Microwave-induced resistance oscillations at low temperatures

ORAL

Abstract

At low temperatures, the amplitude of microwave-induced resistance oscillations in two dimensional electron systems is predicted to scale as $1/T^2$. In contrast to this prediction, our experiments shows that the amplitude tends to saturate at low temperatures, even in the regime of very low microwave intensities. In this talk we will discuss radiation-induced heating as a possible source of the observed saturation and ways to estimate actual temperature of irradiated 2D electrons.

*The work at Minnesota and Purdue was supported by the NSF Grant No. DMR-0548014 and DOE Grant No. DE-SC0006671, respectively. The work at Princeton was partially funded by the Gordon and Betty Moore Foundation and the NSF MRSEC Program.

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Authors

  • Peter Martin

    • School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455

  • Michael Zudov

    • School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455

  • John Watson

    • Department of Physics, Purdue University, West Lafayette, Indiana 47907

  • Michael Manfra

    • Department of Physics, Purdue University, West Lafayette, Indiana 47907

  • John Reno

    • Sandia National Laboratories, Albuquerque, New Mexico 87185

  • Loren Pfeiffer

    • Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544

  • Kenneth West

    • Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544