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Anomalous nematic state to stripe phase transition driven by in-plane magnetic fields

X. Fu1, Q. Shi1,*, M. A. Zudov1,†, G. C. Gardner2,3, J. D. Watson3,4,‡, M. J. Manfra2,3,4,5, K. W. Baldwin6, L. N. Pfeiffer6, and K. W. West6

  • 1School of Physics and Astronomy, University of Minnesota, Minneapolis, Minnesota 55455, USA
  • 2Microsoft Quantum Laboratory Purdue, Purdue University, West Lafayette, Indiana 47907, USA
  • 3Birck Nanotechnology Center, Purdue University, West Lafayette, Indiana 47907, USA
  • 4Department of Physics and Astronomy, Purdue University, West Lafayette, Indiana 47907, USA
  • 5School of Electrical and Computer Engineering and School of Materials Engineering, Purdue University, West Lafayette, Indiana 47907, USA
  • 6Department of Electrical Engineering, Princeton University, Princeton, New Jersey 08544, USA

  • *Present address: Department of Physics, Columbia University, New York, NY, USA.
  • †Corresponding author: zudov001@umn.edu
  • ‡Present address: Microsoft Station-Q at Delft University of Technology, 2600 GA Delft, The Netherlands.
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Phys. Rev. B 104, L081301 – Published 2 August, 2021

DOI: https://doi.org/10.1103/PhysRevB.104.L081301

Abstract

Anomalous nematic states, recently discovered in ultraclean two-dimensional electron gas, emerge from quantum Hall stripe phases upon further cooling. These states are hallmarked by a local minimum (maximum) in the hard (easy) longitudinal resistance and by an incipient plateau in the Hall resistance in nearly half-filled Landau levels. Here, we demonstrate that a modest in-plane magnetic field, applied either along 〈110〉 or 〈11¯0〉 crystal axis of GaAs, destroys anomalous nematic states and restores quantum Hall stripe phases aligned along their native 〈110〉 direction. These findings confirm that anomalous nematic states are distinct from other ground states and will assist future theories to identify their origin.

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Phys. Rev. B 104, L081301– Published 2 August, 2021
  • Received 26 March 2021
  • Accepted 12 July 2021
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