Exchange interaction effects in inter-Landau level Auger scattering in a two-dimensional electron gas

TL;DR

This paper investigates how exchange spin effects alter inter-Landau level Auger scattering in a 2D electron gas, revealing suppressed processes and nonlinear lifetime dependence due to non-equidistant Landau levels.

Contribution

It demonstrates the impact of exchange spin splitting on Auger scattering rates and Landau level spacing in a two-dimensional electron gas.

Findings

Auger processes are suppressed by exchange spin splitting.

Landau levels become non-equidistant due to spin effects.

Electron lifetime depends nonlinearly on excitation concentration.

Abstract

We consider the influence of spin effects on the inter-Landau level electron-electron scattering rate in a two-dimensional electron gas. Due to the exchange spin splitting, the Landau levels are not equidistant. This leads to the suppresion of Auger processes and a nonlinear dependence of the lifetime on the concentration of the excited electrons even at very low excitation levels.