Compressibility of a 2D electron gas under microwave radiation

Abstract

Microwave irradiation of a two-dimensional electron gas (2DEG) produces a non-equilibrium distribution of electrons, and leads to oscillations in the dissipative part of the conductivity. We show that the same non-equilibrium electron distribution induces strong oscillations in the 2DEG compressibility measured by local probes. Local measurements of the compressibility are expected to provide information about the domain structure of the zero resistance state of a 2DEG under microwave radiation.

arXiv commentv2: analysis of the wave-vector dependence of the compressibility added; discussion of the Hall conductivity removed (shifted to cond-mat/0409590 in a revised form)

References in corpus (12)

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Cited by in corpus (18)

• Theory of microwave-induced oscillations in the magnetoconductivity of a 2D electron gas
• Nonequilibrium phenomena in high Landau levels
• Multiphoton processes in microwave photoresistance of 2D electron system
• Mechanisms of the microwave photoconductivity in 2D electron systems with mixed disorder
• Radiation-induced oscillatory-magnetoresistance in a tilted magnetic field in $GaAs/A{l}_{x}G{a}_{1-x}As$ devices
• Microwave photoconductivity of a 2D electron gas: Mechanisms and their interplay at high radiation power
• Non-linear magnetotransport in microwave-illuminated two-dimensional electron systems
• Photo-current and photo-voltage oscillations in the two-dimensional electron system: screening and "anti-screening" of a potential profile
• Theory of the microwave-induced photocurrent and photovoltage magnetooscillations in a spatially non-uniform 2D electron gas
• Microwave absorption/reflection and magneto-transport experiments on high-mobility electron gas
• Magnetotransport of electrons in quantum Hall systems
• Quantum and classical surface acoustic wave induced magnetoresistance oscillations in a 2D electron gas
• Radiation-assisted magnetotransport in two-dimensional electron gas systems: appearance of zero resistance states
• Evidence of radiation-driven Landau states in 2D electron systems: magnetoresistance oscillations phase shift
• Magnetocapacitance oscillations and thermoelectric effect in two-dimensional electron gas irradiated by microwaves
• Microscopic theory for radiation-induced Zero-Resistance States in 2D electron systems: Franck-Condon blockade
• Radiation-induced re-emission in a 2D electron system
• Beating pattern in radiation-induced oscillatory magnetoresistance in 2DES: coupling of plasmon-like and acoustic phonon modes