Spin-momentum locking as a source of spin-splitting anisotropy in inverted HgTe quantum wells
We show theoretically that Rashba spin–orbit coupling in gated heterostructures results in strong anisotropy of electron spin splitting. A simple analytical expression for the splitting energy is derived and shown to be in excellent agreement with multiband numerical calculations. Moreover, our theo...
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| Format: | Article |
| Language: | English |
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IOP Publishing
2025-01-01
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| Series: | New Journal of Physics |
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| Online Access: | https://doi.org/10.1088/1367-2630/ada794 |
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| _version_ | 1841525534505304064 |
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| author | Maciej Kubisa Krzysztof Ryczko |
| author_facet | Maciej Kubisa Krzysztof Ryczko |
| author_sort | Maciej Kubisa |
| collection | DOAJ |
| description | We show theoretically that Rashba spin–orbit coupling in gated heterostructures results in strong anisotropy of electron spin splitting. A simple analytical expression for the splitting energy is derived and shown to be in excellent agreement with multiband numerical calculations. Moreover, our theory successfully explains recent experimental results for inverted HgTe quantum wells. |
| format | Article |
| id | doaj-art-44bace4aaf774554b013cad7d8077bf7 |
| institution | Kabale University |
| issn | 1367-2630 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | IOP Publishing |
| record_format | Article |
| series | New Journal of Physics |
| spelling | doaj-art-44bace4aaf774554b013cad7d8077bf72025-01-17T09:35:57ZengIOP PublishingNew Journal of Physics1367-26302025-01-0127101300610.1088/1367-2630/ada794Spin-momentum locking as a source of spin-splitting anisotropy in inverted HgTe quantum wellsMaciej Kubisa0Krzysztof Ryczko1Department of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology , Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, PolandDepartment of Experimental Physics, Faculty of Fundamental Problems of Technology, Wrocław University of Science and Technology , Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, PolandWe show theoretically that Rashba spin–orbit coupling in gated heterostructures results in strong anisotropy of electron spin splitting. A simple analytical expression for the splitting energy is derived and shown to be in excellent agreement with multiband numerical calculations. Moreover, our theory successfully explains recent experimental results for inverted HgTe quantum wells.https://doi.org/10.1088/1367-2630/ada794condensed matterspin–orbit coupling2-dimensional systemsnarrow band gap systemsk·p method |
| spellingShingle | Maciej Kubisa Krzysztof Ryczko Spin-momentum locking as a source of spin-splitting anisotropy in inverted HgTe quantum wells New Journal of Physics condensed matter spin–orbit coupling 2-dimensional systems narrow band gap systems k·p method |
| title | Spin-momentum locking as a source of spin-splitting anisotropy in inverted HgTe quantum wells |
| title_full | Spin-momentum locking as a source of spin-splitting anisotropy in inverted HgTe quantum wells |
| title_fullStr | Spin-momentum locking as a source of spin-splitting anisotropy in inverted HgTe quantum wells |
| title_full_unstemmed | Spin-momentum locking as a source of spin-splitting anisotropy in inverted HgTe quantum wells |
| title_short | Spin-momentum locking as a source of spin-splitting anisotropy in inverted HgTe quantum wells |
| title_sort | spin momentum locking as a source of spin splitting anisotropy in inverted hgte quantum wells |
| topic | condensed matter spin–orbit coupling 2-dimensional systems narrow band gap systems k·p method |
| url | https://doi.org/10.1088/1367-2630/ada794 |
| work_keys_str_mv | AT maciejkubisa spinmomentumlockingasasourceofspinsplittinganisotropyininvertedhgtequantumwells AT krzysztofryczko spinmomentumlockingasasourceofspinsplittinganisotropyininvertedhgtequantumwells |