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Cited by 264

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On the universal ac optical background in graphene

Open access
Gusynin, V P, Sharapov, S G, Carbotte, J P·2009·New Journal of Physics

Abstract

Latest experiments have confirmed the theoretically expected universal value π e 2 /2 h of the ac conductivity of graphene and have revealed departures of the quasi-particle dynamics from predictions for the Dirac fermions in idealized graphene. We present analytical expressions for the ac conductivity in graphene that allow one to study how it is affected by interactions, temperature, external magnetic field and the opening of a gap in the quasi-particle spectrum. We show that the ac conductivity of graphene does not necessarily give a metrologically accurate value of the von Klitzing constant h / e 2 , because it is depleted by the electron–phonon interaction. In a weak magnetic field, the ac conductivity oscillates around the universal value and the Drude peak evolves into a peak at the cyclotron frequency.

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Crossref · 10.1088/1367-2630/11/9/095013

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Metadata

Authors
Gusynin, V. P., Sharapov, S. G., & Carbotte, J. P.
Venue
New Journal of Physics
Published
2009-09-30
Volume
11
Issue
9
Pages
095013
ISSN
1367-2630 (ISSN-L)
OpenAlex
W2095907979
Cited by
264
References
6
FWCI
9.41
Type
journal article
Language
en
Open access
gold

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CoChat. (2026). Citation check: On the universal ac optical background in graphene. https://app.cochat.ai/papers/10.1088/1367-2630/11/9/095013
The paper
Gusynin, V. P., Sharapov, S. G., & Carbotte, J. P. (2009). On the universal ac optical background in graphene. New Journal of Physics. https://doi.org/10.1088/1367-2630/11/9/095013

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.