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Robust fractional quantum Hall effect in the N=2 Landau level in bilayer graphene

Author

Listed:
  • Georgi Diankov

    (Stanford University)

  • Chi-Te Liang

    (Stanford University
    National Taiwan University)

  • François Amet

    (Duke University
    Appalachian State University)

  • Patrick Gallagher

    (Stanford University)

  • Menyoung Lee

    (Stanford University)

  • Andrew J. Bestwick

    (Stanford University)

  • Kevin Tharratt

    (Stanford University)

  • William Coniglio

    (National High Magnetic Field Laboratory)

  • Jan Jaroszynski

    (National High Magnetic Field Laboratory)

  • Kenji Watanabe

    (Advanced Materials Laboratory, National Institute for Materials Science)

  • Takashi Taniguchi

    (Advanced Materials Laboratory, National Institute for Materials Science)

  • David Goldhaber-Gordon

    (Stanford University)

Abstract

The fractional quantum Hall effect is a canonical example of electron–electron interactions producing new ground states in many-body systems. Most fractional quantum Hall studies have focussed on the lowest Landau level, whose fractional states are successfully explained by the composite fermion model. In the widely studied GaAs-based system, the composite fermion picture is thought to become unstable for the N≥2 Landau level, where competing many-body phases have been observed. Here we report magneto-resistance measurements of fractional quantum Hall states in the N=2 Landau level (filling factors 4

Suggested Citation

  • Georgi Diankov & Chi-Te Liang & François Amet & Patrick Gallagher & Menyoung Lee & Andrew J. Bestwick & Kevin Tharratt & William Coniglio & Jan Jaroszynski & Kenji Watanabe & Takashi Taniguchi & David, 2016. "Robust fractional quantum Hall effect in the N=2 Landau level in bilayer graphene," Nature Communications, Nature, vol. 7(1), pages 1-6, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13908
    DOI: 10.1038/ncomms13908
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