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Rotating edge-field driven processing of chiral spin textures in racetrack devices
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 electri...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Nature Publishing Group UK
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7684311/ https://www.ncbi.nlm.nih.gov/pubmed/33230140 http://dx.doi.org/10.1038/s41598-020-77337-y |
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author | Schäffer, Alexander F. Siegl, Pia Stier, Martin Posske, Thore Berakdar, Jamal Thorwart, Michael Wiesendanger, Roland Vedmedenko, Elena Y. |
author_facet | Schäffer, Alexander F. Siegl, Pia Stier, Martin Posske, Thore Berakdar, Jamal Thorwart, Michael Wiesendanger, Roland Vedmedenko, Elena Y. |
author_sort | Schäffer, Alexander F. |
collection | PubMed |
description | 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 | Online Article Text |
id | pubmed-7684311 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-76843112020-11-27 Rotating edge-field driven processing of chiral spin textures in racetrack devices Schäffer, Alexander F. Siegl, Pia Stier, Martin Posske, Thore Berakdar, Jamal Thorwart, Michael Wiesendanger, Roland Vedmedenko, Elena Y. Sci Rep Article 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. Nature Publishing Group UK 2020-11-23 /pmc/articles/PMC7684311/ /pubmed/33230140 http://dx.doi.org/10.1038/s41598-020-77337-y Text en © The Author(s) 2020 Open AccessThis 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/. |
spellingShingle | Article Schäffer, Alexander F. Siegl, Pia Stier, Martin Posske, Thore Berakdar, Jamal Thorwart, Michael Wiesendanger, Roland Vedmedenko, Elena Y. Rotating edge-field driven processing of chiral spin textures in racetrack devices |
title | 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_short | 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 |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7684311/ https://www.ncbi.nlm.nih.gov/pubmed/33230140 http://dx.doi.org/10.1038/s41598-020-77337-y |
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