Rotating edge-field driven processing of chiral spin textures in racetrack devices

Abstract Topologically distinct magnetic structures like skyrmions, domain walls, and the uniformly magnetized state have multiple applications in logic devices, sensors, and as bits of information. One of the most promising concepts for applying these bits is the racetrack architecture controlled b...

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Autores principales:	Alexander F. Schäffer, Pia Siegl, Martin Stier, Thore Posske, Jamal Berakdar, Michael Thorwart, Roland Wiesendanger, Elena Y. Vedmedenko
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2020
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/77e6a20c5c5f4dc587970eaedb6c3111
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id	oai:doaj.org-article:77e6a20c5c5f4dc587970eaedb6c3111
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spelling	oai:doaj.org-article:77e6a20c5c5f4dc587970eaedb6c31112021-12-02T11:42:13ZRotating edge-field driven processing of chiral spin textures in racetrack devices10.1038/s41598-020-77337-y2045-2322https://doaj.org/article/77e6a20c5c5f4dc587970eaedb6c31112020-11-01T00:00:00Zhttps://doi.org/10.1038/s41598-020-77337-yhttps://doaj.org/toc/2045-2322Abstract Topologically distinct magnetic structures like skyrmions, domain walls, and the uniformly magnetized state have multiple applications in logic devices, sensors, and as bits of information. One of the most promising concepts for applying these bits is the racetrack architecture controlled by electric currents or magnetic driving fields. In state-of-the-art racetracks, these fields or currents are applied to the whole circuit. Here, we employ micromagnetic and atomistic simulations to establish a concept for racetrack memories free of global driving forces. Surprisingly, we realize that mixed sequences of topologically distinct objects can be created and propagated over far distances exclusively by local rotation of magnetization at the sample boundaries. We reveal the dependence between chirality of the rotation and the direction of propagation and define the phase space where the proposed procedure can be realized. The advantages of this approach are the exclusion of high current and field densities as well as its compatibility with an energy-efficient three-dimensional design.Alexander F. SchäfferPia SieglMartin StierThore PosskeJamal BerakdarMichael ThorwartRoland WiesendangerElena Y. VedmedenkoNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 10, Iss 1, Pp 1-8 (2020)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Alexander F. Schäffer Pia Siegl Martin Stier Thore Posske Jamal Berakdar Michael Thorwart Roland Wiesendanger Elena Y. Vedmedenko Rotating edge-field driven processing of chiral spin textures in racetrack devices
description	Abstract Topologically distinct magnetic structures like skyrmions, domain walls, and the uniformly magnetized state have multiple applications in logic devices, sensors, and as bits of information. One of the most promising concepts for applying these bits is the racetrack architecture controlled by electric currents or magnetic driving fields. In state-of-the-art racetracks, these fields or currents are applied to the whole circuit. Here, we employ micromagnetic and atomistic simulations to establish a concept for racetrack memories free of global driving forces. Surprisingly, we realize that mixed sequences of topologically distinct objects can be created and propagated over far distances exclusively by local rotation of magnetization at the sample boundaries. We reveal the dependence between chirality of the rotation and the direction of propagation and define the phase space where the proposed procedure can be realized. The advantages of this approach are the exclusion of high current and field densities as well as its compatibility with an energy-efficient three-dimensional design.
format	article
author	Alexander F. Schäffer Pia Siegl Martin Stier Thore Posske Jamal Berakdar Michael Thorwart Roland Wiesendanger Elena Y. Vedmedenko
author_facet	Alexander F. Schäffer Pia Siegl Martin Stier Thore Posske Jamal Berakdar Michael Thorwart Roland Wiesendanger Elena Y. Vedmedenko
author_sort	Alexander F. Schäffer
title	Rotating edge-field driven processing of chiral spin textures in racetrack devices
title_short	Rotating edge-field driven processing of chiral spin textures in racetrack devices
title_full	Rotating edge-field driven processing of chiral spin textures in racetrack devices
title_fullStr	Rotating edge-field driven processing of chiral spin textures in racetrack devices
title_full_unstemmed	Rotating edge-field driven processing of chiral spin textures in racetrack devices
title_sort	rotating edge-field driven processing of chiral spin textures in racetrack devices
publisher	Nature Portfolio
publishDate	2020
url	https://doaj.org/article/77e6a20c5c5f4dc587970eaedb6c3111
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Rotating edge-field driven processing of chiral spin textures in racetrack devices

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