At partial filling of a Landau level, strong electron interaction dominates the suppressed kinetic energy thus drives formation of a variety of fractional quantum Hall states and electron solids. Using scanning tunneling microscopy, we show direct imaging of the Wigner crystal, a triangular electron lattice, at small filling fractions in Bernal stacked bilayer graphene and identify its phase space at high magnetic field. We reveal microscopic details of the Wigner crystal and discuss how it is affected by disorder potential. We also explore the phase space of the Wigner crystal at different magnetic fields and temperatures.
*We thank DOE, Moore Foundation, NSF-DMR, NSF-MRSEC, and ONR for funding support.
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Presenters
Minhao He
Princeton University
Authors
Minhao He
Princeton University
Yen-Chen Tsui
Princeton University
Yuwen Hu
Princeton University
Taige Wang
University of California, Berkeley
Ethan A Lake
University of California, Berkeley
Kenji Watanabe
National Institute for Materials Science
NIMS
Research Center for Electronic and Optical Materials, National Institute for Materials Science
Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
National Institute for Material Science
Takashi Taniguchi
Kyoto Univ
National Institute for Materials Science
Research Center for Materials Nanoarchitectonics
Research Center for Materials Nanoarchitectonics, National Institute for Materials Science
National Institute for Materials Sciences
NIMS
International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan
National Institute for Material Science
International Center for Materials Nanoarchitectonics, NIMS, Japan
International Center for Materials Nanoarchitectonics, Tsukuba
National Institue for Materials Science
Kyoto University
National Institute of Materials Science
International Center for Materials Nanoarchitectonics and National Institute for Materials Science
