Inverse Edelstein Effect: Put a spin on it and prepared to be charged

“Microscopic Theory of the Inverse Edelstein Effect” by Shen et al presents a theory of the seldom discussed inverse Edelstein effect (IEE) (or the inverse-inverse spin galvanic effect if you will), which is the conversion of a non-equilibrium spin polarization to a charge current.   The important point is made that IEE arises to due a non-equilibrium spin polarisation rather than a spin polarisation (for example caused by a static external magnetic field), and suggests a time varying magnetic field applied to a non-magnetic SOC conductor with inversion asymmetry that creates a spin density that lags behind the instantaneous spin density by the spin relaxation time would be a sensible way to produce the required non-equilibrium spin polarisation for the IEE.  Some hard to follow formalised theory follows as well as comparisons to a recent experiment:


Image: Ken Bosma, Some rights reserved