Temperature dependence of the diffusive conductivity of bilayer graphene

Details Temperature dependence of the diffusive conductivity of bilayer graphene Temperature dependence of the diffusive conductivity of bilayer graphene

2009-12-09

arxiv.org/abs/0912.1606v2

Phys. Rev. B 82, 075423 (2010)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Published version; 6 pages, 5 figures; includes results for the hyperbolic dispersion

Scientific paper

10.1103/PhysRevB.82.075423

Assuming diffusive carrier transport and employing an effective medium theory, we calculate the temperature dependence of bilayer graphene conductivity due to Fermi-surface broadening as a function of carrier density. We find that the temperature dependence of the conductivity depends strongly on the amount of disorder. In the regime relevant to most experiments, the conductivity is a function of T/T*, where T* is the characteristic temperature set by disorder. We demonstrate that experimental data taken from various groups collapse onto a theoretically predicted scaling function.

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