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arXiv · 2502.03541

Realizing Quantitative Quasiparticle Modeling of Skyrmion Dynamics in Arbitrary Potentials

Maarten A. Brems·Tobias Sparmann·Simon M. Fröhlich·Leonie-C. Dany·Jan Rothörl·Fabian Kammerbauer·Elizabeth M. Jefremovas·Oded Farago·Mathias Kläui·Peter Virnau
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Abstract

We demonstrate fully quantitative Thiele model simulations of magnetic skyrmion dynamics on previously unattainable experimentally relevant large length and time scales by ascertaining the key missing parameters needed to calibrate the experimental and simulation time scales and current-induced forces. Our work allows us to determine complete spatial pinning energy landscapes that enable quantification of experimental studies of diffusion in arbitrary potentials within the Lifson-Jackson framework. Our method enables us to ascertain the time scales, and by isolating the effect of ultra-low current density (order $10^6 A/m^2$) generated torques we directly infer the total force acting on the skyrmion for a quantitative modelling.

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BibTeXRIS

Maarten A. Brems, Tobias Sparmann, Simon M. Fröhlich, Leonie-C. Dany, Jan Rothörl, Fabian Kammerbauer, Elizabeth M. Jefremovas, Oded Farago, Mathias Kläui, Peter Virnau. 2025-02-05. Realizing Quantitative Quasiparticle Modeling of Skyrmion Dynamics in Arbitrary Potentials. https://doi.org/10.1103/physrevlett.134.046701

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