Fermi Liquid Model of Radiation Induced Magnetoresistance Oscillations in GaAs/Al$_x$Ga$_{1-x}$As Heterostructure Two-Dimensional Electron System: Theoretical Evidence of an Electron Reservoir

TL;DR

This paper presents a theoretical model based on Fermi liquid theory and an electron reservoir hypothesis that accurately reproduces radiation-induced magnetoresistance oscillations in GaAs/AlGaAs heterostructures, aligning with experimental data.

Contribution

The study introduces a novel theoretical framework combining Fermi liquid theory and an electron reservoir concept to explain magnetoresistance oscillations.

Findings

Model reproduces experimental oscillation patterns

Oscillations are independent of radiation polarization

Excellent agreement with observed data

Abstract

The magnetoresistance oscillations in GaAs/Al$_x$Ga$_{1-x}$As heterostructures induced by millimeterwave radiation recently observed by Zudov et al. [Phys. Rev. B {\bf 64}, 201311 (2001)] is theoretically reproduced by introducing a model based on the finite temperature Fermi liquid theory of dc conductivity and the electron reservoir hypothesis. The obtained oscillation patterns show excellent agreement with the experimental result by Zudov et al. and are independent of the polarization of the radiation field in accordance with the experimental observation by Smet et al. [Phys. Rev. Lett. {\bf 95}, 116804 (2005)].