Universal optical conductance of graphite.

@article{Kuzmenko2008UniversalOC,
  title={Universal optical conductance of graphite.},
  author={Alexey B Kuzmenko and Erik van Heumen and Fabrizio Carbone and Dirk van der Marel},
  journal={Physical review letters},
  year={2008},
  volume={100 11},
  pages={
          117401
        }
}
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… 

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References

SHOWING 1-10 OF 43 REFERENCES

Nature

  • R. Rosenfeld
  • Medicine
    Otolaryngology--head and neck surgery : official journal of American Academy of Otolaryngology-Head and Neck Surgery
  • 2009

Phys

  • Rev. 108, 612 (1957); J. C. Slonzcewski and P. R. Weiss, Phys. Rev. 109, 272
  • 1958

Phys. Rev. Lett

  • Phys. Rev. Lett
  • 1980

Rev. Sci. Instrum

  • Rev. Sci. Instrum
  • 2005

Phys

  • Rev. B 34, 4920
  • 1986

Phys

  • Rev. 138, A197
  • 1965

Phys. Rev. Lett

  • Phys. Rev. Lett
  • 2006

Phys. Rev. B

  • Phys. Rev. B
  • 1981

Phys. Rev. Lett

  • Phys. Rev. Lett
  • 2006

The curves of 1 ! shown in Fig. 1 of this reference were derived incorrectly from the reflectivity spectra as will be detailed in the forthcoming publication

  • Phys. Rev. B
  • 2006