A self-consistent spin-diffusion model for micromagnetics

Abstract We propose a three-dimensional micromagnetic model that dynamically solves the Landau-Lifshitz-Gilbert equation coupled to the full spin-diffusion equation. In contrast to previous methods, we solve for the magnetization dynamics and the electric potential in a self-consistent fashion. This...

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Autores principales:	Claas Abert, Michele Ruggeri, Florian Bruckner, Christoph Vogler, Aurelien Manchon, Dirk Praetorius, Dieter Suess
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2016
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/626d054797f94f04b748130ccc8e6552
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spelling	oai:doaj.org-article:626d054797f94f04b748130ccc8e65522021-12-02T12:32:09ZA self-consistent spin-diffusion model for micromagnetics10.1038/s41598-016-0019-y2045-2322https://doaj.org/article/626d054797f94f04b748130ccc8e65522016-12-01T00:00:00Zhttps://doi.org/10.1038/s41598-016-0019-yhttps://doaj.org/toc/2045-2322Abstract We propose a three-dimensional micromagnetic model that dynamically solves the Landau-Lifshitz-Gilbert equation coupled to the full spin-diffusion equation. In contrast to previous methods, we solve for the magnetization dynamics and the electric potential in a self-consistent fashion. This treatment allows for an accurate description of magnetization dependent resistance changes. Moreover, the presented algorithm describes both spin accumulation due to smooth magnetization transitions and due to material interfaces as in multilayer structures. The model and its finite-element implementation are validated by current driven motion of a magnetic vortex structure. In a second experiment, the resistivity of a magnetic multilayer structure in dependence of the tilting angle of the magnetization in the different layers is investigated. Both examples show good agreement with reference simulations and experiments respectively.Claas AbertMichele RuggeriFlorian BrucknerChristoph VoglerAurelien ManchonDirk PraetoriusDieter SuessNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 6, Iss 1, Pp 1-7 (2016)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Claas Abert Michele Ruggeri Florian Bruckner Christoph Vogler Aurelien Manchon Dirk Praetorius Dieter Suess A self-consistent spin-diffusion model for micromagnetics
description	Abstract We propose a three-dimensional micromagnetic model that dynamically solves the Landau-Lifshitz-Gilbert equation coupled to the full spin-diffusion equation. In contrast to previous methods, we solve for the magnetization dynamics and the electric potential in a self-consistent fashion. This treatment allows for an accurate description of magnetization dependent resistance changes. Moreover, the presented algorithm describes both spin accumulation due to smooth magnetization transitions and due to material interfaces as in multilayer structures. The model and its finite-element implementation are validated by current driven motion of a magnetic vortex structure. In a second experiment, the resistivity of a magnetic multilayer structure in dependence of the tilting angle of the magnetization in the different layers is investigated. Both examples show good agreement with reference simulations and experiments respectively.
format	article
author	Claas Abert Michele Ruggeri Florian Bruckner Christoph Vogler Aurelien Manchon Dirk Praetorius Dieter Suess
author_facet	Claas Abert Michele Ruggeri Florian Bruckner Christoph Vogler Aurelien Manchon Dirk Praetorius Dieter Suess
author_sort	Claas Abert
title	A self-consistent spin-diffusion model for micromagnetics
title_short	A self-consistent spin-diffusion model for micromagnetics
title_full	A self-consistent spin-diffusion model for micromagnetics
title_fullStr	A self-consistent spin-diffusion model for micromagnetics
title_full_unstemmed	A self-consistent spin-diffusion model for micromagnetics
title_sort	self-consistent spin-diffusion model for micromagnetics
publisher	Nature Portfolio
publishDate	2016
url	https://doaj.org/article/626d054797f94f04b748130ccc8e6552
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A self-consistent spin-diffusion model for micromagnetics

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