Spin Seebeck coefficient enhancement by using Ta50W50 alloy and YIG/Ru interface

Hiromi Yuasa, Fumiya Nakata, Ryohei Nakamura, Yuichiro Kurokawa

研究成果: ジャーナルへの寄稿学術誌査読

13 被引用数 (Scopus)

抄録

This paper reports that Ta50W50 alloy has a higher spin Hall angle than that of β-W by measuring the spin Seebeck coefficients for Fe5Y3O12 (YIG)/Ru/Ta50W50 and YIG/Ru/W systems. The spin Seebeck coefficient increased by inserting Ru, and the YIG/Ru/Ta50W50 system achieved 2.4 times the magnitude of spin Seebeck coefficient of the conventional YIG/Pt system although Ru and Ta50W50 have spin Hall angles with opposite signs. Ru seems to recover the spin mixing conductance that is decreased by Ta-W oxidation at its interface with YIG. To enhance the spin Seebeck coefficient, materials having a high spin Hall angle can be combined with materials having a high spin mixing conductance.

本文言語英語
論文番号134002
ジャーナルJournal of Physics D: Applied Physics
51
13
DOI
出版ステータス出版済み - 3月 7 2018

!!!All Science Journal Classification (ASJC) codes

  • 電子材料、光学材料、および磁性材料
  • 凝縮系物理学
  • 音響学および超音波学
  • 表面、皮膜および薄膜

フィンガープリント

「Spin Seebeck coefficient enhancement by using Ta50W50 alloy and YIG/Ru interface」の研究トピックを掘り下げます。これらがまとまってユニークなフィンガープリントを構成します。

引用スタイル