Moving skyrmions in Antiferromagnets by Sublattice Displacements
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
| Veröffentlicht: |
2024
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| _version_ | 1866916727524163584 |
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| author | Lau, Michael Häusler, Wolfgang Thorwart, Michael |
| author_facet | Lau, Michael Häusler, Wolfgang Thorwart, Michael |
| contents | The texture in antiferromagnets hosting a topologically protected skyrmion can be viewed as two effectively coupled ferromagnetic skyrmions. Assuming rigid magnetic configurations, we show that this coupling results in an effective mass of the antiferromagnetic skyrmion and that its dynamics can be viewed as due to a relative displacement of the two sublattice ferromagnetic skyrmions. The theory holds for different antiferromagnetic systems and includes effects from dissipation and external forces caused by electric currents. We verify our analytical results by micromagnetic simulations. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2409_11493 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Moving skyrmions in Antiferromagnets by Sublattice Displacements Lau, Michael Häusler, Wolfgang Thorwart, Michael Mesoscale and Nanoscale Physics The texture in antiferromagnets hosting a topologically protected skyrmion can be viewed as two effectively coupled ferromagnetic skyrmions. Assuming rigid magnetic configurations, we show that this coupling results in an effective mass of the antiferromagnetic skyrmion and that its dynamics can be viewed as due to a relative displacement of the two sublattice ferromagnetic skyrmions. The theory holds for different antiferromagnetic systems and includes effects from dissipation and external forces caused by electric currents. We verify our analytical results by micromagnetic simulations. |
| title | Moving skyrmions in Antiferromagnets by Sublattice Displacements |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2409.11493 |