Magnetization damping in noncollinear spin valves with antiferromagnetic interlayer couplings

Takahiro Chiba, Gerrit E.W. Bauer, Saburo Takahashi

研究成果: Article査読

16 被引用数 (Scopus)

抄録

We study the magnetic damping in the simplest of synthetic antiferromagnets, i.e., antiferromagnetically exchange-coupled spin valves, in the presence of applied magnetic fields that enforce noncolliear magnetic configurations. We formulate the dynamic exchange of spin currents in a noncollinear texture based on the spin-diffusion theory with quantum mechanical boundary conditions at the ferrromagnet/normal-metal interfaces and derive the Landau-Lifshitz-Gilbert equations coupled by the interlayer static and dynamic exchange interactions. We predict noncollinearity-induced additional damping that is modulated by an applied magnetic field. We compare theoretical results with published experiments.

本文言語English
論文番号054407
ジャーナルPhysical Review B - Condensed Matter and Materials Physics
92
5
DOI
出版ステータスPublished - 2015 8 5

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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