Quantum Hall effect and quantum point contact in bilayer-patched epitaxial graphene.
basic_science · Level V
Where this comes from
- Record sourced from PubMed, PMID 24848806.
- Also identified by DOI 10.1021/nl5008757.
- No licence information is recorded for this record.
- Because redistribution is not established, this page shows the abstract only. Follow the links below for the full text.
Abstract
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.