Theory of resonant spin Hall effect

TL;DR

This paper reviews the resonant spin Hall effect, where a small electric field induces a saturated spin current in 2D electron or hole gases under magnetic fields, due to energy level crossings from spin-orbit and Zeeman effects.

Contribution

It provides a comprehensive summary of recent theoretical advances and discusses experimental possibilities for observing the resonant spin Hall effect.

Findings

Resonant spin Hall effect occurs at energy level crossings.

A tiny electric field can induce saturated spin currents.

The effect is linked to spin-orbit coupling and Zeeman splitting.

Abstract

A biref review is presented on resonant spin Hall effect, where a tiny external electric field induces a saturated spin Hall current in a 2-dimensional electron or hole gas in a perpendicular magnetic field. The phenomenon is attributted to the energy level crossing associated with the spin-orbit coupling and the Zeeman splitting. We summarize recent theoretical development of the effect in various systems and discuss possible experiments to observe the effect.