Kavli Affiliate: Mamoru Matsuo
| First 5 Authors: Takumi Funato, Shunichiro Kinoshita, Norihiro Tanahashi, Shin Nakamura, Mamoru Matsuo
| Summary:
We study nonequilibrium spin dynamics in differentially rotating systems,
deriving an effective Hamiltonian for conduction electrons in the comoving
frame. In contrast to conventional spin current generation mechanisms that
require vorticity, our theory describes spins and spin currents arising from
differentially rotating systems regardless of vorticity. We demonstrate the
generation of spin currents in differentially rotating systems, such as liquid
metals with Taylor-Couette flow. Our alternative mechanism will be important in
the development of nanomechanical spin devices.
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