Magnetic field dependence of the high-frequency capacitive response of a 2-dimensional electron gas in the quantum hall regime

Research paper by A. M. C. Valkering, P. K. H. Sommerfeld, R. A. M. van de Ven, R. W. van der Heijden, F. A. P. Blom

Indexed on: 01 May '96Published on: 01 May '96Published in: Czechoslovak Journal of Physics


The rf-transmission between two antennas coupling capacitively to a 2-dimensional electron gas at a GaAs-AlGaAs heterojunction is investigated as a function of magnetic field <6 T and frequency <600 MHz at a temperatureT∼1.5 K. It is found that the coupling between the antennas terminates at the frequency of an edge magnetoplasma resonance, both on and outside the Quantum Hall plateaus.