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The DOI matches its Crossref record; 4 of the 4 references it cites were found in a registry or an index.

Measurement of the Optical Conductivity of Graphene

Open access
Mak, Kin Fai, Sfeir, Matthew Y., Wu, Yang, Lui, Chun Hung, Misewich, James A., Heinz, Tony F.·2008·Physical Review Letters

Abstract

Optical reflectivity and transmission measurements over photon energies between 0.2 and 1.2 eV were performed on single-crystal graphene samples on a SiO2 substrate. For photon energies above 0.5 eV, graphene yielded a spectrally flat optical absorbance of (2.3+/-0.2)%. This result is in agreement with a constant absorbance of pialpha, or a sheet conductivity of pie2/2h, predicted within a model of noninteracting massless Dirac fermions. This simple result breaks down at lower photon energies, where both spectral and sample-to-sample variations were observed. This "nonuniversal" behavior is explained by including the effects of doping and finite temperature, as well as contributions from intraband transitions.

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Metadata

Authors
Mak, K. F., Sfeir, M. Y., Wu, Y., Lui, C. H., Misewich, J. A., & Heinz, T. F.
Venue
Physical Review Letters
Published
2008-11-07
Volume
101
Issue
19
Pages
196405-196405
ISSN
  • 0031-9007 (ISSN-L)
  • 1079-7114
OpenAlex
W2021312954
Cited by
1,722
References
4
FWCI
28.29
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Measurement of the Optical Conductivity of Graphene. https://app.cochat.ai/papers/10.1103/physrevlett.101.196405
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Mak, K. F., Sfeir, M. Y., Wu, Y., Lui, C. H., Misewich, J. A., & Heinz, T. F. (2008). Measurement of the Optical Conductivity of Graphene. Physical Review Letters. https://doi.org/10.1103/physrevlett.101.196405

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