Skyrmion propagation along curved racetracks

V. L. Carvalho-Santos, M. A. Castro, D. Salazar-Aravena, D. Laroze, R. M. Corona, S. Allende, and D. Altbir

Keywords: propagation of magnetic skyrmions, micromagnetic approach and simulations

Abstract

The interplay between curvature and magnetization is a cornerstone in magnetism. Thus, in this work, we address the role of curvature on the propagation of magnetic skyrmions along a curved race track. Using a micromagnetic approach and simulations, we observed the creation of a curvature-induced force (CIF) that acts on the skyrmion while traveling along the track. We also show that curvature can stop the skyrmion if the current density is below a critical value. Above this limit, the skyrmion goes through the defect, a direct consequence of the CIF. Our results allow a better definition of the electric current needed for moving skyrmions along curved tracks.

Más información

Título de la Revista: APPLIED PHYSICS LETTERS
Volumen: 118
Número: 17
Editorial: AMER INST PHYSICS
Fecha de publicación: 2021
Página de inicio: 172407-1
Página final: 172407-5
Idioma: Ingles
URL: https://aip.scitation.org/doi/abs/10.1063/5.0045969