Magnetoresistance oscillations in two-dimensional electron systems under monochromatic and bichromatic radiations
X. L. Lei, S. Y. Liu
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 et al. Phys. Rev. Lett. 96, 236804 (2006)].
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