Universal dynamical conductance in graphite

Abstract

We find experimentally that the optical sheet conductance of graphite per graphene layer is very close to $(\pi /2)e^2/h$, which is the theoretically expected value of dynamical conductance of isolated monolayer graphene. Our calculations within the Slonczewski-McClure-Weiss 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.

4 pages, 4 figures

References in corpus (4)

• Electric Field Effect in Atomically Thin Carbon Films
• Infrared spectroscopy of Landau levels in graphene
• Optical and magneto-optical far-infrared properties of bilayer graphene
• Phase analysis of quantum oscillations in graphite

Cited by in corpus (18)

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• Measurement of the Optical Conductivity of Graphene
• Graphene-Based Liquid Crystal Device
• The optical conductivity of graphene in the visible region of the spectrum
• Nonlinear electromagnetic response of graphene: Frequency multiplication and the self-consistent-field effects
• Electronic properties of bilayer and multilayer graphene
• On the universal AC optical background in graphene
• Infrared spectroscopy of electronic bands in bilayer graphene
• Optical conductivity of bilayer graphene with and without an asymmetry gap
• Conductivity of suspended and non-suspended graphene at finite gate voltage
• Linear response of doped graphene sheets to vector potentials
• Graphite from the viewpoint of Landau level spectroscopy: An effective graphene bilayer and monolayer
• Origin of Universal Optical Conductivity and Optical Stacking Sequence Identification in Multilayer Graphene
• Orientation dependence of the optical spectra in graphene at high frequencies
• Optical properties of graphene: the Fermi liquid approach
• Dirac electrons in graphene-based quantum wires and quantum dots
• Spectroscopic Signatures of Massless Gap Opening in Graphene
• Magneto-transmission as a probe of Dirac fermions in bulk graphite