Mechanical generation of spin current

Harii, Kazuya; Matsuo, Mamoru; Takahashi, Ryo; Ono, Masao; Ieda, Junichi; Chudo, Hiroyuki; Okayasu, Satoru; Maekawa, Sadamichi; Saito, Eiji

no journal, , 

Spin current, a flow of spins, is a key concept in the field of spintronics. It is generated by using angular momentum conversion between magnetization, photon, electric current and so on. On the other hand, mechanical angular momentum due to mechanical motion has not been utilized for spin-current generation so far. In this talk, we discuss theoretical and experimental results for spin-current generation from mechanical motion. The spin-current generation by mechanical motion stems from the spin-rotation coupling, which is the fundamental interaction between spin angular momentum and rotational motion.