Microwave Induced Zero-Conductance State in a Corbino Geometry 2D Electron Gas with Capacitive Contacts

Abstract

Microwave induced photoconductivity of a two-dimensional electron gas (2DEG) in selectively-doped GaAs/AlAs heterostructures has been studied using the Corbino geometry with capacitive contacts at a temperature T=1.6K and magnetic field B up to 0.5 T. Zero-conductance states have been observed in the samples under study subject to microwave radiation, similarly to the samples with ohmic contacts. It has been shown that ohmic contacts do not play a significant role for observation of zero-conductance states induced by microwave radiation

5 pages, 4 figures

References in corpus (9)

• Theory of microwave-induced oscillations in the magnetoconductivity of a 2D electron gas
• Observation of Apparently Zero-Conductance States in Corbino Samples
• Mechanisms of the microwave photoconductivity in 2D electron systems with mixed disorder
• Are Microwave Induced Zero Resistance States Necessarily Static?
• Giant Magnetoresistance Oscillations Induced by Microwave Radiation and a Zero-Resistance State in a 2D Electron System with a Moderate Mobility
• Quantum oscillations in the microwave magnetoabsorption of a 2D electron gas
• Non-linear Magnetoresistance Oscillations in Intensely Irradiated Two-Dimensional Electron Systems Induced by Multi-Photon Processes
• 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

Cited by in corpus (7)

• Nonequilibrium phenomena in high Landau levels
• Theory of the microwave induced zero resistance states in two-dimensional electron systems
• Microwave photoresistance in a two-dimensional electron gas with separated Landau levels
• Demonstration of high sensitivity of microwave-induced resistance oscillations to circular polarization
• Microwave-induced zero-resistance" states and second-harmonic generation in an ultraclean two-dimensional electron gas
• Observation of High Harmonics of the Cyclotron Resonance in Microwave Transmission of a High-Mobility Two-Dimensional Electron System
• Effect of density on microwave-induced resistance oscillations in back-gated GaAs quantum wells