Electric Transport Theory of Dirac Fermions in Graphene

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dc.creatorYan, Xin-Zhong
dc.creatorRomiah, Yousef
dc.creatorTing, C. S.
dc.date2007-08-11
dc.date2007-12-19
dc.date.accessioned2026-07-07T09:43:10Z
dc.date.available2026-07-07T09:43:10Z
dc.descriptionUsing the self-consistent Born approximation to the Dirac fermions under finite-range impurity scatterings, we show that the current-current correlation function is determined by four-coupled integral equations. This is very different from the case for impurities with short-range potentials. As a test of the present approach, we calculate the electric conductivity in graphene for charged impurities with screened Coulomb potentials. The obtained conductivity at zero temperature varies linearly with the carrier concentration, and the minimum conductivity at zero doping is larger than the existing theoretical predictions, but still smaller than that of the experimental measurement. The overall behavior of the conductivity obtained by the present calculation at room temperature is similar to that at zero temperature except the minimum conductivity is slightly larger.
dc.description6 pages, 3 figures
dc.identifierhttps://arxiv.org/abs/0708.1569
dc.identifierhttp://arxiv.org/abs/0708.1569
dc.identifierPhys. Rev. B 77, 125409 (2008)
dc.identifierdoi:10.1103/PhysRevB.77.125409
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/162454
dc.subjectStrongly Correlated Electrons
dc.titleElectric Transport Theory of Dirac Fermions in Graphene
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