論文

査読有り
2020年1月

Signature of spin-dependent Seebeck effect in dynamical spin injection of metallic bilayer structures

JOURNAL OF PHYSICS-MATERIALS
  • Kazuto Yamanoi
  • ,
  • Minoru Yafuso
  • ,
  • Keishi Miyazaki
  • ,
  • Takashi Kimura

3
1
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1088/2515-7639/ab45cc
出版者・発行元
IOP PUBLISHING LTD

The dynamical spin injection in a ferromagnetic/paramagnetic bilayer with various paramagnetic layers has been examined by using the inverse spin Hall effect. We adapt a CoFeB film as a ferromagnetic layer, which has a large spin dependent Seebeck coefficient. The contribution of the spin pumping was evaluated from the line-width change of the ferromagnetic resonant spectra while that of the thermal spin injection was evaluated from the heat conductivity for the paramagnetic layer. We find that the spin Hall voltage does not show the systematic change with respect to the line-width change. However, the normalized spin Hall voltage is found to increase with the heat conductivity for the paramagnetic layer. These results suggest that the thermal spin injection is a major contribution for the dynamical spin injection in CoFeB/paramagnetic bilayer systems.

Web of Science ® 被引用回数 : 1

リンク情報
DOI
https://doi.org/10.1088/2515-7639/ab45cc
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000560426900005&DestApp=WOS_CPL

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