2017年7月
Spin pumping into superconductors: A new probe of spin dynamics in a superconducting thin film
PHYSICAL REVIEW B
- ,
- ,
- 巻
- 96
- 号
- 2
- 開始ページ
- 239
- 終了ページ
- 249
- 記述言語
- 英語
- 掲載種別
- 研究論文(学術雑誌)
- DOI
- 10.1103/PhysRevB.96.024414
- 出版者・発行元
- AMER PHYSICAL SOC
Spin pumping refers to the microwave-driven spin current injection from a ferromagnet into the adjacent target material. We theoretically investigate the spin pumping into superconductors by fully taking account of impurity spin-orbit scattering that is indispensable to describe diffusive spin transport with finite spin diffusion length. We calculate temperature dependence of the spin pumping signal and show that a pronounced coherence peak appears immediately below the superconducting transition temperature T-c, which survives even in the presence of the spin-orbit scattering. The phenomenon provides us with a new way of studying the dynamic spin susceptibility in a superconducting thin film. This is contrasted with the nuclear magnetic resonance technique used to study a bulk superconductor.
- リンク情報
- ID情報
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- DOI : 10.1103/PhysRevB.96.024414
- ISSN : 2469-9950
- eISSN : 2469-9969
- Web of Science ID : WOS:000405363500003