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

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

doi:10.1103/PhysRevB.74.195429

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

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

Research output: Contribution to journal › Article › peer-review

177 Scopus citations

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 language	English (US)
Article number	195429
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	74
Issue number	19
DOIs	https://doi.org/10.1103/PhysRevB.74.195429
State	Published - 2006
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1103/PhysRevB.74.195429

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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.",

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AB - 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.

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

Abstract

ASJC Scopus subject areas

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