{"user_id":"16199","citation":{"ama":"Meier T, Ngo C, Priyadarshi S, Duc HT, Bieler M. Terahertz-induced anomalous currents following the optical excitation of excitons in semiconductor quantum wells. In: <i>Ultrafast Phenomena and Nanophotonics XXVII</i>. Vol 12419. SPIE Proceedings. SPIE; 2023. doi:<a href=\"https://doi.org/10.1117/12.2646022\">10.1117/12.2646022</a>","mla":"Meier, Torsten, et al. “Terahertz-Induced Anomalous Currents Following the Optical Excitation of Excitons in Semiconductor Quantum Wells.” <i>Ultrafast Phenomena and Nanophotonics XXVII</i>, vol. 12419, 124190G, SPIE, 2023, doi:<a href=\"https://doi.org/10.1117/12.2646022\">10.1117/12.2646022</a>.","ieee":"T. Meier, C. Ngo, S. Priyadarshi, H. T. Duc, and M. Bieler, “Terahertz-induced anomalous currents following the optical excitation of excitons in semiconductor quantum wells,” in <i>Ultrafast Phenomena and Nanophotonics XXVII</i>, 2023, vol. 12419, doi: <a href=\"https://doi.org/10.1117/12.2646022\">10.1117/12.2646022</a>.","apa":"Meier, T., Ngo, C., Priyadarshi, S., Duc, H. T., &#38; Bieler, M. (2023). Terahertz-induced anomalous currents following the optical excitation of excitons in semiconductor quantum wells. <i>Ultrafast Phenomena and Nanophotonics XXVII</i>, <i>12419</i>, Article 124190G. <a href=\"https://doi.org/10.1117/12.2646022\">https://doi.org/10.1117/12.2646022</a>","bibtex":"@inproceedings{Meier_Ngo_Priyadarshi_Duc_Bieler_2023, series={SPIE Proceedings}, title={Terahertz-induced anomalous currents following the optical excitation of excitons in semiconductor quantum wells}, volume={12419}, DOI={<a href=\"https://doi.org/10.1117/12.2646022\">10.1117/12.2646022</a>}, number={124190G}, booktitle={Ultrafast Phenomena and Nanophotonics XXVII}, publisher={SPIE}, author={Meier, Torsten and Ngo, C. and Priyadarshi, S. and Duc, H. T. and Bieler, M.}, year={2023}, collection={SPIE Proceedings} }","short":"T. Meier, C. Ngo, S. Priyadarshi, H.T. Duc, M. Bieler, in: Ultrafast Phenomena and Nanophotonics XXVII, SPIE, 2023.","chicago":"Meier, Torsten, C. Ngo, S. Priyadarshi, H. T. Duc, and M. Bieler. “Terahertz-Induced Anomalous Currents Following the Optical Excitation of Excitons in Semiconductor Quantum Wells.” In <i>Ultrafast Phenomena and Nanophotonics XXVII</i>, Vol. 12419. SPIE Proceedings. SPIE, 2023. <a href=\"https://doi.org/10.1117/12.2646022\">https://doi.org/10.1117/12.2646022</a>."},"title":"Terahertz-induced anomalous currents following the optical excitation of excitons in semiconductor quantum wells","_id":"43191","department":[{"_id":"293"},{"_id":"15"},{"_id":"170"},{"_id":"35"},{"_id":"230"}],"volume":12419,"author":[{"first_name":"Torsten","orcid":"0000-0001-8864-2072","id":"344","last_name":"Meier","full_name":"Meier, Torsten"},{"first_name":"C.","full_name":"Ngo, C.","last_name":"Ngo"},{"full_name":"Priyadarshi, S.","last_name":"Priyadarshi","first_name":"S."},{"full_name":"Duc, H. T.","last_name":"Duc","first_name":"H. T."},{"full_name":"Bieler, M.","last_name":"Bieler","first_name":"M."}],"publisher":"SPIE","status":"public","intvolume":"     12419","year":"2023","date_updated":"2023-04-20T14:40:44Z","type":"conference","publication":"Ultrafast Phenomena and Nanophotonics XXVII","series_title":"SPIE Proceedings","language":[{"iso":"eng"}],"date_created":"2023-03-29T20:25:19Z","abstract":[{"text":"Anomalous currents refer to electronic currents that flow perpendicularly to the direction of the accelerating electric field. Such anomalous currents can be generated when Terahertz fields are applied after an optical interband excitation of GaAs quantum wells. The underlying processes are investigated by numerical solutions of the semiconductor Bloch equations in the length gauge. Excitonic effects are included by treating the manybody Coulomb interaction in time-dependent Hartree-Fock approximation and additionally also carrier-phonon scattering processes are considered. The band structure and matrix elements are obtained from a 14-band k · p model within the envelope function approximation. The random phase factors of the matrix elements that appear due to the separate numerical diagonalization at each k-point are treated by applying a smooth gauge transformation. We present the macroscopic Berry curvature and anomalous current transients with and without excitonic effects. It is demonstrated that the resonant optical excitation of excitonic resonances can significantly enhance the Berry curvature and the anomalous currents.","lang":"eng"}],"article_number":"124190G","doi":"10.1117/12.2646022","publication_status":"published"}