Regensburg 2025 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 6: Skyrmions I
MA 6.5: Vortrag
Montag, 17. März 2025, 16:15–16:30, H16
Skyrmion at finite temperature — •Thorben Pürling1,2 and Stefan Blügel1,2 — 1Peter Grünberg Institut, Forschungszentrum Jülich and JARA, 52425 Jülich, Germany — 2Physics Department, RWTH Aachen University, 52062 Aachen, Germany
In the past decade magnetic skyrmions have been under intense scientific scrutiny. Key properties of magnetic skyrmions such as the radius have been shown to exhibit highly nonlinear behavior as a function of the microscopic interaction parameters representing Heisenberg exchange, Dyzaloshinskii-Moriya interaction (DMI) and magnetic anisotropy [1]. Due to thermal fluctuations in both spin and lattice degrees of freedom, these interaction strengths carry an effective temperature dependence. Hence, temperature should demonstrate a strong effect on quantities like the skyrmion radius. Surprisingly little work has been done in this direction, particularly when it comes to taking lattice vibrations into account. Here we present our first attempts at investigating the role of the lattice dynamics on relevant interaction parameters.
We acknowledge funding from the ERC grant 856538 (project "3D MAGIC") and DFG through SFB-1238 (project C1).
[1] H. Jia et al., Phys. Rev. Materials 4, 094407 (2020).
Keywords: Skyrmions; Spin dynamics; Spin-Lattice Dynamics; Magnetic anisotropy