Theory of transport in graphene with long-range scatterers

Masaki Noro, Mikito Koshino, Tsuneya Ando

Research output: Contribution to journalArticle

26 Citations (Scopus)

Abstract

The density of states and conductivity are calculated for scatterers with nonzero range in monolayer graphene within a self-consistent Born approximation. For scatterers with a Gaussian potential, the minimum conductivity at the Dirac point remains universal in the clean limit, but increases with disorder and becomes nonuniversal for long-range scatterers. For charged impurities, we use the Thomas-Fermi approximation for the screening effect. The conductivity increases in proportion to the electron concentration in agreement with experiments and the minimum conductivity becomes about twice as large as the universal value.

Original languageEnglish
Article number094713
Journaljournal of the physical society of japan
Volume79
Issue number9
DOIs
Publication statusPublished - 2010 Sep 1

Keywords

  • Charged scatterers
  • Dirac point
  • Impurity scattering
  • Level broadening
  • Two-dimensional graphite

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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