">10.1063/1.3069281</a>.","short":"S.S. Buchholz, S.F. Fischer, U. Kunze, D. Reuter, A.D. Wieck, Applied Physics Letters 94 (2009).","bibtex":"@article{Buchholz_Fischer_Kunze_Reuter_Wieck_2009, title={Nonlocal Aharonov–Bohm conductance oscillations in an asymmetric quantum ring}, volume={94}, DOI={<a href=\"https://doi.org/10.1063/1.3069281\">10.1063/1.3069281</a>}, number={2022107}, journal={Applied Physics Letters}, publisher={AIP Publishing}, author={Buchholz, S. S. and Fischer, S. F. and Kunze, U. and Reuter, Dirk and Wieck, A. D.}, year={2009} }","apa":"Buchholz, S. S., Fischer, S. F., Kunze, U., Reuter, D., &#38; Wieck, A. D. (2009). Nonlocal Aharonov–Bohm conductance oscillations in an asymmetric quantum ring. <i>Applied Physics Letters</i>, <i>94</i>(2). <a href=\"https://doi.org/10.1063/1.3069281\">https://doi.org/10.1063/1.3069281</a>","ama":"Buchholz SS, Fischer SF, Kunze U, Reuter D, Wieck AD. Nonlocal Aharonov–Bohm conductance oscillations in an asymmetric quantum ring. <i>Applied Physics Letters</i>. 2009;94(2). doi:<a href=\"https://doi.org/10.1063/1.3069281\">10.1063/1.3069281</a>","ieee":"S. S. Buchholz, S. F. Fischer, U. Kunze, D. Reuter, and A. D. Wieck, “Nonlocal Aharonov–Bohm conductance oscillations in an asymmetric quantum ring,” <i>Applied Physics Letters</i>, vol. 94, no. 2, 2009.","chicago":"Buchholz, S. S., S. F. Fischer, U. Kunze, Dirk Reuter, and A. D. Wieck. “Nonlocal Aharonov–Bohm Conductance Oscillations in an Asymmetric Quantum Ring.” <i>Applied Physics Letters</i> 94, no. 2 (2009). <a href=\"https://doi.org/10.1063/1.3069281\">https://doi.org/10.1063/1.3069281</a>."},"_id":"7973","department":[{"_id":"15"},{"_id":"230"}],"user_id":"42514","article_number":"022107","language":[{"iso":"eng"}],"publication":"Applied Physics Letters","type":"journal_article","status":"public"},{"year":"2009","issue":"1","title":"Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy","publisher":"Informa UK Limited","date_created":"2018-09-20T12:54:14Z","abstract":[{"text":"We present results on ferroelectric micro-domains obtained by confocal second harmonic microscopy. The high potential of this technique is demonstrated by imaging periodic ferroelectric domain structures in the surface of planar X-cut lithium niobate (LN) and in the body of ridges fabricated by plasma etching on X-cut LN as well. In both cases the measured second harmonic signal reveals a strong contrast between inverted and non-inverted domain sections. This enabled a depth-resolved non-destructive tomography of micro-domains in ridge structures in all three dimensions.","lang":"eng"}],"publication":"Ferroelectrics","keyword":["Nonlinear microscopy","ferroelectric micro-domains","confocal imaging","LiNbO3"],"language":[{"iso":"eng"}],"citation":{"chicago":"Berth, Gerhard, Volker Wiedemeier, Klaus-Peter Hüsch, Li Gui, Hui Hu, Wolfgang Sohler, and Artur Zrenner. “Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy.” <i>Ferroelectrics</i> 389, no. 1 (2009): 132–41. <a href=\"https://doi.org/10.1080/00150190902993267\">https://doi.org/10.1080/00150190902993267</a>.","ieee":"G. Berth <i>et al.</i>, “Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy,” <i>Ferroelectrics</i>, vol. 389, no. 1, pp. 132–141, 2009.","ama":"Berth G, Wiedemeier V, Hüsch K-P, et al. Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy. <i>Ferroelectrics</i>. 2009;389(1):132-141. doi:<a href=\"https://doi.org/10.1080/00150190902993267\">10.1080/00150190902993267</a>","apa":"Berth, G., Wiedemeier, V., Hüsch, K.-P., Gui, L., Hu, H., Sohler, W., &#38; Zrenner, A. (2009). Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy. <i>Ferroelectrics</i>, <i>389</i>(1), 132–141. <a href=\"https://doi.org/10.1080/00150190902993267\">https://doi.org/10.1080/00150190902993267</a>","bibtex":"@article{Berth_Wiedemeier_Hüsch_Gui_Hu_Sohler_Zrenner_2009, title={Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy}, volume={389}, DOI={<a href=\"https://doi.org/10.1080/00150190902993267\">10.1080/00150190902993267</a>}, number={1}, journal={Ferroelectrics}, publisher={Informa UK Limited}, author={Berth, Gerhard and Wiedemeier, Volker and Hüsch, Klaus-Peter and Gui, Li and Hu, Hui and Sohler, Wolfgang and Zrenner, Artur}, year={2009}, pages={132–141} }","short":"G. Berth, V. Wiedemeier, K.-P. Hüsch, L. Gui, H. Hu, W. Sohler, A. Zrenner, Ferroelectrics 389 (2009) 132–141.","mla":"Berth, Gerhard, et al. “Imaging of Ferroelectric Micro-Domains in X-Cut Lithium Niobate by Confocal Second Harmonic Microscopy.” <i>Ferroelectrics</i>, vol. 389, no. 1, Informa UK Limited, 2009, pp. 132–41, doi:<a href=\"https://doi.org/10.1080/00150190902993267\">10.1080/00150190902993267</a>."},"intvolume":"       389","page":"132-141","publication_status":"published","publication_identifier":{"issn":["0015-0193","1563-5112"]},"doi":"10.1080/00150190902993267","date_updated":"2022-01-06T07:01:09Z","author":[{"first_name":"Gerhard","full_name":"Berth, Gerhard","id":"53","last_name":"Berth"},{"last_name":"Wiedemeier","full_name":"Wiedemeier, Volker","first_name":"Volker"},{"last_name":"Hüsch","full_name":"Hüsch, Klaus-Peter","first_name":"Klaus-Peter"},{"first_name":"Li","last_name":"Gui","full_name":"Gui, Li"},{"first_name":"Hui","full_name":"Hu, Hui","last_name":"Hu"},{"full_name":"Sohler, Wolfgang","last_name":"Sohler","first_name":"Wolfgang"},{"first_name":"Artur","id":"606","full_name":"Zrenner, Artur","orcid":"0000-0002-5190-0944","last_name":"Zrenner"}],"volume":389,"status":"public","type":"journal_article","article_type":"original","_id":"4553","user_id":"49428","department":[{"_id":"15"},{"_id":"230"},{"_id":"35"}]}]