Spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited GaAs-AlGaAs quantum wells

Spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited GaAs-AlGaAs quantum wells

We calculate the spatial structure of four-component spinor systems of mixed bright and dark exciton condensates in coupled quantum wells. The spin-dependent bright-dark exciton conversion and Dresselhaus spin-orbit coupling is found to generate a rich variety of topological elements. By propagating...

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Main Authors: Matuszewski, M., Liew, Timothy Chi Hin, Rubo, Y. G., Kavokin, A. V.
Other Authors: School of Physical and Mathematical Sciences
Format: Article
Language:English
Published: 2017
Subjects:
Quantum wells
Excitons
Online Access:https://hdl.handle.net/10356/85892
http://hdl.handle.net/10220/43890
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-858922023-02-28T19:23:25Z Spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited GaAs-AlGaAs quantum wells Matuszewski, M. Liew, Timothy Chi Hin Rubo, Y. G. Kavokin, A. V. School of Physical and Mathematical Sciences Quantum wells Excitons We calculate the spatial structure of four-component spinor systems of mixed bright and dark exciton condensates in coupled quantum wells. The spin-dependent bright-dark exciton conversion and Dresselhaus spin-orbit coupling is found to generate a rich variety of topological elements. By propagating the Gross-Pitaevskii equation in imaginary time, we observe the following: single and multiple polarized vortices; the phase separation of bright and dark excitons; and exotic spatial structures in density and spin polarization. Published version 2017-10-16T04:10:23Z 2019-12-06T16:12:07Z 2017-10-16T04:10:23Z 2019-12-06T16:12:07Z 2012 Journal Article Matuszewski, M., Liew, T. C. H., Rubo, Y. G., & Kavokin, A. V. (2012). Spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited GaAs-AlGaAs quantum wells. Physical Review B, 86(11), 115321-. 2469-9950 https://hdl.handle.net/10356/85892 http://hdl.handle.net/10220/43890 10.1103/PhysRevB.86.115321 en Physical Review B © 2012 American Physical Society. This paper was published in Physical Review B and is made available as an electronic reprint (preprint) with permission of American Physical Society. The published version is available at: [http://dx.doi.org/10.1103/PhysRevB.86.115321]. One print or electronic copy may be made for personal use only. Systematic or multiple reproduction, distribution to multiple locations via electronic or other means, duplication of any material in this paper for a fee or for commercial purposes, or modification of the content of the paper is prohibited and is subject to penalties under law. 4 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic Quantum wells
Excitons
spellingShingle Quantum wells
Excitons
Matuszewski, M.
Liew, Timothy Chi Hin
Rubo, Y. G.
Kavokin, A. V.
Spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited GaAs-AlGaAs quantum wells
description We calculate the spatial structure of four-component spinor systems of mixed bright and dark exciton condensates in coupled quantum wells. The spin-dependent bright-dark exciton conversion and Dresselhaus spin-orbit coupling is found to generate a rich variety of topological elements. By propagating the Gross-Pitaevskii equation in imaginary time, we observe the following: single and multiple polarized vortices; the phase separation of bright and dark excitons; and exotic spatial structures in density and spin polarization.
author2 School of Physical and Mathematical Sciences
author_facet School of Physical and Mathematical Sciences
Matuszewski, M.
Liew, Timothy Chi Hin
Rubo, Y. G.
Kavokin, A. V.
format Article
author Matuszewski, M.
Liew, Timothy Chi Hin
Rubo, Y. G.
Kavokin, A. V.
author_sort Matuszewski, M.
title Spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited GaAs-AlGaAs quantum wells
title_short Spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited GaAs-AlGaAs quantum wells
title_full Spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited GaAs-AlGaAs quantum wells
title_fullStr Spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited GaAs-AlGaAs quantum wells
title_full_unstemmed Spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited GaAs-AlGaAs quantum wells
title_sort spin-orbit coupling and the topology of gases of spin-degenerate cold excitons in photoexcited gaas-algaas quantum wells
publishDate 2017
url https://hdl.handle.net/10356/85892
http://hdl.handle.net/10220/43890
_version_ 1759854522863190016

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