Abstract
Angle-resolved photoemission and x-ray diffraction experiments show that multilayer epitaxial graphene grown on the surface is a new form of carbon that is composed of effectively isolated graphene sheets. The unique rotational stacking of these films causes adjacent graphene layers to electronically decouple leading to a set of nearly independent linearly dispersing bands (Dirac cones) at the graphene point. Each cone corresponds to an individual macroscale graphene sheet in a multilayer stack where -stacked sheets can be considered as low density faults.
- Received 29 July 2009
DOI:https://doi.org/10.1103/PhysRevLett.103.226803
©2009 American Physical Society