Photo-Conductivity Response at Cyclotron-Resonance Harmonics in a Non-Degenerate 2D Electron Gas on Liquid Helium
arXiv:1508.06004 · doi:10.1103/PhysRevLett.115.256802
Abstract
We report the first observation of an oscillatory photo-conductivity response at the cyclotron-resonance harmonics in a non-degenerate 2D electron system formed on the free surface of liquid helium. The dc conductivity oscillations are detected for electrons occupying the ground surface subband. Their period is governed by the ratio of the microwave frequency to the cyclotron frequency. Theoretical analysis of the photo-response in a strongly interacting electron system indicates that the observation can be explained by an oscillatory correction to the electron distribution function that appears for a large inelastic relaxation time because of photon-assisted scattering.
5 pages, 3 figures
References in corpus (14)
- Evidence for a New Dissipationless Regime in 2D Electronic Transport
- Radiation-Induced Magnetoresistance Oscillations in a 2D Electron Gas
- Theory of microwave-induced oscillations in the magnetoconductivity of a 2D electron gas
- Nonequilibrium phenomena in high Landau levels
- Cyclotron resonance harmonics in the ac response of a 2D electron gas with smooth disorder
- Observation of Apparently Zero-Conductance States in Corbino Samples
- Nonlinear effects in microwave photoconductivity of two-dimensional electron systems
- Novel Radiation-induced Magnetoresistance Oscillations in a Nondegenerate 2DES on Liquid Helium
- Photon-induced vanishing of magnetoconductance in 2D electrons on liquid He
- Microwave saturation of the Rydberg states of electrons on helium
- Microwave-resonance-induced magnetooscillations and vanishing resistance states in multisubband two-dimensional electron systems
- Coulombic effects on magnetoconductivity oscillations induced by microwave excitation in multisubband two-dimensional electron systems
- Microwave-induced magnetooscillations and absolute negative conductivity in the multisubband two-dimensional electron system on liquid helium
- Photon-assisted scattering and magnetoconductivity oscillations in a strongly correlated 2D electron system formed on the surface of liquid helium
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- Hall field-induced resistance oscillations in MgZnO/ZnO heterostructures
- Strong coupling of the cyclotron motion of surface electrons on liquid helium to a microwave cavity
- Demonstration of high sensitivity of microwave-induced resistance oscillations to circular polarization
- Sign-alternating photoconductivity and magnetoresistance oscillations induced by terahertz radiation in HgTe quantum wells
- Floquet theory of microwave absorption by an impurity in two dimensional electron gas
- Magneto-oscillations and anomalous current states in a photo-excited electron gas on liquid helium
- Observation of High Harmonics of the Cyclotron Resonance in Microwave Transmission of a High-Mobility Two-Dimensional Electron System
- Can warmer than room temperature electrons levitate above a liquid helium surface ?