Crystal field effects on spin pumping

Adam B. Cahaya, Alejandro O. Leon, Gerrit E.W. Bauer

研究成果: Article査読

23 被引用数 (Scopus)

抄録

"Spin pumping" is the injection of spin angular momentum by a time-dependent magnetization into an adjacent normal metal proportional to the spin mixing conductance. We study the role of electrostatic interactions in the form of crystal fields on the pumped spin currents generated by insulators with exchange-coupled local moments at the interface to a metal. The crystal field is shown to render the spin currents anisotropic, which implies that the spin mixing conductance of insulator | normal metal bilayers depends on crystal cut and orientation. We interpret the interface "effective field" (imaginary part of the spin mixing conductance) in terms of the coherent motion of the equilibrium spin density induced by proximity in the normal metal.

本文言語English
論文番号144434
ジャーナルPhysical Review B
96
14
DOI
出版ステータスPublished - 2017 10月 26

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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