Late stages in the ordering of magnetic skyrmion lattices
arXiv:2010.06757 · doi:10.1103/PhysRevB.102.144434
Abstract
The late-stage ordering of interacting magnetic skyrmions is studied numerically through extensive Langevin molecular dynamics simulations. Defining skyrmion displacements that change the connectivity of cells obtained in a Voronoi tesselation as events, we investigate event histograms as a function of the time elapsed since preparing the system as well as the histograms of consecutive events as a function of the time separating these two events. These histograms, which provide unique insights into the transient properties during the ordering process of skyrmion matter, show a characteristic behavior that allows the Magnus-force dominated regime, where the Magnus force accelerates the relaxation process, to be distinguished from the noise-dominated regime, where the Magnus force enhances the effects of thermal noise. In the Magnus-force dominated regime the different histograms display power-law tails with exponents that depend on the strength of the Magnus force.
18 pages, 7 figures, accepted for publication in Physical Review B
References in corpus (11)
- Spontaneous Skyrmion Ground States in Magnetic Metals
- Skyrmion Hall Effect Revealed by Direct Time-Resolved X-Ray Microscopy
- Magnetic skyrmion logic gates: conversion, duplication and merging of skyrmions
- Theory of current-driven motion of Skyrmions and spirals in helical magnets
- Capturing of a Magnetic Skyrmion with a Hole
- A mechanism to pin skyrmions in chiral magnets
- Theory of magnetic skyrmion glass
- Skyrmion relaxation dynamics in the presence of quenched disorder
- Slow steady flow of a skyrmion lattice in a confined geometry probed by resistance narrow-band noise
- Formation process of skyrmion lattice domain boundaries: The role of grain boundaries
- Skyrmion Dynamics and Transverse Mobility: Skyrmion Hall Angle Reversal on 2D Periodic Substrates with dc and Biharmonic ac Drives