Micromagnetic simulation on effect of oersted field and hard axis field in spin transfer torque switching

K. Ito, T. Devolder, C. Chappert, M. J. Carey, J. A. Katine

研究成果: Article査読

21 被引用数 (Scopus)

抄録

The effects of the current-induced Oersted field and of a hard axis applied field on spin transfer torque (STT) switching have been investigated by performing LLG micromagnetic simulations including a STT term and Gaussian thermal fluctuations. In parallel to anti-parallel switching at large currents, the C-like micromagnetic configuration induced by the Oersted field plays an important role in STT switching. In anti-parallel to parallel switching at large currents, the Oersted field induces a complicated micromagnetic configuration with several vortices. In both cases, the magnetization deviates considerably from macrospin behaviour. However, a macrospin-like behaviour is restored when a hard axis field is present.

本文言語English
論文番号S10
ページ(範囲)1261-1267
ページ数7
ジャーナルJournal of Physics D: Applied Physics
40
5
DOI
出版ステータスPublished - 2007 3 7

ASJC Scopus subject areas

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 音響学および超音波学
  • 表面、皮膜および薄膜

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