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Dynamical Gap Generation for Graphene Nanoribbons

Authors: A. J. Chaves, G. D. Lima, W. de Paula, C. E. Cordeiro, A. Delfino, T. Frederico, O. Oliveira

Ref.: Phys. Rev. B 83, 153405 (2011)

Abstract: We show that the assumption of a nontrivial zero bandgap for a graphene sheet within an efective relativistic field theoretical model description of interacting Dirac electrons on the surface of graphene, describes the experimental bandgap of graphene nanoribbons for a wide range of widths. The graphene bandgap is dynamically generated, corresponding to a nontrivial gapless solution, found in the limit of an infinite wide graphene ribbon. The nanoribbon band gap is determined by the experimental graphene work function.

DOI: 10.1103/PhysRevB.83.153405

URL: arxiv.org