Spin current generation due to mechanical rotation in the presence of impurity scattering

TL;DR

This paper theoretically explores how mechanical rotation can generate spin currents in materials with impurity scattering, highlighting the role of magnetic fields and the inverse spin Hall effect for detection.

Contribution

It introduces a theoretical model for spin current generation due to rotation considering impurity scattering and magnetic fields, and proposes detection via the inverse spin Hall effect.

Findings

Spin current is mainly generated radially under rotation with magnetic field.

The inverse spin Hall effect can detect rotation-induced spin currents.

Spin accumulation is estimated through the spin diffusion equation.

Abstract

We theoretically investigate the generation of spin current from a uniformly rotating body with impurity scattering on the basis of the spin dependent transport equation. The spin current is created mainly in the radial direction when a weak magnetic field, where the cyclotron frequency is smaller than the inverse of the relaxation time due to the impurity scattering, is applied parallel to the rotation axis. Spin accumulation is estimated by solving the spin diffusion equation. We show that the inverse spin Hall effect can be used to detect the spin current induced by rotation.