Mechanical generation of spin current
نویسندگان
چکیده
Spin current, a flow of spins, is a key concept in the field of spintronics. It is generated by using angular momentum conversion among magnetic angular momentum due to magnetization dynamics, photon angular momentum, angular momentum due to orbital motion of electron, and spin angular momentum [1–3]. Meanwhile, mechanical angular momentum carried by condensed matter systems due to macroscopic motion has not been utilized for spin-current generation, which might be useful in nano-electromechanical systems (NEMS). In the following, we provide the theory of the coupling between mechanical angular momentum and spin current, and show that spin current can be generated from mechanical motion including rigid rotation and elastic deformations (Figure 1).
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