Domain wall oscillations induced by spin torque in magnetic nanowires

R. Sbiaa, R. W. Chantrell

Research output: Contribution to journalArticle

11 Citations (Scopus)

Abstract

Using micromagnetic simulations, the effects of the non-adiabatic spin torque (β) and the geometry of nanowires on domain wall (DW) dynamics are investigated. For the case of in-plane anisotropy nanowire, it is observed that the type of DW and its dynamics depends on its dimension. For a fixed length, the critical switching current decreases almost exponentially with the width W, while the DW speed becomes faster for larger W. For the case of perpendicular anisotropy nanowire, it was observed that DW dynamics depends strongly on β. For small values of β, oscillations of DW around the center of nanowire were revealed even after the current is switched off. In addition to nanowire geometry and intrinsic material properties, β could provide a way to control DW dynamics.

Original languageEnglish
Article number053907
JournalJournal of Applied Physics
Volume117
Issue number5
DOIs
Publication statusPublished - Feb 7 2015

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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