SKM 2023 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 2: Skyrmions I
MA 2.2: Vortrag
Montag, 27. März 2023, 10:00–10:15, HSZ 02
Comparing Thiele-model computer simulations and experiments of skyrmion interactions and lattice formation — •Jan Rothörl1, Yuqing Ge1,2, Maarten A. Brems1, Raphael Gruber1, Mathias Kläui1, and Peter Virnau1 — 1Institut für Physik, Johannes Gutenberg-Universität Mainz — 2Department of Physics, Chalmers University of Technology, Göteborg, Sweden
Magnetic skyrmions in thin films are often described as quasi-particles evolving according to the Thiele equation. Due to their effective 2D nature, their phase behavior can be compared to phase transitions described by the KTHNY theory. To allow for this analysis, we compare experimental and simulation results for skyrmion lattice formation [1] and determine skyrmion-skyrmion interaction potentials using the Iterative Boltzmann Inversion method [2]. These resulting potentials are then compared to the work describing the dependence of the kind of 2D phase transition on the shape of particle interactions [3].
[1] Zázvorka et al., Adv. Funct. Mater. 30 (46), 2004037 (2020). [2] Ge et al., arXiv:2110.14333 [cond-mat.mtrl-sci] (2021). [3] Kapfer, Krauth, Phys. Rev. Lett. 114 (3), 035702 (2015).