Nature Communications (Apr 2017)

Tunable transmission of quantum Hall edge channels with full degeneracy lifting in split-gated graphene devices

  • Katrin Zimmermann,
  • Anna Jordan,
  • Frédéric Gay,
  • Kenji Watanabe,
  • Takashi Taniguchi,
  • Zheng Han,
  • Vincent Bouchiat,
  • Hermann Sellier,
  • Benjamin Sacépé

DOI
https://doi.org/10.1038/ncomms14983
Journal volume & issue
Vol. 8, no. 1
pp. 1 – 7

Abstract

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Quantum point contacts are gate-tunable constrictions allowing for control of charge carrier transmission in 2D electron gases. Here, the authors fabricate a hBN/graphene/hBN van der Waals heterojunction to enable quantum point contact devices in the integer and fractional quantum Hall regimes.