Nonlinear growth with the microwave intensity in radiation-induced magnetoresistance oscillations

Abstract

We report the observation of inverse-magnetic-field-periodic, radiation-induced magnetoresistance oscillations in GaAs/AlGaAs heterostructures prepared in W. Wegscheider's group, compare their characteristics with similar oscillations in V. Umansky's material, and describe the lineshape variation vs. the radiation power, $P$, in the two systems. We find that the radiation-induced oscillatory $\Delta R_{xx}$, in both materials, can be described by $\Delta R_{xx}=-Aexp(-\lambda /B)sin(2\pi F/B)$, where $A$ is the amplitude, $\lambda$ is the damping parameter, and $F$ is the oscillation frequency. Both $\lambda$ and $F$ turn out to be insensitive to $P$. On the other hand, $A$ grows nonlinearly with $P$.

6 pages, 6 color figures

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• Observation of linear-polarization-sensitivity in the microwave-radiation-induced magnetoresistance oscillations
• Sub-linear radiation power dependence of photo-excited resistance oscillations in two-dimensional electron systems
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• Observation of microwave-induced resistance oscillations in strained Ge/SiGe quantum wells
• Microwave-induced electron heating in the regime of radiation-induced magnetoresistance oscillations
• Magneto-transport characteristics of a 2D electron system driven to negative magneto-conductivity by microwave photoexcitation
• Combined study of microwave-power/linear-polarization dependence of the microwave-radiation-induced magnetoresistance oscillations in GaAs/AlGaAs devices
• Multiphoton microwave photoresistance in a high-mobility two-dimensional electron gas
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• Microwave-induced resistance oscillations and zero-resistance states in 2D electron systems with two occupied subbands
• Microwave-induced resistance oscillations in tilted magnetic fields
• 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
• Nonlinear response in overlapping and separated Landau levels of GaAs quantum wells
• Radiation-induced resistance oscillations in a 2D hole gas: a demonstration of a universal effect
• 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
• Evidence of radiation-driven Landau states in 2D electron systems: magnetoresistance oscillations phase shift
• Evolution of the linear-polarization-angle-dependence of the radiation-induced magnetoresistance-oscillations with microwave power
• Microwave-induced off-resonance giant magnetoresistance in ultraclean two-dimensional electron systems
• Microscopic theory for radiation-induced Zero-Resistance States in 2D electron systems: Franck-Condon blockade
• Radiation-induced magnetoresistance oscillations with massive Dirac fermions
• Multiple photoexcitation of two-dimensional electron systems: bichromatic magnetoresistance oscillations revisited
• 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
• Simultaneous Measurements of Microwave Photoresistance and Cyclotron Reflection in the Multi-Photon Regime