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

Georgi Diankov, Chi-Te Liang (), François Amet, Patrick Gallagher, Menyoung Lee, Andrew J. Bestwick, Kevin Tharratt, William Coniglio, Jan Jaroszynski, Kenji Watanabe, Takashi Taniguchi and David Goldhaber-Gordon ()
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Georgi Diankov: Stanford University
Chi-Te Liang: Stanford University
François Amet: Duke 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

Nature Communications, 2016, vol. 7, issue 1, 1-6

Abstract: 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

Date: 2016
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DOI: 10.1038/ncomms13908

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