Home > Research > Publications & Outputs > Quantum Hall Effect and Quantum Point Contact i...


Text available via DOI:

View graph of relations

Quantum Hall Effect and Quantum Point Contact in Bilayer-Patched Epitaxial Graphene

Research output: Contribution to Journal/MagazineJournal articlepeer-review

  • Cassandra Chua
  • Malcolm Connolly
  • Arseniy Lartsev
  • Tom Yager
  • Samuel Lara-Avila
  • Sergey Kubatkin
  • Sergey Kopylov
  • Vladimir Falko
  • Rositza Yakimova
  • Ruth Pearce
  • T. J. B. M. Janssen
  • Alexander Tzaenchuk
  • Charles G. Smith
<mark>Journal publication date</mark>06/2014
<mark>Journal</mark>Nano Letters
Issue number6
Number of pages5
Pages (from-to)3369-3373
Publication StatusPublished
Early online date21/05/14
<mark>Original language</mark>English


We study an epitaxial graphene monolayer with bilayer inclusions via magnetotransport measurements and scanning gate microscopy at low temperatures. We find that bilayer inclusions can be metallic or insulating depending on the initial and gated carrier density. The metallic bilayers act as equipotential shorts for edge currents, while closely spaced insulating bilayers guide the flow of electrons in the monolayer constriction, which was locally gated using a scanning gate probe.