Electron spin polarization induced by spin Hall effect in semiconductors with a linear in the momentum spin-orbit splitting of conduction band

TL;DR

This paper demonstrates that the spin Hall effect induces uniform electron spin polarization in semiconductors with linear momentum spin splitting, and reveals oscillating edge spin profiles without external magnetic fields.

Contribution

It introduces the concept that spin Hall effect causes uniform spin polarization and oscillating edge profiles in semiconductors with linear spin-orbit splitting.

Findings

Spin Hall effect induces uniform spin polarization.

Edge spin polarization oscillates spatially.

Oscillations occur without external magnetic fields.

Abstract

It is shown that spin Hall effect creates uniform spin polarization of electrons in semiconductor with a linear in the momentum spin splitting of conduction band. In turn, the profile of the non-uniform spin polarization accumulated at the edge of the sample oscillates in space even in the absence of an external magnetic field.