Anomalous nematic states in half-filled high Landau levels

ORAL

Abstract

It is well established that the ground states of a two-dimensional electron gas with half-filled high (N ≥ 2) Landau levels are compressible charge-ordered states, known as quantum Hall stripe (QHS) phases. The generic features of QHSs are a maximum (minimum) in a longitudinal resistance Rxx (Ryy) and a non-quantized Hall resistance RH. This talk will report on emergent minima (maxima) in Rxx (Ryy) and plateau-like features in RH in half-filled N ≥ 3 Landau levels. Remarkably, these unexpected features emerge at temperatures considerably lower than the onset temperature of QHSs, suggestive of a new ground state.

*The work at Minnesota (Purdue) was supported by the U.S. Department of Energy, Office of Science, Basic Energy Sciences, under Award \# ER 46640-SC0002567 (DE-SC0020138). L.N.P. and K.W.W. of Princeton University acknowledge the Gordon and Betty Moore Foundation Grant No. GBMF 4420, and the National Science Foundation MRSEC Grant No. 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 Nos. DMR-1157490, DMR-1644779 and the State of Florida.

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Presenters

  • Xiaojun Fu

    • University of Minnesota

Authors

  • Xiaojun Fu

    • University of Minnesota

  • Qianhui Shi

    • Columbia Univ
    • Columbia University
    • University of Minnesota

  • Michael Zudov

    • University of Minnesota

  • Geoff C Gardner

    • Purdue University
    • Birck Nanotechnology Center and Microsoft Quantum Purdue, Purdue University
    • Department of Physics and Astronomy and Station Q Purdue, Purdue University
    • Microsoft Quantum Purdue, Purdue University, West Lafayette, Indiana 47907, USA
    • Microsoft Quantum Purdue
    • Department of Physics and Astronomy, Microsoft Quantum Purdue, Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA
    • Physics, Purdue University

  • John Watson

    • Purdue University

  • Michael Manfra

    • Physics and Astronomy, Purdue Univ
    • Department of Physics and Astronomy and Station Q Purdue, Birck Nanotechnology Center, School of Materials Engineering, School of Electrical and Computer Engineering, Purdue
    • Purdue Univ
    • Purdue University
    • Microsoft Quantum at Station Q Purdue
    • Department of Physics and Astronomy, Birck Nanotechnology Center, Microsoft Quantum Purdue, School og Materials Engineering & School of Electrical and Computer Engineering, P
    • Physics and Astronomy, Purdue University
    • Department of Physics and Astronomy and Station Q Purdue, Purdue University
    • Department of Physics and Astronomy and Microsoft Quantum Purdue, Purdue University, West Lafayette, Indiana 47907 USA
    • Department of Physics and Astronomy, PURDUE UNIVERSITY
    • Department of Physics and Astronomy, Microsoft Quantum Purdue, Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA
    • Physics, Purdue University

  • K. W. Baldwin

    • Princeton University
    • Electrical engineering, Princeton university
    • Electrical Engineering, Princeton University

  • Loren Pfeiffer

    • Princeton University
    • Electrical Engineering, Princeton University
    • Electrical engineering, Princeton university
    • Princeton Univ
    • Department of Electrical Engineering, Princeton University
    • electrical engineering, Princeton
    • Department of Electrical Engineering, Princeton University, Princeton, NJ, 08544, USA

  • Kenneth West

    • Princeton University
    • Electrical Engineering, Princeton University
    • Electrical engineering, Princeton university
    • Princeton Univ
    • Department of Electrical Engineering, Princeton University
    • electrical engineering, Princeton
    • Department of Electrical Engineering, Princeton University, Princeton, NJ, 08544, USA