Photo-current and photo-voltage oscillations in the two-dimensional electron system: screening and "anti-screening" of a potential profile

Abstract

We observe in state-of-the-art GaAs based 2D electron systems microwave induced photo-current and photo-voltage oscillations around zero as a function of the applied magnetic field. The photo-signals pass zero whenever the microwave frequency is close to a multiple of the cyclotron resonance frequency. They originate from built-in electric fields due to for instance band bending at contacts. The oscillations correspond to a suppression (screening) or an enhancement ("anti-screening") of these fields by the photo-excited electrons.

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Cited by in corpus (17)

• Nonequilibrium phenomena in high Landau levels
• Mechanisms of the microwave photoconductivity in 2D electron systems with mixed disorder
• Role of electron-electron interactions in nonlinear transport in 2D electron systems
• Sub-linear radiation power dependence of photo-excited resistance oscillations in two-dimensional electron systems
• Nonlinear resistance of 2D electrons in crossed electric and magnetic fields
• Resonant Photovoltaic Effect in Surface-State Electrons on Liquid Helium
• Theory of the microwave-induced photocurrent and photovoltage magnetooscillations in a spatially non-uniform 2D electron gas
• Microwave-induced resistance oscillations and zero-resistance states in 2D electron systems with two occupied subbands
• Observation of terahertz-induced magnetooscillations in graphene
• Quantum lifetime of 2D electron in magnetic field
• Microwave Induced Zero-Conductance State in a Corbino Geometry 2D Electron Gas with Capacitive Contacts
• Microwave-Induced Oscillations in the Magnetocapacitance: Direct Evidence for Non-equilibrium Occupation of Electronic States
• Microwave-induced magnetooscillations and signatures of zero-resistance states in phonon-drag voltage in two-dimensional electron systems
• Negative conductivity and anomalous screening in two-dimensional electron systems subjected to microwave radiation
• Quantum oscillations of dissipative resistance in crossed electric and magnetic fields
• Magnetocapacitance oscillations and thermoelectric effect in two-dimensional electron gas irradiated by microwaves
• Multiple photoexcitation of two-dimensional electron systems: bichromatic magnetoresistance oscillations revisited