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Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow
Thermal-current induced electron and spin dynamics in solids –dubbed “caloritronics”– have generated widespread interest in both fundamental physics and spintronics applications. Here, we examine the dynamics of nanometric topological spin textures, skyrmions driven by a temperature gradient ∇T or h...
Autores principales: | , , , , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2021
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8382761/ https://www.ncbi.nlm.nih.gov/pubmed/34426575 http://dx.doi.org/10.1038/s41467-021-25291-2 |
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author | Yu, Xiuzhen Kagawa, Fumitaka Seki, Shinichiro Kubota, Masashi Masell, Jan Yasin, Fehmi S. Nakajima, Kiyomi Nakamura, Masao Kawasaki, Masashi Nagaosa, Naoto Tokura, Yoshinori |
author_facet | Yu, Xiuzhen Kagawa, Fumitaka Seki, Shinichiro Kubota, Masashi Masell, Jan Yasin, Fehmi S. Nakajima, Kiyomi Nakamura, Masao Kawasaki, Masashi Nagaosa, Naoto Tokura, Yoshinori |
author_sort | Yu, Xiuzhen |
collection | PubMed |
description | Thermal-current induced electron and spin dynamics in solids –dubbed “caloritronics”– have generated widespread interest in both fundamental physics and spintronics applications. Here, we examine the dynamics of nanometric topological spin textures, skyrmions driven by a temperature gradient ∇T or heat flow, that are evaluated through in-situ real-space observations in an insulating helimagnet Cu(2)OSeO(3). We observe increases of the skyrmion velocity and the Hall angle with increasing ∇T above a critical value of ~ 13 mK/mm, which is two orders of magnitude lower than the ∇T required to drive ferromagnetic domain walls. A comparable magnitude of ∇T is also observed to move the domain walls between a skyrmion domain and the non-topological conical-spin domain from cold to hot regions. Our results demonstrate the efficient manipulation of skyrmions by temperature gradients, a promising step towards energy-efficient “green” spintronics. |
format | Online Article Text |
id | pubmed-8382761 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2021 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-83827612021-09-22 Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow Yu, Xiuzhen Kagawa, Fumitaka Seki, Shinichiro Kubota, Masashi Masell, Jan Yasin, Fehmi S. Nakajima, Kiyomi Nakamura, Masao Kawasaki, Masashi Nagaosa, Naoto Tokura, Yoshinori Nat Commun Article Thermal-current induced electron and spin dynamics in solids –dubbed “caloritronics”– have generated widespread interest in both fundamental physics and spintronics applications. Here, we examine the dynamics of nanometric topological spin textures, skyrmions driven by a temperature gradient ∇T or heat flow, that are evaluated through in-situ real-space observations in an insulating helimagnet Cu(2)OSeO(3). We observe increases of the skyrmion velocity and the Hall angle with increasing ∇T above a critical value of ~ 13 mK/mm, which is two orders of magnitude lower than the ∇T required to drive ferromagnetic domain walls. A comparable magnitude of ∇T is also observed to move the domain walls between a skyrmion domain and the non-topological conical-spin domain from cold to hot regions. Our results demonstrate the efficient manipulation of skyrmions by temperature gradients, a promising step towards energy-efficient “green” spintronics. Nature Publishing Group UK 2021-08-23 /pmc/articles/PMC8382761/ /pubmed/34426575 http://dx.doi.org/10.1038/s41467-021-25291-2 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/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/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Yu, Xiuzhen Kagawa, Fumitaka Seki, Shinichiro Kubota, Masashi Masell, Jan Yasin, Fehmi S. Nakajima, Kiyomi Nakamura, Masao Kawasaki, Masashi Nagaosa, Naoto Tokura, Yoshinori Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow |
title | Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow |
title_full | Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow |
title_fullStr | Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow |
title_full_unstemmed | Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow |
title_short | Real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow |
title_sort | real-space observations of 60-nm skyrmion dynamics in an insulating magnet under low heat flow |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8382761/ https://www.ncbi.nlm.nih.gov/pubmed/34426575 http://dx.doi.org/10.1038/s41467-021-25291-2 |
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