Universal optical conductance of graphite.

By A. Kuzmenko, E. Heumen, F. Carbone, D. van der Marel. Physical Review Letters, 2007

805 citations recorded by the source corpus.

We find experimentally that the optical sheet conductance of graphite per graphene layer is very close to (pi/2)e2/h, which is the theoretically expected value of dynamical conductance of isolated monolayer graphene. Our calculations within the Slonczewski-Weiss-McClure model explain well why the interplane hopping leaves the conductance of graphene sheets in graphite almost unchanged for photon energies between 0.1 and 0.6 eV, even though it significantly affects the band structure on the same energy scale. The f-sum rule analysis shows that the large increase of the Drude spectral weight as a function of temperature is at the expense of the removed low-energy optical spectral weight of transitions between hole and electron bands.

Subfields: Atomic and Molecular Physics, and Optics, Electrical and Electronic Engineering, Materials Chemistry

View Paper: https://www.semanticscholar.org/paper/e321cee55d2721256307a3593ac1fc4d63028ec4

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In Atomic and Molecular Physics, and Optics

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Citations in the corpus

Electronic transport in two-dimensional graphene (2010, background): “This has attracted considerable theoretical interest (Gusynin and Sharapov, 2006; Herbut et al., 2008; Katsnelson, 2008; 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…”
Graphene-based integrated photonics for next-generation datacom and telecom (2018, background): “Here, σ0 = e 2 /4ħ is the SLG universal conductivity[81,82] and kBT is the thermal energy.”