2012•Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIERequires access
Thickness dependence of spin pumping at YIG/Pt interface
Takayuki Tashiro, Ryo Takahashi, Y. Kajiwara, Kazuya Ando, Hiroyasu Nakayama, Takashi Yoshino, Daisuke Kikuchi, Eiji Saitoh
Open publisher page 6 citations
Abstract
We report Y3Fe5O12 thickness dependence of spin pumping, spin current generation from magnetization dynamics, in magnetic insulator Y3Fe5O12/metal Pt bilayer films. We prepared different thickness Y3Fe5O12 films by the metal-organic decomposition method and measured the electromotive force due to the inverse spin Hall effect induced by the spin pumping in Y3Fe5O12/Pt films. We found that spin-mixing conductance, or spin-pumping efficiency, Y3Fe5O12/Pt films constant for the different thickness is almost same in various Y3Fe5O12 thickness. This result is consistent with the prediction of the spin pumping; the spin-pumping efficiency is determined by the exchange interaction at the Y3Fe5O12/Pt interface. Keywords: Spintronics, Spin pumping, Spin current, Inverse spin Hall effect