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Universal Optical Conductance of Graphite

Contributors

Kuzmenko, Alexey; Van Heumen, Erik; Carbone, Fabrizio; Van Der Marel, Dirk

Published in

Physical review letters, vol. 100, no. 11, 117401

Publication date

2008

Abstract

We find experimentally that the optical sheet conductance of graphite per graphene layer is very close to (π/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.

UNIGE affiliation entities

UNIGE research groups

Funding

  • Swiss National Science Foundation - NCCR MaNEP

Citation (ISO format)

KUZMENKO, Alexey et al. Universal Optical Conductance of Graphite. In: Physical review letters, 2008, vol. 100, n° 11, p. 117401. doi: 10.1103/PhysRevLett.100.117401

Main files (1)

Article (Published version)

Identifiers

Journal ISSN

0031-9007
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Technical informations

Creation

17/11/2012 22:10:00

First validation

17/11/2012 22:10:00

Update

14/03/2023 17:46:24

Status update

14/03/2023 17:46:24

Last indexation

30/10/2024 07:59:49
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