title: Friedel oscillations, impurity scattering, and temperature dependence of resistivity in graphene.
abstract: We show that Friedel oscillations (FO) in grapehene are strongly affected by the chirality of electrons in this material. In particular, the FO of the charge density around an impurity show a faster (deltarho approximately r;{-3}) decay than in conventional 2D electron systems and do not contribute to a linear temperature-dependent correction to the resistivity. In contrast, the FO of the exchange field which surrounds atomically sharp defects breaking the hexagonal symmetry of the honeycomb lattice lead to a negative linear T dependence of the resistivity.
authors.affiliation: Physics Department, Lancaster University, Lancaster, LA1 4YB, United Kingdom.
authors.forename: Vadim V
authors.initials: VV
authors.lastname: Cheianov
authors.forename: Vladimir I
authors.initials: VI
authors.lastname: Fal'ko