Polarization dependence of microwave-induced magnetoconductivity oscillations in a two-dimensional electron gas on liquid helium
B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine 47 Nauky Ave., Kharkiv 61103, Ukraine
Received September 21, 2016
The dependence of radiation-induced dc magnetoconductivity oscillations on the microwave polarization is theoretically studied for a two-dimensional system of strongly interacting electrons formed on the surface of liquid helium. Two different theoretical mechanisms of magnetooscillations (the displacement and inelastic models) are investigated. We found that both models are similarly sensitive to a change of circular polarization, but they respond differently to a change of linear polarization. Theoretical results are compared with the recent observation of a photoconductivity response at cyclotron-resonance harmonics.
PACS: 73.40.–c Electronic transport in interface structures; PACS: 73.20.–r Electron states at surfaces and interfaces; PACS: 78.67.–n Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures; PACS: 73.25.+i Surface conductivity and carrier phenomena.
Ключевые слова: 2D electron gas, microwave radiation, magnetoconductivity oscillations, zero resistance states.