Structurally driven one-dimensional electron confinement in sub-5-nm graphene nanowrinkles.

ABSTRACT: Graphene-based carbon materials such as fullerenes, carbon nanotubes, and graphenes have distinct and unique electronic properties that depend on their dimensionality and geometric structures. Graphene wrinkles with pseudo one-dimensional structures have been observed in a graphene sheet. However, their one-dimensional electronic properties have never been observed because of their large widths. Here we report the unique electronic structure of graphene nanowrinkles in a graphene sheet grown on Ni(111), the width of which was small enough to cause one-dimensional electron confinement. Use of spatially resolved, scanning tunnelling spectroscopy revealed bandgap opening and a one-dimensional van Hove singularity in the graphene nanowrinkles, as well as the chemical potential distribution acr

SUBMITTER: Lim H 

PROVIDER: S-EPMC4639805 | biostudies-literature | 2015 Oct

REPOSITORIES: biostudies-literature