Disturbances in the orientation of magnetization in a magnet can propagate as spin waves or magnons. A design that makes it possible to optically excite nanoscale spin waves offers a route to developing miniaturized spin-based devices.
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The authors declare no competing interests.
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Kamra, A., Johnsen, L.G. Nanoscale spin waves get excited. Nat. Phys. (2023). https://doi.org/10.1038/s41567-022-01919-y