Density dependence of the effective mass in a GaAs quantum well

POSTER

Abstract

We performed effective mass measurements employing microwave-induced resistance oscillation in a tunable-density GaAs/AlGaAs quantum well. Our main result is a clear observation of an effective mass increase with decreasing density, in general agreement with earlier studies which investigated the density dependence of the effective mass employing Shubnikov–de Haas oscillations. This finding provides further evidence that microwave-induced resistance oscillations are sensitive to electron-electron interactions and offer a convenient and accurate way to obtain the effective mass.

Presenters

  • X Fu

    Univ of Minn - Minneapolis, University of Minnesota

Authors

  • X Fu

    Univ of Minn - Minneapolis, University of Minnesota

  • Q Ebner

    Univ of Minn - Minneapolis

  • Qianhui Shi

    Univ of Minn - Minneapolis

  • Michael Zudov

    Univ of Minnesota, Univ of Minn - Minneapolis, University of Minnesota

  • Qi Qian

    Physics, Purdue University, Purdue University, Purdue Univ

  • John Watson

    Microsoft Station-Q at Delft University of Technology, Purdue University

  • Michael Manfra

    Department of Physics and Astronomy and Station Q Purdue, Purdue University, Department of Physics and Astronomy and Microsoft Station Q Purdue, Purdue University, Purdue University, Physics, Purdue University, Purdue University, Station Q Purdue, Purdue Univ, Department of Physics and Astronomy, and School of Materials Engineering, and School of Electrical and Computer Engineering, Purdue University, Physics and Astronomy, Purdue University, Dept. of Physics and Astronomy, Purdue Univ