Ferrimagnetic domain wall motion induced by damping-like spin-orbit torque

Se Hyeok Oh, Kyoung Jin Lee

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

We theoretically and numerically investigate ferrimagnetic domain wall motion driven by damping-like spin-orbit torque. We find that the damping-like spin-orbit torque combined with the interfacial Dzyaloshinskii-Moriya interaction efficiently drives the ferrimagnetic domain wall especially at the angular momentum compensation point. We obtain the analytic expression of the domain wall velocity with respect to the current density and the net spin density, which is in agreement with numerical simulation. The analytic expression is applicable to arbitrary compensation conditions, ranging from the ferromagnetic limit to the antiferromag-netic limit, and is thus useful to design and interpret ferrimagnetic domain wall experiments at various temperatures or compositions.

Original languageEnglish
Pages (from-to)196-200
Number of pages5
JournalJournal of Magnetics
Volume23
Issue number2
DOIs
Publication statusPublished - 2018 Jan 1

Keywords

  • Angular momentum compensation
  • Dzyaloshinskii-moriya interaction
  • Ferrimagnetic domain wall
  • Spin-orbit torque

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

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