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28 March 2024
 
  » arxiv » cond-mat/0606589

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Quantum transport of massless Dirac fermions in graphene
Kentaro Nomura ; A.H. MacDonald ;
Date 23 Jun 2006
Subject Mesoscopic Systems and Quantum Hall Effect
AbstractMotivated by recent graphene transport experiments, we have undertaken a numerical study of the conductivity of disordered two-dimensional massless Dirac fermions.
We find that in the short-range scattering case the minimum conductivity $sigma_{ m min} approxeq (1/pi) e^2/h$, while in the Coulomb scattering case $sigma_{ m min} approxeq e^2/h$.
We discuss the relationship between this finding and the experimental properties of graphene sheets, commenting on the possible roles of short-range, Coulombic, and topological-defect scatterers.
Source arXiv, cond-mat/0606589
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