Charged impurity scattering in graphenes: Effects of environmental screening, band gap, and AA stacking

Abstract

The conductivity is calculated for dominant charged-impurity scattering in graphenes within a self-consistent Born approximation. In monolayer graphene, environmental dielectric screening is shown to change their effective potential from short to long range. In bilayer graphene, effects of band-gap opening due to asymmetry between two layers caused by perpendicular electric field and effects of AA stacking are considered.