Inertia and chiral edge modes of a skyrmion magnetic bubble
arXiv:1208.3123 · doi:10.1103/PhysRevLett.109.217201
Abstract
The dynamics of a vortex in a thin-film ferromagnet resembles the motion of a charged massless particle in a uniform magnetic field. Similar dynamics is expected for other magnetic textures with a nonzero skyrmion number. However, recent numerical simulations revealed that skyrmion magnetic bubbles show significant deviations from this model. We show that a skyrmion bubble possesses inertia and derive its mass from the standard theory of a thin-film ferromagnet. Besides center-of-mass motion, other low energy modes are waves on the edge of the bubble traveling with different speeds in opposite directions.
updated simulation details
References in corpus (5)
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- Fundamental Theory of Current-Induced Motion of Magnetic Skyrmions
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- Skyrmion Mass from Spin-Phonon Interaction
- How a skyrmion can appear both massive and massless
- Quantum Depinning of a Magnetic Skyrmion
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- Eigenmodes of magnetic skyrmion lattices
- Emergent elastic waves in skyrmion crystals with finite frequencies at long wavelength limit