Breathing Modes of Skyrmion Strings in a Synthetic Antiferromagnet

Fuente: arXiv
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Auteurs principaux: Barker, Christopher E. A., Haltz, Eloi, Moore, Thomas A., Marrows, Christopher H.
Format: Preprint
Publié: 2021
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author Barker, Christopher E. A.
Haltz, Eloi
Moore, Thomas A.
Marrows, Christopher H.
author_facet Barker, Christopher E. A.
Haltz, Eloi
Moore, Thomas A.
Marrows, Christopher H.
contents Skyrmions are small topologically protected magnetic structures that hold promise for applications from data storage to neuromorphic computing and they have been shown to possess internal microwave frequency excitations. Skyrmions in a synthetic antiferromagnet have been predicted to be smaller and faster than their ferromagnetic equivalents, and also shown to possess more internal modes. In this work we consider the breathing modes of skyrmions in a four repetition synthetic antiferromagnetic multilayer by means of micromagnetic simulations and examine the further splitting of the modes into different arrangements of out-of-phase and in-phase modes. This results in a lowering of frequencies which is promising for skyrmion sensing applications in a synthetic antiferromagnet.
format Preprint
id arxiv_https___arxiv_org_abs_2112_05481
institution arXiv
publishDate 2021
record_format arxiv
spellingShingle Breathing Modes of Skyrmion Strings in a Synthetic Antiferromagnet
Barker, Christopher E. A.
Haltz, Eloi
Moore, Thomas A.
Marrows, Christopher H.
Mesoscale and Nanoscale Physics
Skyrmions are small topologically protected magnetic structures that hold promise for applications from data storage to neuromorphic computing and they have been shown to possess internal microwave frequency excitations. Skyrmions in a synthetic antiferromagnet have been predicted to be smaller and faster than their ferromagnetic equivalents, and also shown to possess more internal modes. In this work we consider the breathing modes of skyrmions in a four repetition synthetic antiferromagnetic multilayer by means of micromagnetic simulations and examine the further splitting of the modes into different arrangements of out-of-phase and in-phase modes. This results in a lowering of frequencies which is promising for skyrmion sensing applications in a synthetic antiferromagnet.
title Breathing Modes of Skyrmion Strings in a Synthetic Antiferromagnet
topic Mesoscale and Nanoscale Physics
url https://arxiv.org/abs/2112.05481