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VOLUME 47 (1988) | ISSUE 11 | PAGE 592
Observation of a frequency dependence of the photoconductivity under conditions of the quantum Hall effect
A photoconductivity of a 2D electron gas, which depends on the frequency of the microwave radiation, has been observed in metal-insulator-semiconductor structures based on Si(100) under conditions corresponding to the quantum Hall effect. This observation is evidence that thermally activated electrons can be photoexcited to the mobility threshold. Differences in the behavior of the photoresponse in different test samples stem from the nature of the potential relief.