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Spin-momentum locked spin manipulation in a two-dimensional Rashba system
Spin-momentum locking, which constrains spin orientation perpendicular to electron momentum, is attracting considerable interest for exploring various spin functionalities in semiconductors and topological materials. Efficient spin generation and spin detection have been demonstrated using the induc...
Autores principales: | , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2019
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6374388/ https://www.ncbi.nlm.nih.gov/pubmed/30760759 http://dx.doi.org/10.1038/s41598-018-37967-9 |
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author | Kohda, Makoto Okayasu, Takanori Nitta, Junsaku |
author_facet | Kohda, Makoto Okayasu, Takanori Nitta, Junsaku |
author_sort | Kohda, Makoto |
collection | PubMed |
description | Spin-momentum locking, which constrains spin orientation perpendicular to electron momentum, is attracting considerable interest for exploring various spin functionalities in semiconductors and topological materials. Efficient spin generation and spin detection have been demonstrated using the induced helical spin texture. Nevertheless, spin manipulation by spin-momentum locking remains a missing piece because, once bias voltage is applied to induce the current flow, the spin orientation must be locked by the electron momentum direction, thereby rendering spin phase control difficult. Herein, we demonstrate the spin-momentum locking-induced spin manipulation for ballistic electrons in a strong Rashba two-dimensional system. Electron spin rotates in a circular orbital motion for ballistically moving electrons, although spin orientation is locked towards the spin-orbit field because of the helical spin texture. This fact demonstrates spin manipulation by control of the electron orbital motion and reveals potential effects of the orbital degree of freedom on the spin phase for future spintronic and topological devices and for the processing of quantum information. |
format | Online Article Text |
id | pubmed-6374388 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2019 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-63743882019-02-19 Spin-momentum locked spin manipulation in a two-dimensional Rashba system Kohda, Makoto Okayasu, Takanori Nitta, Junsaku Sci Rep Article Spin-momentum locking, which constrains spin orientation perpendicular to electron momentum, is attracting considerable interest for exploring various spin functionalities in semiconductors and topological materials. Efficient spin generation and spin detection have been demonstrated using the induced helical spin texture. Nevertheless, spin manipulation by spin-momentum locking remains a missing piece because, once bias voltage is applied to induce the current flow, the spin orientation must be locked by the electron momentum direction, thereby rendering spin phase control difficult. Herein, we demonstrate the spin-momentum locking-induced spin manipulation for ballistic electrons in a strong Rashba two-dimensional system. Electron spin rotates in a circular orbital motion for ballistically moving electrons, although spin orientation is locked towards the spin-orbit field because of the helical spin texture. This fact demonstrates spin manipulation by control of the electron orbital motion and reveals potential effects of the orbital degree of freedom on the spin phase for future spintronic and topological devices and for the processing of quantum information. Nature Publishing Group UK 2019-02-13 /pmc/articles/PMC6374388/ /pubmed/30760759 http://dx.doi.org/10.1038/s41598-018-37967-9 Text en © The Author(s) 2019 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/. |
spellingShingle | Article Kohda, Makoto Okayasu, Takanori Nitta, Junsaku Spin-momentum locked spin manipulation in a two-dimensional Rashba system |
title | Spin-momentum locked spin manipulation in a two-dimensional Rashba system |
title_full | Spin-momentum locked spin manipulation in a two-dimensional Rashba system |
title_fullStr | Spin-momentum locked spin manipulation in a two-dimensional Rashba system |
title_full_unstemmed | Spin-momentum locked spin manipulation in a two-dimensional Rashba system |
title_short | Spin-momentum locked spin manipulation in a two-dimensional Rashba system |
title_sort | spin-momentum locked spin manipulation in a two-dimensional rashba system |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6374388/ https://www.ncbi.nlm.nih.gov/pubmed/30760759 http://dx.doi.org/10.1038/s41598-018-37967-9 |
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