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arXiv · 2608.10902

Oscillation modes of skyrmion strings in a ferromagnetic film

Eugene M. Chudnovsky·Dmitry A. Garanin
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Abstract

It is shown that a skyrmion string in a ferromagnetic film consisting of $N$ atomic layers exhibits flexural oscillations at eigenfrequencies $|\omega_{m}|=(4J'S/\hbar)\sin^{2}[\pi m/(2N)]$, where $J'$ is the interlayer exchange coupling, $S$ is the length of the atomic spin, and $m=1,...,N-1$. This result is confirmed numerically for individual skyrmion strings in a discrete microscopic spin-lattice model of up to ten atomic layers, as well as for skyrmion-string lattices at finite temperature.

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Eugene M. Chudnovsky, Dmitry A. Garanin. 2026-08-11. Oscillation modes of skyrmion strings in a ferromagnetic film. https://arxiv.org/abs/2608.10902

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