Phonon-induced Resistance Oscillations in Very-high Mobility 2D Electron Systems

TL;DR

This paper investigates how acoustic phonon-induced resistance oscillations in high mobility 2D electron systems vary with temperature, revealing non-monotonic behavior and sensitivity to electron-electron interactions, contrasting with Shubnikov-de Haas effects.

Contribution

It provides new insights into the temperature dependence and interaction effects on phonon-induced resistance oscillations in 2D electron systems.

Findings

Resistance oscillations are non-monotonic with temperature.

Higher order oscillations are more prominent at lower temperatures.

Oscillations are influenced by electron-electron interactions.

Abstract

We report on temperature dependence of acoustic phonon-induced resistance oscillations in very high mobility two-dimensional electron systems. We observe that the temperature dependence is non-monotonic and that higher order oscillations are best developed at progressively lower temperatures. Our analysis shows that, in contrast to Shubnikov-de Haas effect, phonon-induced resistance oscillations are sensitive to electron-electron interactions modifying the single particle lifetime.