Excitonic gap, phase transition, and quantum Hall effect in graphene

V. P. Gusynin, V. A. Miransky, S. G. Sharapov, I. A. Shovkovy

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Abstract

We suggest that physics underlying the recently observed removal of sublattice and spin degeneracies in graphene in a strong magnetic field describes a phase transition connected with the generation of an excitonic gap. The experimental form of the Hall conductivity is reproduced and the main characteristics of the dynamics are described. Predictions of the behavior of the gap as a function of temperature and a gate voltage are made.

Original languageEnglish (US)
Article number195429
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume74
Issue number19
DOIs
StatePublished - Nov 29 2006
Externally publishedYes

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ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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