AC-driven breathing mode of confined magnetic domain wall

Katsuyoshi Matsushita, Munetaka Sasaki, Jun Sato, Hiroshi Imamura

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

We theoretically clarified the properties of ac-driven breathing modes of a confined magnetic domain wall. By numerically solving equations of motion for the domain wall, we found three characteristic breathing modes: forced harmonic, regular nonharmonic, and irregular nonharmonic modes. The latter two modes are characterized by the commensurability of the oscillation amplitude of the azimuthal angle of magnetization in the domain wall with a period of the magnetic anisotropy potential. They periodically and alternatively appear as ac amplitude increases above a threshold. We also showed that the voltage signal due to the domain wall depends on the mode.

Original languageEnglish
Article number043801
Journaljournal of the physical society of japan
Volume81
Issue number4
DOIs
Publication statusPublished - 2012 Apr

Keywords

  • Ac driven dynamics
  • Breathing mode
  • Domain wall
  • Voltage signal

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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