Stability of Multielectron Bubble Phases in High Landau Levels

ORAL

Abstract

Reentrance to integer quantum Hall effects in two-dimensional electron gases is attributed to the formation of electronic bubbles, intriguing solid phases of electrons predicted by Hartree-Fock theories. Although most properties of the reentrant insulators are consistent with predictions for the bubble phases, none of the efforts could find the proliferation of bubble phases in high Landau levels, a missing puzzle of bubble interpretation. The recent observations of two different types of reentrance in the N=3 Landau level changed this and confirmed the possibility of such proliferation. Here, we investigate temperature evolution of magnetotransport of the reentrant states in the N=3 Landau level and discuss the stability of multielectron bubble phases in the N=2 and N=3 Landau levels. Our results considerably enhance the validity of bubble interpretation on reentrant integer quantum Hall states and enlighten the energetics of multielectron bubbles offering further understanding on the role of electron-electron interactions in bubble formation.

**This work was funded by NSF grant DMR 1904497. Sample growth of K.W.W. and L.N.P. was supported by Gordon and Betty Moore Foundation Grant GBMF 4420 and NSF MRSEC Grant DMR-1420541, while that of M.J.M. by DOE contract no. DE-SC0006671.

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Presenters

  • Dohyung Ro

    • Purdue University

Authors

  • Dohyung Ro

    • Purdue University

  • Sean Myers

    • Purdue University

  • Nianpei Deng

    • Purdue University

  • John Watson

    • Purdue University

  • Michael Manfra

    • Purdue University
    • Purdue Univ
    • Department of Physics and Astronomy and Microsoft Quantum Purdue, Purdue University, West Lafayette, Indiana 47907 USA
    • Department of Physics and Astronomy and Station Q Purdue, Purdue University
    • Niels Bohr Institute, Microsoft Station Q, University of Copenhagen, Universitetsparken 5, 2100 Copenhagen, Denmark
    • Department of Physics and Astronomy, Purdue University
    • Birck Nanotechnology Center and Microsoft Quantum Purdue, Purdue University

  • Loren Pfeiffer

    • Princeton University
    • Princeton Institute for the Science and Technology of Materials (PRISM), Princeton University
    • Department of Electrical Engineering, Princeton University
    • Electrical Engineering, Princeton
    • Electrical Engineering, Princeton University
    • Princeton

  • Ken W. West

    • Princeton University
    • Princeton Institute for the Science and Technology of Materials (PRISM), Princeton University
    • Department of Electrical Engineering, Princeton University
    • Electrical Engineering, Princeton
    • Electrical Engineering, Princeton University
    • Princeton

  • Gabor Attila Csathy

    • Purdue University
    • Purdue Univ