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arXiv · 0803.3387

Electronic structure of negatively curved graphene

D. V. Kolesnikov·V. A. Osipov
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Abstract

We study the electronic structure of graphene in the presence of either sevenfolds or eightfolds by using a gauge field-theory model. The graphene sheet with topological defects is considered as a negative cone surface with infinite Gaussian curvature at the center. The density of electronic states is calculated for a single seven- and eightfold as well as for a pair of sevenfolds with different morphology. The density of states at the Fermi energy is found to be zero in all cases except two sevenfolds with translational factor $M\neq 0$.

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D. V. Kolesnikov, V. A. Osipov. 2008-03-24. Electronic structure of negatively curved graphene. https://doi.org/10.1134/s0021364008080067

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