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Spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of Weyl semimetal WTe(2)
Spin–orbit torque has recently been intensively investigated for the purposes of manipulating the magnetization in magnetic nano-devices and understanding fundamental physics. Therefore, the search for novel materials or material combinations that exhibit a strong enough spin-torque effect has becom...
Autores principales: | , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6162210/ https://www.ncbi.nlm.nih.gov/pubmed/30266960 http://dx.doi.org/10.1038/s41467-018-06518-1 |
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author | Li, Peng Wu, Weikang Wen, Yan Zhang, Chenhui Zhang, Junwei Zhang, Senfu Yu, Zhiming Yang, Shengyuan A. Manchon, A. Zhang, Xi-xiang |
author_facet | Li, Peng Wu, Weikang Wen, Yan Zhang, Chenhui Zhang, Junwei Zhang, Senfu Yu, Zhiming Yang, Shengyuan A. Manchon, A. Zhang, Xi-xiang |
author_sort | Li, Peng |
collection | PubMed |
description | Spin–orbit torque has recently been intensively investigated for the purposes of manipulating the magnetization in magnetic nano-devices and understanding fundamental physics. Therefore, the search for novel materials or material combinations that exhibit a strong enough spin-torque effect has become one of the top priorities in this field of spintronics. Weyl semimetal, a new topological material that features open Fermi arc with strong spin–orbit coupling and spin–momentum locking effect, is naturally expected to exhibit an enhanced spin-torque effect in magnetic nano-devices. Here we observe a significantly enhanced spin conductivity, which is associated with the field-like torque at low temperatures. The enhancement is obtained in the b-axis WTe(2)/Py bilayers of nano-devices but not observed in the a-axis of WTe(2)/Py nano-devices, which can be ascribed to the enhanced spin accumulation by the spin–momentum locking effect of the Fermi arcs of the Weyl semimetal WTe(2). |
format | Online Article Text |
id | pubmed-6162210 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-61622102018-10-01 Spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of Weyl semimetal WTe(2) Li, Peng Wu, Weikang Wen, Yan Zhang, Chenhui Zhang, Junwei Zhang, Senfu Yu, Zhiming Yang, Shengyuan A. Manchon, A. Zhang, Xi-xiang Nat Commun Article Spin–orbit torque has recently been intensively investigated for the purposes of manipulating the magnetization in magnetic nano-devices and understanding fundamental physics. Therefore, the search for novel materials or material combinations that exhibit a strong enough spin-torque effect has become one of the top priorities in this field of spintronics. Weyl semimetal, a new topological material that features open Fermi arc with strong spin–orbit coupling and spin–momentum locking effect, is naturally expected to exhibit an enhanced spin-torque effect in magnetic nano-devices. Here we observe a significantly enhanced spin conductivity, which is associated with the field-like torque at low temperatures. The enhancement is obtained in the b-axis WTe(2)/Py bilayers of nano-devices but not observed in the a-axis of WTe(2)/Py nano-devices, which can be ascribed to the enhanced spin accumulation by the spin–momentum locking effect of the Fermi arcs of the Weyl semimetal WTe(2). Nature Publishing Group UK 2018-09-28 /pmc/articles/PMC6162210/ /pubmed/30266960 http://dx.doi.org/10.1038/s41467-018-06518-1 Text en © The Author(s) 2018 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 Li, Peng Wu, Weikang Wen, Yan Zhang, Chenhui Zhang, Junwei Zhang, Senfu Yu, Zhiming Yang, Shengyuan A. Manchon, A. Zhang, Xi-xiang Spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of Weyl semimetal WTe(2) |
title | Spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of Weyl semimetal WTe(2) |
title_full | Spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of Weyl semimetal WTe(2) |
title_fullStr | Spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of Weyl semimetal WTe(2) |
title_full_unstemmed | Spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of Weyl semimetal WTe(2) |
title_short | Spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of Weyl semimetal WTe(2) |
title_sort | spin-momentum locking and spin-orbit torques in magnetic nano-heterojunctions composed of weyl semimetal wte(2) |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6162210/ https://www.ncbi.nlm.nih.gov/pubmed/30266960 http://dx.doi.org/10.1038/s41467-018-06518-1 |
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