検索対象:     
報告書番号:
※ 半角英数字
 年 ~ 
 年

Enhanced dc spin pumping into a fluctuating ferromagnet near Tc

キュリー点近傍の熱的に揺らいだ強磁性体への増幅された直流スピンポンプ

大沼 悠一*; 安立 裕人; 齊藤 英治; 前川 禎通

Onuma, Yuichi*; Adachi, Hiroto; Saito, Eiji; Maekawa, Sadamichi

A linear-response formulation of the dc spin pumping, i.e., a spin injection from a precessing ferromagnet into an adjacent spin sink, is developed in view of describing many-body effects caused by spin fluctuations in the spin sink. It is shown that, when an itinerant ferromagnet near Tc is used as the spin sink, the spin pumping is largely increased owing to the fluctuation enhancement of the spin conductance across the precessing ferromagnet/spin sink inerface. As an example, the enhanced spin pumping from yttrium iron garnet into nickel palladium alloy is analyzed by means of a self-consistent renormalization scheme, and it is predicted that the enhancement can be as large as tenfold.

Access

:

- Accesses

InCites™

:

パーセンタイル:7.41

分野:Materials Science, Multidisciplinary

Altmetrics

:

[CLARIVATE ANALYTICS], [WEB OF SCIENCE], [HIGHLY CITED PAPER & CUP LOGO] and [HOT PAPER & FIRE LOGO] are trademarks of Clarivate Analytics, and/or its affiliated company or companies, and used herein by permission and/or license.