Abstract
Using a particle-based model for skyrmions, we numerically investigate the ordering processes that take place when subjecting interacting skyrmions in a narrow channel to a drive. Due to the interplay of repulsive wall–skyrmion interaction, repulsive skyrmion–skyrmion interaction, and velocity-dependent Magnus force, skyrmions are arranged in lines with different densities. In this ordering process, the Magnus force plays a facilitating role that accelerates the formation of the ordered lines when starting from a disordered initial state. Besides constant drive, we also consider the situation where the drive is periodically switched on and off, which leads to skyrmions transitioning from one arrangement to another. During this rearrangement, the Magnus force is found to impede the relaxation process.
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The datasets generated and analyzed during the current study are available from the corresponding author on reasonable request.
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All authors contributed to the study conception and design. The code was written and the data collected by JS. Both authors discussed the data. JS wrote the first draft of the manuscript, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.
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Partial financial support was received from the U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, Division of Materials Science and Engineering under Award Number DE-SC0002308.
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Stidham, J., Pleimling, M. Driven magnetic skyrmions in a narrow channel. Eur. Phys. J. Spec. Top. 232, 1835–1842 (2023). https://doi.org/10.1140/epjs/s11734-023-00800-0
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DOI: https://doi.org/10.1140/epjs/s11734-023-00800-0