Polarization-selective spin wave driven domain-wall motion in antiferromagnets

Weichao Yu, Jin Lan, Jiang Xiao

Research output: Contribution to journalArticlepeer-review

11 Citations (Scopus)

Abstract

The control of magnetic domain walls is essential for magnetic-based memory and logic applications. As an elementary excitation of magnetic order, a spin wave is capable of moving magnetic domain walls just like a conducting electric current. Ferromagnetic spin waves can only be right-circularly polarized. In contrast, antiferromagnetic spin waves have full polarization degrees of freedom, including both left- and right-circular polarizations, as well as all possible linear or elliptical ones. Here we demonstrate that, due to the Dzyaloshinskii-Moriya interaction, the spin wave driven domain-wall motion in antiferromagnets strongly depends on the linear polarization direction of the injected spin waves. Steering domain-wall motion by simply tuning the polarization of spin waves offers new design principles for domain-wall based information processing devices.

Original languageEnglish
Article number144422
JournalPhysical Review B
Volume98
Issue number14
DOIs
Publication statusPublished - 2018 Oct 15

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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