Epitaxial Single-Layer Graphene on the SiC Substrate

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Abstract:

The analytical expression for the density-of-states (DOS) of single-layer graphene interacting with the SiC surface (epitaxial graphene) is obtained. The silicon carbide DOS is described within the scope of the Haldane-Anderson model. It is shown that due to the interaction with the substrate the gap of about 0.01-0.06 eV arises in the epitaxial graphene DOS. The estimation indicates that the electron charge of about (−10-3) e/atom transfers from the substrate to graphene.

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Materials Science Forum (Volumes 717-720)

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645-648

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May 2012

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© 2012 Trans Tech Publications Ltd. All Rights Reserved

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