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arXiv · 0806.3349

Kekule-distortion-induced Exciton instability in graphene

Raoul Dillenschneider
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Abstract

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.

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Raoul Dillenschneider. 2008-09-22. Kekule-distortion-induced Exciton instability in graphene. https://doi.org/10.1103/physrevb.78.115417

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