Microwave-induced spin currents in ferromagnetic-insulator vertical bar normal-metal bilayer system

作者:Agrawal Milan*; Serga Alexander A; Lauer Viktor; Papaioannou Evangelos Th; Hillebrands Burkard; Vasyuchka Vitaliy I
来源:Applied Physics Letters, 2014, 105(9): 092404.
DOI:10.1063/1.4894636

摘要

A microwave technique is employed to simultaneously examine the spin pumping and the spin Seebeck effect processes in a YIG vertical bar Pt bilayer system. The experimental results show that for these two processes, the spin current flows in opposite directions. The temporal dynamics of the longitudinal spin Seebeck effect exhibits that the effect depends on the diffusion of bulk thermal-magnons in the thermal gradient in the ferromagnetic-insulator vertical bar normal-metal system.

  • 出版日期2014-9-1