Measurement of spin current using spin relaxation modulation induced by spin injection

K. Ando, H. Nakayama, Y. Kajiwara, D. Kikuchi, K. Sasage, K. Uchida, K. Ikeda, E. Saitoh

研究成果: Article査読

12 被引用数 (Scopus)

抄録

Ferromagnetic resonance spectra affected by the spin-Hall effect (SHE) and the spin torque were measured for a Ni81 Fe19 /Pd bilayer film. A charge current applied to the Pd layer is converted into a spin current via SHE, which propagates into the Ni81 Fe19 layer through the interface as a spin current. The spin current exerts the torque on the magnetization, modulating the spin relaxation in the Ni81 Fe19 layer. By monitoring the spin relaxation modulation, we estimated the spin current amplitude injected into the Ni81 Fe19 layer. This method enables the quantitative measurement of spin currents without assuming any microscopic material parameters.

本文言語English
論文番号07C913
ジャーナルJournal of Applied Physics
105
7
DOI
出版ステータスPublished - 2009
外部発表はい

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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