Magnetoresistance oscillations in two-dimensional electron systems under monochromatic and bichromatic radiations

TL;DR

This paper investigates magnetoresistance oscillations in high-mobility two-dimensional electron systems under monochromatic and bichromatic radiation, using a balance-equation approach, revealing the significance of frequency mixing and aligning with recent experimental results.

Contribution

It introduces a comprehensive analysis of magnetoresistance oscillations considering frequency mixing effects in bichromatic radiation, matching experimental observations.

Findings

Frequency mixing processes significantly influence oscillation patterns.

Predicted peak positions and heights agree with experimental data.

Radiation intensity affects the magnetoresistance oscillations.

Abstract

The magnetoresistance oscillations in high-mobility two-dimensional electron systems induced by two radiation fields of frequencies 31 GHz and 47 GHz, are analyzed in a wide magnetic-field range down to 100 G, using the balance-equation approach to magnetotransport for high-carrier-density systems. The frequency mixing processes are shown to be important. The predicted peak positions, relative heights, radiation-intensity dependence and their relation with monochromatic resistivities are in good agreement with recent experimental finding [M. A. Zudov {\it et al.} Phys. Rev. Lett. 96, 236804 (2006)].