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.

*The work at Minnesota (Purdue) was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, under Award No. ER 46640-SC0002567 (DE-SC0006671).

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