Current-induced magnetization dynamics in two magnetic insulators separated by a normal metal

Hans Skarsvåg, Gerrit E.W. Bauer, Arne Brataas

研究成果: Article査読

6 被引用数 (Scopus)

抄録

We study the dynamics of spin valves consisting of two layers of magnetic insulators separated by a normal metal in the macrospin model. A current through the spacer generates a spin Hall current that can actuate the magnetization via the spin-transfer torque. We derive expressions for the effective Gilbert damping and the critical currents for the onset of magnetization dynamics including the effects of spin pumping that can be tested by ferromagnetic resonance experiments. The current generates an amplitude asymmetry between the in-phase and out-of-phase modes. We discuss superlattices of stacked films of metals and magnetic insulators.

本文言語English
論文番号054401
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
90
5
DOI
出版ステータスPublished - 2014 8 4

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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