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Dynamical gap generation in graphene nanoribbons: An effective relativistic field theoretical model. Physical Review. B, Condensed Matter and Materials Physics. v.83, p.153405 - , 2011.

 

 CHAVES, A. J.; LIMA, G. D.; O. Oliveira; CORDEITO, C. E.; DELFINO, A.; T. Frederico.

ABSTRACT

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

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