Electron spin operation by electric fields: spin dynamics and spin injection

TL;DR

This paper explores how electric fields can manipulate electron spins via spin-orbit interaction, comparing mechanisms, optimizing conditions, and discussing spin injection and Coulomb effects in low-dimensional conductors.

Contribution

It provides a comprehensive comparison of spin-orbit mechanisms, establishes optimal electric control conditions, and discusses spin injection and Coulomb effects in low-dimensional systems.

Findings

Optimal conditions for electric spin control in quantum wells.

Comparison of different spin-orbit interaction mechanisms.

Significant impact of Coulomb interactions on transport phenomena.

Abstract

Spin-orbit interaction couples electron spins to electric fields and allows electrical monitoring of electron spins and electrical detection of spin dynamics. Competing mechanisms of spin-orbit interaction are compared, and optimal conditions for the electric operation of electrons spins in a quantum well by a gate voltage are established. Electric spin injection into semiconductors is discussed with a special emphasis on the injection into ballistic microstructures. Dramatic effect of a long range Coulomb interaction on transport phenomena in space-quantized low-dimensional conductors is discussed in conclusion.