Magnetic domain wall motion across a step of Dzyaloshinskii-Moriya interaction

Ik Sun Hong, Seo Won Lee, Kyoung Jin Lee

Research output: Contribution to journalArticle

4 Citations (Scopus)

Abstract

Magnetic domain wall motion is numerically studied in a nanowire with a Dzyaloshinskii-Moriya interaction (DMI) step at which DMI varies in real space. The spatially modulated DMI results in the formation of asymmetric domain wall energy landscape across the step, which affects the domain wall motion significantly. Utilizing this DMI step, we propose a domain wall memory device where the switching of up- and down-state is induced by a spin-orbit spin-transfer torque (SOT)-driven domain wall motion. This domain wall memory device is expected to have a high switching efficiency.

Original languageEnglish
Pages (from-to)1576-1581
Number of pages6
JournalCurrent Applied Physics
Volume17
Issue number12
DOIs
Publication statusPublished - 2017 Dec 1

Keywords

  • Domain wall memory device
  • Domain wall motion
  • Dzyaloshinskii-Moriya interaction
  • Magnonic crystal
  • Spin-orbit spin-transfer torque

ASJC Scopus subject areas

  • Materials Science(all)
  • Physics and Astronomy(all)

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