Dresden 2026 – wissenschaftliches Programm

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MA: Fachverband Magnetismus

MA 55: Skyrmions III

MA 55.2: Vortrag

Freitag, 13. März 2026, 09:45–10:00, HSZ/0004

Accelerating Skyrmion-Based Computing via Oscillating Magnetic Fields — •Yuean Zhou¹, Thomas B. Winkler², Grischa Beneke¹, Fabian Kammerbauer¹, Robert Frömter¹, Giovanni Finocchio³, Johan H. Mentink², Davi R. Rodrigues⁴, and Mathias Kläui¹ — ¹Institut für Physik, Johannes Gutenberg-Universität Mainz, Germany — ²Radboud University, Institute for Molecules and Materials, Netherlands — ³Department of Mathematical and Computer Sciences, Physical Sciences and Earth Sciences, University of Messina, Italy — ⁴Department of Electrical and Information Engineering, Politecnico di Bari, Italy

Skyrmion-based unconventional computing architectures, including stochastic, reservoir, and probabilistic computing [1], rely on stochasticity and dynamical transitions. However, pinning effects restrict mobility in realistic device geometries. To stably enhance the dynamics, we apply an additional oscillating out-of-plane magnetic field [2], and quantify the skyrmion motion in confined geometries using Markov State Models constructed from skyrmion trajectories recorded by Kerr microscopy. The diffusion enhancement shows a distinct maximum around 25 Hz and tapers off on either side, suggesting a stochastic-resonance-driven mechanism. Micromagnetic simulations qualitatively reproduce the resonance peak, supporting this interpretation. Controlled periodic driving thus provides an effective route to boost skyrmion dynamics for unconventional computing. [1] T.B. Winkler et al., arXiv:2508.19623 (2025) [2] R. Gruber et al., Adv. Mater. 2208922 (2023)

Keywords: skyrmion dynamics; stochastic resonance