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Stabilizing magnetic skyrmions in constricted nanowires

Magnetic skyrmions are topologically-protected chiral nano-scale spin structures that offer low power and high-density functionalities for spintronic devices. They behave as particles that can be moved, created and annihilated. These characteristics make them promising information-carrying bits, hen...

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Detalles Bibliográficos
Autores principales: Al Saidi, Warda, Sbiaa, Rachid
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9203817/
https://www.ncbi.nlm.nih.gov/pubmed/35710866
http://dx.doi.org/10.1038/s41598-022-14345-0
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author Al Saidi, Warda
Sbiaa, Rachid
author_facet Al Saidi, Warda
Sbiaa, Rachid
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collection PubMed
description Magnetic skyrmions are topologically-protected chiral nano-scale spin structures that offer low power and high-density functionalities for spintronic devices. They behave as particles that can be moved, created and annihilated. These characteristics make them promising information-carrying bits, hence a precise control of the skyrmion motion is essential. This study shows that stabilizing skyrmion is possible using a stepped nanowire geometry. The nanoconstriction dimension and materials properties are found to strongly affect the pinning, depinning and annihilation of the skyrmion. It is also observed that near the stepped region, the skyrmion slows down and its velocity changes direction before its stability. Moreover, a reduction of skyrmion size as it squeezes through the stepped region is observed. Our results will open a new strategy for the design and development of skyrmion-based devices.
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spelling pubmed-92038172022-06-18 Stabilizing magnetic skyrmions in constricted nanowires Al Saidi, Warda Sbiaa, Rachid Sci Rep Article Magnetic skyrmions are topologically-protected chiral nano-scale spin structures that offer low power and high-density functionalities for spintronic devices. They behave as particles that can be moved, created and annihilated. These characteristics make them promising information-carrying bits, hence a precise control of the skyrmion motion is essential. This study shows that stabilizing skyrmion is possible using a stepped nanowire geometry. The nanoconstriction dimension and materials properties are found to strongly affect the pinning, depinning and annihilation of the skyrmion. It is also observed that near the stepped region, the skyrmion slows down and its velocity changes direction before its stability. Moreover, a reduction of skyrmion size as it squeezes through the stepped region is observed. Our results will open a new strategy for the design and development of skyrmion-based devices. Nature Publishing Group UK 2022-06-16 /pmc/articles/PMC9203817/ /pubmed/35710866 http://dx.doi.org/10.1038/s41598-022-14345-0 Text en © The Author(s) 2022 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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Al Saidi, Warda
Sbiaa, Rachid
Stabilizing magnetic skyrmions in constricted nanowires
title Stabilizing magnetic skyrmions in constricted nanowires
title_full Stabilizing magnetic skyrmions in constricted nanowires
title_fullStr Stabilizing magnetic skyrmions in constricted nanowires
title_full_unstemmed Stabilizing magnetic skyrmions in constricted nanowires
title_short Stabilizing magnetic skyrmions in constricted nanowires
title_sort stabilizing magnetic skyrmions in constricted nanowires
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9203817/
https://www.ncbi.nlm.nih.gov/pubmed/35710866
http://dx.doi.org/10.1038/s41598-022-14345-0
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