Helicity current generation by distorted Rashba coupling
arXiv:2105.04804 · doi:10.1103/PhysRevB.104.L060412
Abstract
We theoretically study spin transport in two-or three-dimensional Rashba systems dynamically distorted by surface acoustic waves. The spin currents in the linear response to lattice distortion dynamics are calculated on the basis of a microscopic theory combined with local coordinate transformations. As a result, we find a mechanism of direct spin-current generation from lattice distortion not associated with a charge current or spin accumulation. Moreover, the in-plane helicity currents are generated by shear surface acoustic waves via the present mechanism. The generated helicity currents are not parallel to the vorticity of the lattice, and cannot be created with the conventional methods. Thus, our findings offer an alternative functionality of the conventional Rashba systems in the field of spintronics.
References in corpus (23)
- Spintronics: Fundamentals and applications
- Spin Hall effect
- Universal Intrinsic Spin-Hall Effect
- New Perspectives for Rashba Spin-Orbit Coupling
- Dissipationless Quantum Spin Current at Room Temperature
- On A Proper Definition of Spin Current
- Theory of Spin Hall conductivity in n-doped GaAs
- Ultrafast spin-lasers
- Mechanical generation of spin current by spin-rotation coupling
- Effects of mechanical rotation on spin currents
- Experimental observation of spin to charge current conversion at non-magnetic metal/Bi2O3 interfaces
- Spin-dependent inertial force and spin current in accelerating systems
- Theory of spin hydrodynamic generation
- Spin Accumulation in the Extrinsic Spin Hall Effect
- Acoustic spin Hall effect in strong spin-orbit metals
- Giant magneto-optical response in non-magnetic semiconductor BiTeI driven by bulk Rashba spin splitting
- 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
- Theory of electromagnetic wave propagation in ferromagnetic Rashba conductor
- Generation of Spin Current from Lattice Distortion Dynamics: Spin-Orbit Routes
- Spin-charge conversion and current vortex in spin-orbit coupled systems
- Extrinsic spin Hall effect in inhomogeneous systems