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arXiv · 2209.14179

Unidirectional magnetic coupling

H. Y. Yuan·R. Lavrijsen·R. A. Duine
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Abstract

We show that interlayer Dzyaloshinskii-Moriya interaction in combination with non-local Gilbert damping gives rise to unidirectional magnetic coupling. That is, the coupling between two magnetic layers -- say the left and right layer -- is such that dynamics of the left layer leads to dynamics of the right layer, but not vice versa. We discuss the implications of this result for the magnetic susceptibility of a magnetic bilayer, electrically-actuated spin-current transmission, and unidirectional spin-wave packet generation and propagation. Our results may enable a route towards spin-current and spin-wave diodes and further pave the way to design spintronic devices via reservoir engineering.

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H. Y. Yuan, R. Lavrijsen, R. A. Duine. 2022-09-28. Unidirectional magnetic coupling. https://arxiv.org/abs/2209.14179

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