Quantum Hall stripes with a reduced transport anisotropy at half-filled Landau levels in GaAs quantum wells

POSTER

Abstract

It is well known that the hard (easy) resistance due to formation of quantum Hall stripes in high Landau levels of a two-dimensional electron gas exhibits a maximum (minimum) at half-integer filling factors. Here, we report the opposite behavior, namely a local minimum (maximum) in the hard (easy) resistance at half-filling. This talk will discuss our experimental observations in several samples including the temperature dependence of the resistance anisotropy and the response to the in-plane magnetic field applied parallel or perpendicular to the native stripes.

*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). The work at Princeton University was funded by the Gordon and Betty Moore Foundation through the EPiQS initiative Grant GBMF4420, and by the NSF MRSEC Grant DMR-1420541. A portion of this work was performed at the National High Magnetic Field Laboratory, which is supported by National Science Foundation Cooperative Agreement No. DMR-1644779 and the State of Florida.

Presenters

  • Michael Zudov

    • University of Minnesota
    • Physics, University of Minnesota

Authors

  • Michael Zudov

    • University of Minnesota
    • Physics, University of Minnesota

  • Xiaojun Fu

    • University of Minnesota

  • Qianhui Shi

    • University of Minnesota
    • Columbia University

  • Geoffrey Gardner

    • Department of Physics and Astronomy, Purdue University
    • Purdue University
    • Birck Nano Technology Center, Purdue University
    • Dept. of Physics, Purdue University
    • Department of Physics and Astronomy and Station Q Purdue, Purdue University
    • Department of Physics and Astronomy, Station Q Purdue, and Birck Nanotechnology Center, Purdue University

  • John Watson

    • Purdue University

  • Michael Manfra

    • Purdue University
    • Microsoft
    • Department of Physics and Astronomy and Station Q Purdue, Purdue University
    • Department of Physics and Astronomy, Purdue University
    • Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907 USA
    • Microsoft Station Q Purdue
    • Physics and Astronomy, Purdue University
    • Department of Physics and Astronomy, School of Materials Engineering and School of Electrical and Computer Engineering, Purdue University
    • Station Q Purdue and Department of Physics and Astronomy, Purdue University
    • Dept. of Physics, Purdue University
    • Department of Physics and Astronomy and Station Q Purdue, Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA
    • Dept. of Physics and Astronomy, Purdue
    • Purdue University, Station Q Purdue
    • Department of Physics and Astronomy, Station Q Purdue, and Birck Nanotechnology Center, Purdue University

  • K. W. Baldwin

    • Electrical Engineering, Princeton University
    • Princeton University

  • Loren Pfeiffer

    • Electrical Engineering, Princeton University
    • Princeton University
    • Princeton Univ
    • Department of Electrical Engineering, Princeton University
    • PRISM, Princeton University
    • Physics, Princeton University
    • Electrical Engineering, Princeton

  • Kenneth West

    • Electrical Engineering, Princeton University
    • Princeton University
    • Princeton Univ
    • Department of Electrical Engineering, Princeton University
    • PRISM, Princeton University
    • Physics, University of Pittsburgh
    • Electrical Engineering, Princeton