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MA: Fachverband Magnetismus

MA 29: Skyrmions II

MA 29.2: Vortrag

Mittwoch, 19. März 2025, 15:15–15:30, H20

Surface acoustic wave based movement of skyrmions — •Philipp Schwenke, Ephraim Spindler, Vitaliy Vasyuchka, Philipp Pirro, Abbass Hamadeh, and Mathias Weiler — Fachbereich Physik and Landesforschungszentrum OPTIMAS, Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau, 67663 Kaiserslautern, Germany

Magnetic skyrmions have significant potential for utilization in spintronic devices, primarily due to their stability and the ability to be manipulated by electric currents. However, when a current is applied, the skyrmions do not move in a direction parallel to the current flow due to the skyrmion Hall effect [1]. Consequently, the precise control of their movement is challenging. Recently, it has been demonstrated that a skyrmion can be moved using a surface acoustic wave (SAW) [2]. Here, we propose an alternative scheme for acoustic manipulation of magnetic skyrmions. Our approach is based on exploiting skyrmion pinning and non-sinusoidal SAWs. To demonstrate feasibility of our approach, we performed micromagnetic simulations using Mumax in a realistic pinning energy landscape.
[1] G.Chen et. al, Nature Phys. 13, 112-113 (2017)
[2] Y.Yang et. al, Nat. Commun. 15, 1018 (2024)

Keywords: Skyrmions; Surface acoustic wave