Theory of spin hydrodynamic generation

Abstract

Spin-current generation by fluid motion is theoretically investigated. Based on quantum kinetic theory, the spin-diffusion equation coupled with fluid vorticity is derived. We show that spin currents are generated by the vorticity gradient in both laminar and turbulent flows and that the generated spin currents can be detected by the inverse spin Hall voltage measurements, which are predicted to be proportional to the flow velocity in a laminar flow. In contrast, the voltage in a turbulent flow is proportional to the square of the flow velocity. This study will pave the way to fluid spintronics.

5 pages, 3 figures

References in corpus (3)

• Direct electronic measurement of the spin Hall effect
• Evolution of the spin Hall effect in Pt nanowires: Size and temperature effects
• Effects of mechanical rotation on spin currents

Cited by in corpus (6)

• Fate of spin polarization in a relativistic fluid: An entropy-current analysis
• Electron spin-vorticity coupling in low and high Reynolds number pipe flows
• Gravitomagnetic Stern--Gerlach Force
• Magnonic thermal transport using the quantum Boltzmann equation
• Giant spin-vorticity coupling excited by shear-horizontal surface acoustic waves
• Acoustic Rashba-Edelstein effect