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Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films
Magnetic skyrmions are swirling magnetic textures with novel characteristics suitable for future spintronic and topological applications. Recent studies confirmed the room-temperature stabilization of skyrmions in ultrathin ferromagnets. However, such ferromagnetic skyrmions show an undesirable topo...
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/PMC5840382/ https://www.ncbi.nlm.nih.gov/pubmed/29511179 http://dx.doi.org/10.1038/s41467-018-03378-7 |
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author | Woo, Seonghoon Song, Kyung Mee Zhang, Xichao Zhou, Yan Ezawa, Motohiko Liu, Xiaoxi Finizio, S. Raabe, J. Lee, Nyun Jong Kim, Sang-Il Park, Seung-Young Kim, Younghak Kim, Jae-Young Lee, Dongjoon Lee, OukJae Choi, Jun Woo Min, Byoung-Chul Koo, Hyun Cheol Chang, Joonyeon |
author_facet | Woo, Seonghoon Song, Kyung Mee Zhang, Xichao Zhou, Yan Ezawa, Motohiko Liu, Xiaoxi Finizio, S. Raabe, J. Lee, Nyun Jong Kim, Sang-Il Park, Seung-Young Kim, Younghak Kim, Jae-Young Lee, Dongjoon Lee, OukJae Choi, Jun Woo Min, Byoung-Chul Koo, Hyun Cheol Chang, Joonyeon |
author_sort | Woo, Seonghoon |
collection | PubMed |
description | Magnetic skyrmions are swirling magnetic textures with novel characteristics suitable for future spintronic and topological applications. Recent studies confirmed the room-temperature stabilization of skyrmions in ultrathin ferromagnets. However, such ferromagnetic skyrmions show an undesirable topological effect, the skyrmion Hall effect, which leads to their current-driven motion towards device edges, where skyrmions could easily be annihilated by topographic defects. Recent theoretical studies have predicted enhanced current-driven behavior for antiferromagnetically exchange-coupled skyrmions. Here we present the stabilization of these skyrmions and their current-driven dynamics in ferrimagnetic GdFeCo films. By utilizing element-specific X-ray imaging, we find that the skyrmions in the Gd and FeCo sublayers are antiferromagnetically exchange-coupled. We further confirm that ferrimagnetic skyrmions can move at a velocity of ~50 m s(−1) with reduced skyrmion Hall angle, |θ(SkHE)| ~ 20°. Our findings open the door to ferrimagnetic and antiferromagnetic skyrmionics while providing key experimental evidences of recent theoretical studies. |
format | Online Article Text |
id | pubmed-5840382 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-58403822018-03-09 Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films Woo, Seonghoon Song, Kyung Mee Zhang, Xichao Zhou, Yan Ezawa, Motohiko Liu, Xiaoxi Finizio, S. Raabe, J. Lee, Nyun Jong Kim, Sang-Il Park, Seung-Young Kim, Younghak Kim, Jae-Young Lee, Dongjoon Lee, OukJae Choi, Jun Woo Min, Byoung-Chul Koo, Hyun Cheol Chang, Joonyeon Nat Commun Article Magnetic skyrmions are swirling magnetic textures with novel characteristics suitable for future spintronic and topological applications. Recent studies confirmed the room-temperature stabilization of skyrmions in ultrathin ferromagnets. However, such ferromagnetic skyrmions show an undesirable topological effect, the skyrmion Hall effect, which leads to their current-driven motion towards device edges, where skyrmions could easily be annihilated by topographic defects. Recent theoretical studies have predicted enhanced current-driven behavior for antiferromagnetically exchange-coupled skyrmions. Here we present the stabilization of these skyrmions and their current-driven dynamics in ferrimagnetic GdFeCo films. By utilizing element-specific X-ray imaging, we find that the skyrmions in the Gd and FeCo sublayers are antiferromagnetically exchange-coupled. We further confirm that ferrimagnetic skyrmions can move at a velocity of ~50 m s(−1) with reduced skyrmion Hall angle, |θ(SkHE)| ~ 20°. Our findings open the door to ferrimagnetic and antiferromagnetic skyrmionics while providing key experimental evidences of recent theoretical studies. Nature Publishing Group UK 2018-03-06 /pmc/articles/PMC5840382/ /pubmed/29511179 http://dx.doi.org/10.1038/s41467-018-03378-7 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 Woo, Seonghoon Song, Kyung Mee Zhang, Xichao Zhou, Yan Ezawa, Motohiko Liu, Xiaoxi Finizio, S. Raabe, J. Lee, Nyun Jong Kim, Sang-Il Park, Seung-Young Kim, Younghak Kim, Jae-Young Lee, Dongjoon Lee, OukJae Choi, Jun Woo Min, Byoung-Chul Koo, Hyun Cheol Chang, Joonyeon Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films |
title | Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films |
title_full | Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films |
title_fullStr | Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films |
title_full_unstemmed | Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films |
title_short | Current-driven dynamics and inhibition of the skyrmion Hall effect of ferrimagnetic skyrmions in GdFeCo films |
title_sort | current-driven dynamics and inhibition of the skyrmion hall effect of ferrimagnetic skyrmions in gdfeco films |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5840382/ https://www.ncbi.nlm.nih.gov/pubmed/29511179 http://dx.doi.org/10.1038/s41467-018-03378-7 |
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