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arXiv · 2511.05905

Antiferromagnetic skyrmion as a magnonic lens

Hongbin Wu·Zi-Wu Wang·Jin Lan
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Abstract

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.

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Hongbin Wu, Zi-Wu Wang, Jin Lan. 2025-11-08. Antiferromagnetic skyrmion as a magnonic lens. https://arxiv.org/abs/2511.05905

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