University of Minnesota
School of Physics & Astronomy

Condensed Matter Seminar

Thursday, September 17th 2009
1:25 pm:
Condensed Matter Seminar in 210 Physics
Speaker: Maxim Vavilov, University of Wisconsin - Madison
Subject: Microwave photoconductivity in 2D electron systems with mixed disorder.

I will present a systematic study of the microwave-induced oscillations in the magnetoresistance of a 2D electron gas for mixed disorder including both short-range and long-range components. I will discuss four distinct contributions to the photoconductivity tensor and show that the photoresponse depends crucially on the relative weight of the short-range component of disorder. Depending on the properties of disorder, the theory allows us to identify the temperature range within which the photoresponse is dominated by one of the mechanisms.

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