[13p-P8-1~46] 10 スピントロニクス・マグネティクス(ポスター)

▲ [13p-P8-11] Generation of spin current by spin pumping under nonlinear magnetization dynamics

〇(M2)Shingo Watanabe¹、Daichi Hirobe¹、Yuki Shiomi^1,2、Ryo Iguchi¹、Eiji Saitoh^1,2,3,4 (1.IMR, Tohoku Univ.、2.ERATO-JST.、3.WPI-AIMR, Tohoku Univ.、4.JAEA.)

キーワード：spin current, nonlinear phenomena, magnon

In the field of spintronics, a spin current, a flow of spin angular momentum, is expected to be used in carrying and processing information. Various methods of generating spin currents have been developed and investigated. The investigations, however, have been restricted to linear regime; spin-current generation in nonlinear regime has been hardly investigated despite the potential applications. One of the versatile methods of generating spin currents is a spin pumping technique, which injects spin current from magnetization dynamics across a ferromagnet / normal metal interface. In this work, we investigated spin-current generation via the spin pumping under nonlinear magnetization dynamics.