Microwave-induced resistance oscillations and zero-resistance states in 2D electron systems with two occupied subbands

Abstract

We report on theoretical studies of recently discovered microwave-induced resistance oscillations and zero resistance states in Hall bars with two occupied subbands. In the same results, resistance presents a peculiar shape which appears to have a built-in interference effect not observed before. We apply the microwave-driven electron orbit model, which implies a radiation-driven oscillation of the two-dimensional electron system. Thus, we calculate different intra and inter-subband electron scattering rates and times that are revealing as different microwave-driven oscillations frequencies for the two electronic subbands. Through scattering, these subband-dependent oscillation motions interfere giving rise to a striking resistance profile. We also study the dependence of irradiated magnetoresistance with power and temperature. Calculated results are in good agreement with experiments.

7 pages, 6 figures

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• Non-linear transport phenomena in a two-subband system
• Theoretical model for negative giant magnetoresistance in ultra-high-mobility 2D electron systems
• Microwave-induced zero-resistance states in a high-mobility two-subband electron system
• Microscopic theory for radiation-induced Zero-Resistance States in 2D electron systems: Franck-Condon blockade
• Microwave induced nonlocal transport in two-dimensional electron system
• Radiation-induced magnetoresistance oscillations with massive Dirac fermions
• Resonance peak shift in the photo-current of ultrahigh-mobility two-dimensional electron systems
• Radiation-induced re-emission in a 2D electron system