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Dirac charge dynamics in graphene by infrared spectroscopy
Open accessAbstract
A remarkable manifestation of the quantum character of electrons in matter is offered by graphene, a single atomic layer of graphite. Unlike conventional solids where electrons are described with the Schrodinger equation, electronic excitations in graphene are governed by the Dirac hamiltonian. Some of the intriguing electronic properties of graphene, such as massless Dirac quasiparticles with linear energy-momentum dispersion, have been confirmed by recent observations. Here, we report an infrared spectromicroscopy study of charge dynamics in graphene integrated in gated devices. Our measurements verify the expected characteristics of graphene and, owing to the previously unattainable accuracy of infrared experiments, also uncover significant departures of the quasiparticle dynamics from predictions made for Dirac fermions in idealized, free-standing graphene. Several observations reported here indicate the relevance of many-body interactions to the electromagnetic response of graphene.
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Cites
The electronic properties of graphene
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Two-dimensional gas of massless Dirac fermions in graphene
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Experimental observation of the quantum Hall effect and Berry's phase in graphene
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Self-citationFine Structure Constant Defines Visual Transparency of Graphene
Nair, R. R., Blake, P., Grigorenko, A. N., Novoselov, K. S., Booth, T. J., Stauber, T., Peres, N. M. R., & Geim, A. K. (2008) · Science · doi:10.1126/science.1156965 · Cited by 9,084
Electronic properties of disordered two-dimensional carbon
Peres, N. M. R., Guinea, F., & Castro Neto, A. H. (2006) · Physical Review B · doi:10.1103/physrevb.73.125411 · Cited by 1,445
Cited by
Photodetectors based on graphene, other two-dimensional materials and hybrid systems
Koppens, F. H. L., Mueller, T., Avouris, P., Ferrari, A. C., Vitiello, M. S., & Polini, M. (2014) · Nature Nanotechnology · doi:10.1038/nnano.2014.215 · Cited by 3,828
A graphene-based broadband optical modulator
Liu, M., Yin, X., Ulin-Avila, E., Geng, B., Zentgraf, T., Ju, L., Wang, F., & Zhang, X. (2011) · Nature · doi:10.1038/nature10067 · Cited by 3,395
Graphene photodetectors for high-speed optical communications
Mueller, T., Xia, F., & Avouris, P. (2010) · Nature Photonics · doi:10.1038/nphoton.2010.40 · Cited by 2,474
Searching for better plasmonic materials
West, P. R., Ishii, S., Naik, G. V., Emani, N. K., Shalaev, V. M., & Boltasseva, A. (2010) · Laser & Photonics Reviews · doi:10.1002/lpor.200900055 · Cited by 2,116
Graphene Plasmonics: Challenges and Opportunities
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Metadata
- Authors
- Li, Z. Q., Henriksen, E. A., Jiang, Z., Hao, Z., Martin, M. C., Kim, P., Stormer, H. L., & Basov, D. N.
- Venue
- Nature Physics
- Published
- 2008-06-08
- Volume
- 4
- Issue
- 7
- Pages
- 532-535
- ISSN
- 1745-2473 (ISSN-L)
- 1745-2481
- OpenAlex
- W2150559554
- Cited by
- 1,277
- References
- 5
- FWCI
- 27.28
- Type
- journal article
- Language
- en
- Open access
- bronze
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- Li, Z. Q., Henriksen, E. A., Jiang, Z., Hao, Z., Martin, M. C., Kim, P., Stormer, H. L., & Basov, D. N. (2008). Dirac charge dynamics in graphene by infrared spectroscopy. Nature Physics. https://doi.org/10.1038/nphys989
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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