Geometry and symmetry in skyrmion dynamics

Vladyslav M. Kuchkin, Ksenia Chichay, Bruno Barton-Singer, Filipp N. Rybakov, Stefan Blügel, Bernd J. Schroers, Nikolai S. Kiselev

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)
47 Downloads (Pure)

Abstract

The uniform motion of chiral magnetic skyrmions induced by a spin-transfer torque displays an intricate dependence on the skyrmions' topological charge and shape. We reveal surprising patterns in this dependence through simulations of the Landau-Lifshitz-Gilbert equation with Zhang-Li torque and explain them through a geometric analysis of Thiele's equation. Our results provide a universal geometrical understanding of the dependence of the skyrmion's velocity and Hall angle on the skyrmion's topological charge, shape, and orientation. The generality of our approach suggests the validity of our results for exchange-frustrated magnets, bubble materials, and other materials.

Original languageEnglish
Article number165116
JournalPhysical Review B
Volume104
Issue number16
Early online date8 Oct 2021
DOIs
Publication statusPublished - 15 Oct 2021

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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