Antiferromagnetic skyrmion as a magnonic lens
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arXiv
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| Main Authors: | , , |
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| Format: | Preprint |
| Published: |
2025
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| _version_ | 1866908638610718720 |
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| author | Wu, Hongbin Wang, Zi-Wu Lan, Jin |
| author_facet | Wu, Hongbin Wang, Zi-Wu Lan, Jin |
| contents | A lens, a device transforming propagation directions in an organized fashion, is one of the fundamental tools for wave manipulation. Spin wave, the collective excitation of ordered magnetizations, stands out as a promising candidate for future energy-saving information technologies. Here we propose theoretically and verify by micromagnetic simulations, that an antiferromagnetic skyrmion naturally serves as a lens for spin wave, when the Dzyaloshinskii-Moriya strength exceeds a threshold. The underlying mechanism is the spin wave deflection caused by Dzyaloshinskii-Moriya interaction, a mechanism that is ordinarily overshadowed by the magnetic topology. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2511_05905 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Antiferromagnetic skyrmion as a magnonic lens Wu, Hongbin Wang, Zi-Wu Lan, Jin Mesoscale and Nanoscale Physics A lens, a device transforming propagation directions in an organized fashion, is one of the fundamental tools for wave manipulation. Spin wave, the collective excitation of ordered magnetizations, stands out as a promising candidate for future energy-saving information technologies. Here we propose theoretically and verify by micromagnetic simulations, that an antiferromagnetic skyrmion naturally serves as a lens for spin wave, when the Dzyaloshinskii-Moriya strength exceeds a threshold. The underlying mechanism is the spin wave deflection caused by Dzyaloshinskii-Moriya interaction, a mechanism that is ordinarily overshadowed by the magnetic topology. |
| title | Antiferromagnetic skyrmion as a magnonic lens |
| topic | Mesoscale and Nanoscale Physics |
| url | https://arxiv.org/abs/2511.05905 |