Dynamical gap generation in graphene nanoribbons: An effective relativistic field theoretical model

Journal Article · Fri Apr 15 00:00:00 EDT 2011 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.83.153405· OSTI ID:21538282

Chaves, A J; Paula, W de; Frederico, T ^[1]; Lima, G D ^[2]; Cordeiro, C E; Delfino, A ^[3]; Oliveira, O ^[1]

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1. Departamento de Fisica, Instituto Tecnologico de Aeronautica, 12228-900 Sao Jose dos Campos (Brazil)
2. Departamento de Fisica, Universidade Federal do Piaui, 64049-550 Teresina, Piaui (Brazil)
3. Instituto de Fisica, Universidade Federal Fluminense, Avenida Litoranea s/n, 24210-340 Niteroi, Rio de Janeiro (Brazil)

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.

• OSTI ID: 21538282
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 83, Issue 15; Other Information: DOI: 10.1103/PhysRevB.83.153405; (c) 2011 American Institute of Physics; ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CARBON
ELECTRONS
HONEYCOMB STRUCTURES
LAYERS
NANOSTRUCTURES
RELATIVISTIC RANGE
SURFACES
WORK FUNCTIONS
ELEMENTARY PARTICLES
ELEMENTS
ENERGY RANGE
FERMIONS
FUNCTIONS
LEPTONS
MECHANICAL STRUCTURES
NONMETALS