Sub-linear radiation power dependence of photo-excited resistance oscillations in two-dimensional electron systems

Abstract

We find that the amplitude of the $R_{xx}$ radiation-induced magnetoresistance oscillations in GaAs/AlGaAs system grows nonlinearly as $A\propto P^{\alpha }$ where $A$ is the amplitude and the exponent $\alpha <1$. %, with $\alpha \to 1/2$ in %the low temperature limit. This striking result can be explained with the radiation-driven electron orbits model, which suggests that the amplitude of resistance oscillations depends linearly on the radiation electric field, and therefore on the square root of the power, $P$. We also study how this sub-linear power law varies with lattice temperature and radiation frequency.

5 pages, 3 figures

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Cited by in corpus (20)

• Observation of linear-polarization-sensitivity in the microwave-radiation-induced magnetoresistance oscillations
• Magneto-transport characteristics of a 2D electron system driven to negative magneto-conductivity by microwave photoexcitation
• Multiphoton microwave photoresistance in a high-mobility two-dimensional electron gas
• Combined study of microwave-power/linear-polarization dependence of the microwave-radiation-induced magnetoresistance oscillations in GaAs/AlGaAs devices
• Comparative study of microwave radiation-induced magnetoresistive oscillations induced by circularly- and linearly- polarized photo-excitation
• Microwave-induced resistance oscillations and zero-resistance states in 2D electron systems with two occupied subbands
• Theoretical model for negative giant magnetoresistance in ultra-high-mobility 2D electron systems
• Remotely sensed transport in microwave photoexcited GaAs/AlGaAs two-dimensional electron system
• Remote sensor response study in the regime of the microwave radiation-induced magnetoresistance oscillations
• Enhancement of edge channel transport by a low frequency irradiation
• Linear polarization study of microwave-radiation-induced magnetoresistance oscillations: Comparison of power dependence to theory
• Evolution of the linear-polarization-angle-dependence of the radiation-induced magnetoresistance-oscillations with microwave power
• Evidence of radiation-driven Landau states in 2D electron systems: magnetoresistance oscillations phase shift
• Microscopic theory for radiation-induced Zero-Resistance States in 2D electron systems: Franck-Condon blockade
• Radiation-induced magnetoresistance oscillations with massive Dirac fermions
• Resonance peak shift in the photo-current of ultrahigh-mobility two-dimensional electron systems
• Beating pattern in radiation-induced oscillatory magnetoresistance in 2DES: coupling of plasmon-like and acoustic phonon modes
• Radiation-induced re-emission in a 2D electron system
• Fourier transform analysis of irradiated Weiss oscillations
• Frequency-dependent polarization-angle-phase-shift in the microwave-induced magnetoresistance oscillations