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MA: Fachverband Magnetismus

MA 46: Poster II

MA 46.7: Poster

Thursday, March 21, 2024, 15:00–18:00, Poster C

Coarse-Grained Computer Simulations of Skyrmions — •Simon Fröhlich, Jan Rothörl, Maarten A. Brems, Tobias Sparmann, Raphael Gruber, Mathias Kläui, and Peter Virnau — Institute of Physics, Johannes Gutenberg Universität, Mainz, Deutschland

Magnetic skyrmions are often described as 2D quasi-particles governed by the Thiele equation [1]. This abstraction allows for simulations of a large number of skyrmions on experimentally relevant time scales [2]. To accurately describe the experimental behavior, we determine an effective interaction potential [3] as well as a description of skyrmion pinning [4]. We will also discuss first ideas for matching experimental and simulation time scales to capture real dynamics in quasi-particle simulations.

[1] A. A. Thiele, Phys. Rev. Lett. 30, 230 (1973)

[2] J. Zázvorka et al., Adv. Funct. Mater, 30, 2004037 (2020)

[3] Y. Ge et al., Commun. Phys. 6, 30 (2023)

[4] R. Gruber et al., Nat. Commun. 13, 3144 (2022)

Keywords: Skyrmions; Thiele-Equation; Skyrmion pinning; Skyrmion interactions; Computer simulation