Optical conductivity of graphene in the visible region of the spectrum

By T. Stauber, N. M. R. Peres, A.K. Geim. 2008

712 citations recorded by the source corpus.

We compute the optical conductivity of graphene beyond the usual Dirac-cone approximation, giving results that are valid in the visible region of the conductivity spectrum. The effect of next-nearest-neighbor hopping is also discussed. Using the full expression for the optical conductivity, the transmission and reflection coefficients are given. We find that even in the optical regime the corrections to the Dirac-cone approximation are surprisingly small a few percent. Our results help in the interpretation of the experimental results reported by Nair et al. Science 320, 1308 2008.

Subfields: Atomic and Molecular Physics, and Optics, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/cf9aef0221ee505f2a71e1675eb3b370fd558af9

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In Atomic and Molecular Physics, and Optics

1. K. Novoselov
2. N. M. R. Peres
3. A.K. Geim
4. E. Rossi
5. E. Hwang
6. S. Adam
7. Feng Wang
8. Yuanbo Zhang

In Materials Chemistry

1. N. M. R. Peres
2. K. Novoselov
3. A.K. Geim
4. E. Hwang
5. S. Adam
6. E. Rossi
7. Hui‐Ming Cheng
8. Feng Wang

Citations in the corpus

• Graphene–silicon phase modulators with gigahertz bandwidth (2017, background): “Due to its unique opto-electronic properties, optical losses in single layer graphene (SLG) can be electrically suppressed due to Pauli blocking[27–29].”
• Colloquium: The transport properties of graphene: An introduction (2010, methodology): “In fact, it is proven in general (Stauber et al., 2008b) that the contribution of the nextnearest neighbor hopping only enters in the final result as a renormalization of the energy spectrum.”
• Fluorographene: a two-dimensional counterpart of Teflon. (2010, background): “versality take place in blue, and graphene’s opacity triples in peak at 4.6 eV. This is due to the fact that graphene’s spectrum is no longer linear at energies close to the hopping energy of ≈2.5 eV [31,33] and exhibits a pronounced van Hove singularity [2]. Note that the peak is clearly asymmetric”
• Graphene-based Plasmonic Nano-Antenna for Terahertz Band Communication in Nanonetworks (2013, positive): “Following the procedure described in [15], [29], and contrary to many existing conductivity analysis which are only valid for infinitely large graphene sheets [8], [9], [11], [12], [28], [35], we do not make any simplifying assumption on the energy band structure of AGNRs, temperature or chemical po”
• Colloquium: Graphene spectroscopy (2014, background): “…et al. (1994) for Dirac fermions in general and Ando et al. (2002); Falkovsky and Varlamov (2007); Gusynin and Sharapov (2006); Peres et al. (2006); Stauber et al. (2008b); and Ziegler (2007) for SLG. 10See Abergel et al. (2007); Blake et al. (2007); Ni et al. (2007); and Roddaro et al. (2007).”
• Optical absorption in graphene integrated on silicon waveguides (2012, methodology): “ep, the transmission spectra of all 40 MZI devices were measured to determine the ER value. Fig. 4a shows representative measured transmission spectra with varying 'l . As expected from equation (4), the extinction ratio in the interference fringes gradually decreases with the increasing . The ”
• Electronic transport in two-dimensional graphene (2010, background): “…Kuzmenko et al., 2008; Min and MacDonald, 2009; Mishchenko, 2007, 2009; Peres and Stauber, 2008; Peres et al., 2008; Sheehy and Schmalian, 2009; Stauber et al., 2008a), where it has been argued that it is a fortuitous cancellation of higher order terms 12 that explains the insensitivity of…”