Kekule-distortion-induced exciton instability in graphene

Journal Article · Mon Sep 15 00:00:00 EDT 2008 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.78.115417· OSTI ID:21192438

Dillenschneider, Raoul ^[1]

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1. Department of Physics, University of Augsburg, D-86135 Augsburg (Germany)

Effects of a Kekule distortion on exciton instability in single-layer graphene are discussed. In the framework of quantum electrodynamics the mass of the electron generated dynamically is worked out using a Schwinger-Dyson equation. For homogeneous lattice distortion it is shown that the generated mass is independent of the amplitude of the lattice distortion at the one-loop approximation. Formation of excitons induced by the homogeneous Kekule distortion could appear only through direct dependence of the lattice distortion.

• OSTI ID: 21192438
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 78, Issue 11; Other Information: DOI: 10.1103/PhysRevB.78.115417; (c) 2008 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLITUDES
APPROXIMATIONS
CARBON
CRYSTAL DEFECTS
ELECTRONS
EQUATIONS
EXCITONS
INSTABILITY
LAYERS
MASS
NANOSTRUCTURES
QUANTUM ELECTRODYNAMICS