TITLE

Electronic structure of epitaxial graphene nanoribbons on SiC(0001)

AUTHOR(S)
Deretzis, I.; La Magna, A.
PUB. DATE
August 2009
SOURCE
Applied Physics Letters;8/10/2009, Vol. 95 Issue 6, p063111
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We present electronic structure calculations of few-layer epitaxial graphene nanoribbons on SiC(0001). Trough an atomistic description of the graphene layers and the substrate within the extended Hückel theory and real/momentum space projections we argue that the role of the heterostructure’s interface becomes crucial for the conducting capacity of the studied systems. The key issue arising from this interaction is a Fermi level pinning effect introduced by dangling interface bonds. Such phenomenon is independent from the width of the considered nanostructures, compromising the importance of confinement in these systems.
ACCESSION #
43720394

 

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