Tuning electronic structure of graphene via tailoring structure: theoretical study

Details Tuning electronic structure of graphene via tailoring structure: theoretical study Tuning electronic structure of graphene via tailoring structure: theoretical study

2010-06-15

arxiv.org/abs/1006.2886v1

published in J. Appl. Phys. 107, 114322 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 figures, 6 pages

Scientific paper

Electronic structures of graphene sheet with different defective patterns are investigated, based on the first principles calculations. We find that defective patterns can tune the electronic structures of the graphene significantly. Triangle patterns give rise to strongly localized states near the Fermi level, and hexagonal patterns open up band gaps in the systems. In addition, rectangular patterns, which feature networks of graphene nanoribbons with either zigzag or armchair edges, exhibit semiconducting behaviors, where the band gap has an evident dependence on the width of the nanoribbons. For the networks of the graphene nanoribbons, some special channels for electronic transport are predicted.

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