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First direct observation of a nearly ideal graphene band structure

Journal Article · · Phys. Rev. Lett.

Angle-resolved photoemission and x-ray diffraction experiments show that multilayer epitaxial graphene grown on the SiC(000{bar 1}) 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 K point. Each cone corresponds to an individual macroscale graphene sheet in a multilayer stack where AB-stacked sheets can be considered as low density faults.

Research Organization:
Argonne National Laboratory (ANL)
Sponsoring Organization:
USDOE
OSTI ID:
1005997
Journal Information:
Phys. Rev. Lett., Journal Name: Phys. Rev. Lett. Journal Issue: (22) ; 11, 2009 Vol. 103; ISSN 0031-9007; ISSN PRLTAO
Country of Publication:
United States
Language:
ENGLISH

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