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VOLUME 53 (1991) | ISSUE 3 | PAGE 143
Total transmission of electromagnetic waves and homogeneous plasma resonance of 2D electron gas in thin semiconductor film
The existence of a slightly dispersed homogeneous plasma (magnetoplasma) oscillations of a two-dimensional electron gas in a semiconductor layer with a large dielectric constant is predicted for the first time. The reflectivity of the film decreases rapidly and the dispersion law of nonradiative 2D plasmons changes near the resonance frequency with such collective oscillations of the 2D electron gas. The possible use of the resonance for a low-frequency 2D-electron-gas spectroscopy in the GaAs/AlGaAs heterojunctions is discussed.