Current-Driven Skyrmion Dynamics Along Curved Tracks

[EN] The current-driven skyrmion (Sk) motion along two exchange-coupled ferromagnetic (FM) layers with perpendicular magnetic anisotropy is studied by means of micromagnetic simulations and compared to the conventional case of a single FM layer. Our results indicate that the two coupled Sks can be s...

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Autores: Luis, R.F., Raposo Funcia, Víctor Javier, Alejos Ducal, Óscar, Martínez Vecino, Eduardo
Tipo de recurso: artículo
Estado:Versión borrador
Fecha de publicación:2019
País:España
Institución:Universidad de Salamanca (USAL)
Repositorio:GREDOS. Repositorio Institucional de la Universidad de Salamanca
OAI Identifier:oai:gredos.usal.es:10366/147165
Acceso en línea:http://hdl.handle.net/10366/147165
Access Level:acceso abierto
Palabra clave:Magnetism
Computational physics
2202.08 Magnetismo
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repository_id_str
spelling Current-Driven Skyrmion Dynamics Along Curved TracksLuis, R.F.Raposo Funcia, Víctor JavierAlejos Ducal, ÓscarMartínez Vecino, EduardoMagnetismComputational physics2202.08 Magnetismo[EN] The current-driven skyrmion (Sk) motion along two exchange-coupled ferromagnetic (FM) layers with perpendicular magnetic anisotropy is studied by means of micromagnetic simulations and compared to the conventional case of a single FM layer. Our results indicate that the two coupled Sks can be synchronously driven along each FM layer in the presence of a strong interlayer exchange coupling and that the velocity is significantly enhanced due to the antiferromagnetic (AF) exchange coupling as compared with the single-FM-layer case. The interfacial Dzyaloshinskii–Moriya interaction gives the required chirality to the magnetization textures, while the interlayer exchange coupling favors the synchronous movement of the coupled Sks by a dragging mechanism, without depicting the unwanted Sk Hall effect. This observation is particularly relevant to drive Sks along curved strips, which are also evaluated here. Sks move with different velocities along single FM stacks with curved parts. On the contrary, the AF coupling between the FM layers mitigates the Sk Hall effect, which suggests these systems to achieve efficient and highly packed displacement of trains of Sks for spintronics devices. A study taking into account defects and thermal fluctuations analyzes the validity range of these claims.Spanish Governmentunder Project MAT2014-52477-C5-4-P, Project MAT2017- 87072-C4-1-P, and Project MAT2017-90771-REDT Junta de Castilla y Leon under Project SA090U16 and Project SA299P18.Institute of Electrical and Electronics Engineers (Nueva York, Estados Unidos)202120212019info:eu-repo/semantics/articleinfo:eu-repo/semantics/draftapplication/pdfhttp://hdl.handle.net/10366/147165reponame:GREDOS. Repositorio Institucional de la Universidad de Salamancainstname:Universidad de Salamanca (USAL)InglésMAT2017- 87072-C4-1-PMAT2014-52477-C5-4-PMAT2017-90771-REDTSA090U16SA299P18Attribution-NonCommercial-NoDerivatives 4.0 Internacional© 20xx IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.http://creativecommons.org/licenses/by-nc-nd/4.0/info:eu-repo/semantics/openAccessoai:gredos.usal.es:10366/1471652026-06-07T06:28:51Z
dc.title.none.fl_str_mv Current-Driven Skyrmion Dynamics Along Curved Tracks
title Current-Driven Skyrmion Dynamics Along Curved Tracks
spellingShingle Current-Driven Skyrmion Dynamics Along Curved Tracks
Luis, R.F.
Magnetism
Computational physics
2202.08 Magnetismo
title_short Current-Driven Skyrmion Dynamics Along Curved Tracks
title_full Current-Driven Skyrmion Dynamics Along Curved Tracks
title_fullStr Current-Driven Skyrmion Dynamics Along Curved Tracks
title_full_unstemmed Current-Driven Skyrmion Dynamics Along Curved Tracks
title_sort Current-Driven Skyrmion Dynamics Along Curved Tracks
dc.creator.none.fl_str_mv Luis, R.F.
Raposo Funcia, Víctor Javier
Alejos Ducal, Óscar
Martínez Vecino, Eduardo
author Luis, R.F.
author_facet Luis, R.F.
Raposo Funcia, Víctor Javier
Alejos Ducal, Óscar
Martínez Vecino, Eduardo
author_role author
author2 Raposo Funcia, Víctor Javier
Alejos Ducal, Óscar
Martínez Vecino, Eduardo
author2_role author
author
author
dc.subject.none.fl_str_mv Magnetism
Computational physics
2202.08 Magnetismo
topic Magnetism
Computational physics
2202.08 Magnetismo
description [EN] The current-driven skyrmion (Sk) motion along two exchange-coupled ferromagnetic (FM) layers with perpendicular magnetic anisotropy is studied by means of micromagnetic simulations and compared to the conventional case of a single FM layer. Our results indicate that the two coupled Sks can be synchronously driven along each FM layer in the presence of a strong interlayer exchange coupling and that the velocity is significantly enhanced due to the antiferromagnetic (AF) exchange coupling as compared with the single-FM-layer case. The interfacial Dzyaloshinskii–Moriya interaction gives the required chirality to the magnetization textures, while the interlayer exchange coupling favors the synchronous movement of the coupled Sks by a dragging mechanism, without depicting the unwanted Sk Hall effect. This observation is particularly relevant to drive Sks along curved strips, which are also evaluated here. Sks move with different velocities along single FM stacks with curved parts. On the contrary, the AF coupling between the FM layers mitigates the Sk Hall effect, which suggests these systems to achieve efficient and highly packed displacement of trains of Sks for spintronics devices. A study taking into account defects and thermal fluctuations analyzes the validity range of these claims.
publishDate 2019
dc.date.none.fl_str_mv 2019
2021
2021
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/draft
format article
status_str draft
dc.identifier.none.fl_str_mv http://hdl.handle.net/10366/147165
url http://hdl.handle.net/10366/147165
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv MAT2017- 87072-C4-1-P
MAT2014-52477-C5-4-P
MAT2017-90771-REDT
SA090U16
SA299P18
dc.rights.none.fl_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv Attribution-NonCommercial-NoDerivatives 4.0 Internacional
http://creativecommons.org/licenses/by-nc-nd/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers (Nueva York, Estados Unidos)
publisher.none.fl_str_mv Institute of Electrical and Electronics Engineers (Nueva York, Estados Unidos)
dc.source.none.fl_str_mv reponame:GREDOS. Repositorio Institucional de la Universidad de Salamanca
instname:Universidad de Salamanca (USAL)
instname_str Universidad de Salamanca (USAL)
reponame_str GREDOS. Repositorio Institucional de la Universidad de Salamanca
collection GREDOS. Repositorio Institucional de la Universidad de Salamanca
repository.name.fl_str_mv
repository.mail.fl_str_mv
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score 15,300724

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