Fine structure of high-power microwave-induced resistance oscillations

Abstract

We report on observation of a fine structure of microwave-induced resistance oscillations in an ultraclean two-dimensional electron gas. This fine structure is manifested by multiple secondary sharp extrema, residing beside the primary ones, which emerge at high radiation power. Theoretical considerations reveal that this fine structure originates from multiphoton-assisted scattering off short-range impurities. Unique properties of the fine structure allow us to access all experimental parameters, including microwave power, and to separate different contributions to photoresistance. Furthermore, we show that the fine structure offers a convenient means to quantitatively assess the correlation properties of the disorder potential in high-quality systems, allowing separation of short- and long-range disorder contributions to the electron mobility.

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• Observation of terahertz-induced magnetooscillations in graphene
• Microwave-induced resistance oscillations in a back-gated GaAs quantum well
• Demonstration of high sensitivity of microwave-induced resistance oscillations to circular polarization
• Two- and three-electron bubbles in Al${}_x$Ga${}_{1-x}$As/Al${}_{0.24}$Ga${}_{0.76}$As quantum wells
• Magneto-resistance oscillations induced by high-intensity terahertz radiation
• Excess electron screening of remote donors and mobility in modern GaAs/AlGaAs herostructures
• Observation of High Harmonics of the Cyclotron Resonance in Microwave Transmission of a High-Mobility Two-Dimensional Electron System
• Isotropically conducting (hidden) quantum Hall stripe phases in a two-dimensional electron gas
• Microwave response of interacting oxide two-dimensional electron systems
• Hidden Quantum Hall Stripes in Al${}_x$Ga${}_{1-x}$As/Al${}_{0.24}$Ga${}_{0.76}$As Quantum Wells
• Effect of density on microwave-induced resistance oscillations in back-gated GaAs quantum wells
• Oscillatory photoresistance on the high field side of the cyclotron resonance