Current-driven vortex domain wall dynamics by micromagnetic simulations

J. He, Z. Li, S. Zhang

Research output: Contribution to journalArticle

76 Scopus citations

Abstract

Current-driven vortex wall dynamics is studied by means of a two-dimensional analytical model and micromagnetic simulation. By constructing a trial function for the vortex wall in the magnetic wire, we analytically solve for domain wall velocity and deformation in the presence of the current-induced spin torque. A critical current for the domain wall transformation from the vortex wall to the transverse wall is calculated. A comparison between the field- and current-driven wall dynamics is carried out. Micromagnetic simulations are performed to verify our analytical results.

Original languageEnglish (US)
Article number184408
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume73
Issue number18
DOIs
StatePublished - May 16 2006
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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