Low-Frequency Microwave Induced Quantum Oscillations in A Two-Dimensional Electron System
arXiv:1708.08498 · doi:10.1103/PhysRevB.100.235437
Abstract
We study the magnetoresistance of an ultrahigh mobility GaAs/AlGaAs two-dimensional electron sample in a weak magnetic field under low-frequency (f < 20 GHz) microwave (MW) irradiation. We observe that with decreasing MW frequency, microwave induced resistance oscillations (MIRO) damp and multi-photon processes become dominant. At very low MW frequency (f < 4 GHz), MIRO disappears gradually and a new SdH-like oscillation develops. The analysis indicates that the new oscillation may originate from alternating Hall-field induced resistance oscillations (ac-HIRO), or can be viewed as a multi-photon process of MIRO in low MW frequency limit. Our findings bridge the non-equilibrium states of MIRO and HIRO, which can be brought into a frame of quantum tunneling junction model.
References in corpus (12)
- 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
- Giant microwave photoresistance of two-dimensional electron gas
- Evidence for current flow anomalies in the irradiated 2D electron system at small magnetic fields
- Zener Tunneling Between Landau Orbits in a High-Mobility Two-Dimensional Electron Gas
- Radiation-Induced "Zero-Resistance State" and the Photon Assisted Transport
- Magnetotransport in a two-dimensional electron system in dc electric fields
- Multiphoton processes in microwave photoresistance of 2D electron system
- Magnetoresistance Oscillations in Two-dimensional Electron Systems Induced by AC and DC Fields
- Non-linear magnetotransport in microwave-illuminated two-dimensional electron systems
- Microwave Photoresistance in dc-driven 2D Systems at Cyclotron Resonance Subharmonics