Spin hydrodynamic generation in unsteady flows
arXiv:2210.16762 · doi:10.1016/j.jmmm.2023.170574
Abstract
We theoretically investigate a spin-mediated conversion from fluid dynamics to voltage, known as spin hydrodynamic generation (SHDG), in oscillatory and transient unsteady flows. We consider unsteady flows of liquid metal between two parallel infinite planes and then calculate its vorticity fields based on the Navier--Stokes equation for an incompressible viscous fluid. The spin accumulation and spin current generated by unsteady flows are derived using a spin-diffusion equation, including spin-vorticity coupling, which is a couple of angular momentum between electron spin and vorticity field in unsteady flows. The estimation of SHDG in liquid mercury flow suggests that an observable magnitude of voltage can be induced in unsteady flows. Our results are expected to enable the realization of high-speed spin devices with unsteady flows and broaden the range of fluid spintronics applicability.
arXiv comment7 pages, 4 figures
References in corpus (27)
- Direct electronic measurement of the spin Hall effect
- Acoustically driven ferromagnetic resonance
- Acoustic spin pumping as the origin of the long-range spin Seebeck effect
- Spin pumping with coherent elastic waves
- Nonreciprocal surface acoustic wave propagation via magneto-rotation coupling
- Mechanical generation of spin current by spin-rotation coupling
- Nonreciprocal propagation of surface acoustic wave in Ni/LiNbO3
- Effects of mechanical rotation on spin currents
- Surface acoustic wave driven ferromagnetic resonance in (Ga,Mn)(As,P) epilayers
- Nonreciprocal Dzyaloshinskii-Moriya magnetoacoustic waves
- Irreversible magnetization switching using surface acoustic waves
- Switching the magnetization of magnetostrictive nanomagnets from single-domain to non-volatile vortex states with a surface acoustic wave
- Inverse Edelstein effect induced by magnon - phonon coupling
- Large non-reciprocal propagation of surface acoustic waves in epitaxial ferromagnetic/semiconductor hybrid structures
- Theory of spin hydrodynamic generation
- Acoustic spin Hall effect in strong spin-orbit metals
- Acoustic ferromagnetic resonance and spin pumping induced by surface acoustic waves
- Acoustic parametric pumping of spin waves
- Acoustic Wave Induced FMR Assisted Spin-Torque Switching of Perpendicular MTJs with Anisotropy Variation
- Magnetoelectrical control of nonreciprocal microwave response in a multiferroic helimagnet
- Spin current generation due to mechanical rotation in the presence of impurity scattering
- Electron spin-vorticity coupling in low and high Reynolds number pipe flows
- Electrical voltage by electron spin-vorticity coupling in laminar ducts
- Generation of Spin Current from Lattice Distortion Dynamics: Spin-Orbit Routes
- Spin elastodynamic motive force
- Helicity current generation by distorted Rashba coupling
- Acoustic Rashba-Edelstein effect