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arXiv · 2308.02826

Dynamics of Skyrmion Contraction and Expansion in a Magnetic Film

Eugene M. Chudnovsky
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Abstract

Contraction and expansion of skyrmions in ferromagnetic films are investigated. In centrosymmetric systems, the dynamics of a collapsing skyrmion is driven by dissipation. The collapse time has a minimum on the damping constant. In systems with broken inversion symmetry, the evolution of skyrmions toward equilibrium size is driven by the Dzyaloshinskii-Moriya interaction. Expressions describing the time dependence of the skyrmion size are derived and their implications for skyrmion-based information processing are discussed.

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Eugene M. Chudnovsky. 2023-08-05. Dynamics of Skyrmion Contraction and Expansion in a Magnetic Film. https://arxiv.org/abs/2308.02826

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