Dynamic stiffness of spin valves

Yaroslav Tserkovnyak, Arne Brataas, Gerrit E.W. Bauer

研究成果: Article査読

86 被引用数 (Scopus)

抄録

The dynamics of the magnetic order parameters of ferromagnet/paramagnet/ferromagnet spin valves and isolated ferromagnets may be very different. We investigate the role of the nonequilibrium spin-current exchange between the ferromagnets in the magnetization precession and switching. We find a (low-temperature) critical current bias for a uniform current-induced magnetization excitation in spin valves, which unifies and generalizes previous ideas of Slonczewski and Berger. In the absence of an applied bias, the effect of the spin transfer can be expressed as magnetic-configuration-dependent Gilbert damping.

本文言語English
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
67
14
DOI
出版ステータスPublished - 2003 4月 28
外部発表はい

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

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