University of Minnesota
School of Physics & Astronomy


Temperature Dependence of Microwave Photoresistance in 2D Electron Systems


by A.T. Hatke, M.A. Zudov, L.N. Pfeiffer, and K.W. West in Physical Review Letters 102, 066804 (2009).

We report on the temperature dependence of microwave-induced resistance oscillations in high-mobility two-dimensional electron systems. We find that the oscillation amplitude decays exponentially with increasing temperature, as exp( - αT2) , where α scales with the inverse magnetic field. This observation indicates that the temperature dependence originates primarily from the modification of the single particle lifetime, which we attribute to electron-electron interaction effects.

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