Acoustic phonon-limited resistivity in spin-orbit coupled 2DEG: Deformation potential and piezoelectric scattering

TL;DR

This paper investigates how acoustic phonon interactions, including deformation potential and piezoelectric scattering, influence the resistivity of a spin-orbit coupled 2DEG, revealing that spin-orbit coupling reduces the temperature dependence exponent in the Bloch-Gruneisen regime.

Contribution

It provides a detailed analysis of acoustic phonon-limited resistivity in Rashba spin-orbit coupled 2DEG, highlighting the impact of spin-orbit interaction on temperature-dependent behavior.

Findings

Spin-orbit coupling decreases the temperature dependence exponent in the BG regime.

Both deformation potential and piezoelectric scattering are significant in resistivity.

Resistivity behavior varies between BG and EP regimes due to spin-orbit effects.

Abstract

We study the interaction between electron and acoustic phonon in a Rashba spin-orbit coupled two dimensional electron gas using Boltzmann transport theory. Both deformation potential and piezoelectric scattering mechanisms are considered in the Bloch-Gruneisen (BG) as well as in the equipartition (EP) regimes. Effect of the Rashba spin-orbit interaction on the temperature dependence of resistivity in the BG and EP regimes has been discussed. We find effective exponent of the temperature dependence of the resistivity in the BG regime decreases due to spin-orbit coupling.