Creating and Deleting a Single Dipolar Skyrmion by Surface Spin Twists
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arXiv
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| Autores principales: | , , , , , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2025
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| Materias: | |
| Acceso en línea: | |
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| _version_ | 1866911310887780352 |
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| author | Tang, Jin Jiang, Jialiang Wu, Yaodong Kong, Lingyao Wang, Yihao Li, Junbo Soh, Y. Xiong, Yimin Wang, Shouguo Tian, Mingliang Du, Haifeng |
| author_facet | Tang, Jin Jiang, Jialiang Wu, Yaodong Kong, Lingyao Wang, Yihao Li, Junbo Soh, Y. Xiong, Yimin Wang, Shouguo Tian, Mingliang Du, Haifeng |
| contents | We report deterministic operations on single dipolar skyrmions confined in nanostructured cuboids using in-plane currents. We achieve highly reversible writing and deleting of skyrmions in the simple cuboid without any artificial defects or pinning sites. The current-induced creation of skyrmions is well-understood through the spin-transfer torque acting on surface spin twists of the spontaneous 3D ferromagnetic state, caused by the magnetic dipole-dipole interaction of the uniaxial Fe3Sn2 magnet with a low-quality factor. Current-induced deletions of skyrmions result from the combined effects of magnetic hysteresis and Joule thermal heating. Our results are replicated consistently through 3D micromagnetic simulations. Our approach offers a viable method for achieving reliable single-bit operations in skyrmionic devices for applications such as random-access memories. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_09229 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Creating and Deleting a Single Dipolar Skyrmion by Surface Spin Twists Tang, Jin Jiang, Jialiang Wu, Yaodong Kong, Lingyao Wang, Yihao Li, Junbo Soh, Y. Xiong, Yimin Wang, Shouguo Tian, Mingliang Du, Haifeng Mesoscale and Nanoscale Physics Materials Science We report deterministic operations on single dipolar skyrmions confined in nanostructured cuboids using in-plane currents. We achieve highly reversible writing and deleting of skyrmions in the simple cuboid without any artificial defects or pinning sites. The current-induced creation of skyrmions is well-understood through the spin-transfer torque acting on surface spin twists of the spontaneous 3D ferromagnetic state, caused by the magnetic dipole-dipole interaction of the uniaxial Fe3Sn2 magnet with a low-quality factor. Current-induced deletions of skyrmions result from the combined effects of magnetic hysteresis and Joule thermal heating. Our results are replicated consistently through 3D micromagnetic simulations. Our approach offers a viable method for achieving reliable single-bit operations in skyrmionic devices for applications such as random-access memories. |
| title | Creating and Deleting a Single Dipolar Skyrmion by Surface Spin Twists |
| topic | Mesoscale and Nanoscale Physics Materials Science |
| url | https://arxiv.org/abs/2512.09229 |