Thermal Collapse of a Skyrmion

Abstract

Thermal collapse of an isolated skyrmion on a two-dimensional spin lattice has been investigated. The method is based upon solution of the system of stochastic Landau-Lifshitz-Gilbert equations for up $10^4$ spins. Recently developed pulse-noise algorithm has been used for the stochastic component of the equations. The collapse rate follows the Arrhenius law. Analytical formulas derived within a continuous spin-field model support numerically-obtained values of the energy barrier and the pre-exponential factor, and their dependence on the magnetic field. Our findings agree with experiments, as well as with recent numerical results obtained by other methods.

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Cited by in corpus (6)

• Universality of annihilation barriers of large magnetic skyrmions in chiral and frustrated magnets
• Emergence of Transient Domain Wall Skyrmions after Ultrafast Demagnetisation
• Stability of skyrmion crystal phase in antiferromagnetic triangular lattice with DMI and single-ion anisotropy
• Controllable inter-skyrmion attractions and resulting skyrmion-lattice structures in two-dimensional chiral magnets with in-plane anisotropy
• Polyhexatic and Polycrystalline States of Skyrmion Lattices
• Dynamics of the collapse of a ferromagnetic skyrmion in a centrosymmetric lattice