Work

Ratchet motion of magnetic skyrmions driven by surface acoustic sawtooth waves

Year: 2025

Type: article

Abstract: The manipulation of skyrmions by surface acoustic waves (SAWs) has garnered significant interest in the field of spintronic devices. Previous studies established that skyrmions can be generated and moved by strain pulses. In this study, we propose that sawtooth-SAWs can be used to drive a ratchet motion of magnetic skyrmions in the presence of pinning centers. This results in a net motion of the skyrmions orthogonal to the continuously applied SAW. The ratchet motion is fundamentally caused by nonvanishing pinning, so that a certain strain gradient magnitude is required to overcome pinning and start skyrmion motion. We demonstrate the feasibility of our concept by micromagnetic simulations and analytical model calculations.

Source: Physical review. B./Physical review. B

DOI: 10.1103/w75m-hlsr

Authors: Philipp Schwenke, Ephraim Spindler, Vitaliy I. Vasyuchka, Alexandre Abbass Hamadeh, Philipp Pirro, Mathias Weiler

Institution: Rheinland-Pfälzische Technische Universität Kaiserslautern-Landau

Language: English

Topic: Magnetic properties of thin films

Subfield: Atomic and Molecular Physics, and Optics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: hybrid

Funders: European Commission, Deutsche Forschungsgemeinschaft, HORIZON EUROPE Framework Programme, European Research Council

Awards: TRR 173: Spin+X: Der Spin in seiner kollektiven Umgebung, G5866656889, Spindynamik hybrider SkyrmionMagnon Solitonen