First direct observation of a nearly ideal graphene band structure

Details First direct observation of a nearly ideal graphene band structure First direct observation of a nearly ideal graphene band structure

2009-07-30

arxiv.org/abs/0907.5222v1

Physics

Condensed Matter

Materials Science

5 pages, 4 figures

Scientific paper

Angle-resolved photoemission and X-ray diffraction experiments show that multilayer epitaxial graphene grown on the SiC(000-1) surface is a new form of carbon that is composed of effectively isolated graphene sheets. The unique rotational stacking of these films cause adjacent graphene layers to electronically decouple leading to a set of nearly independent linearly dispersing bands (Dirac cones) at the graphene K-point. Each cone corresponds to an individual macro-scale graphene sheet in a multilayer stack where AB-stacked sheets can be considered as low density faults.

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