Graphene Nanoribbon and Graphene Nanodisk

Details Graphene Nanoribbon and Graphene Nanodisk Graphene Nanoribbon and Graphene Nanodisk

2007-09-13

arxiv.org/abs/0709.2066v1

Physica E 40, 1421 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

7 pages, 5 figures, to be published in Physica E (EP2DS-17, Genova)

Scientific paper

10.1016/j.physe.2007.09.031

We study electronic properties of graphene derivatives which have closed edges. They are finite-length graphene nanoribbons and graphene nanodisks. No metallic states are found in finite-length zigzag nanoribbons though all infinite-length zigzag nanoribbons are metallic. We also study hexagonal, parallelogrammic and trigonal nanodisks with zigzag or armchair edges. No metallic states are found in these nanodisks either except trigonal zigzag nanodisks. It is interesting that we can design the degeneracy of the metallic states arbitrarily in trigonal zigzag nanodisks by changing the size.

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