Karl Franzens University Graz

Graz University of Technology 

Scattering mechanisms and charge carrier transport in graphene
M. I. Katsnelson
Raboud University, Nijmegen NL
17:15 - 18:15 Tuesday 11 March 2008 TUG

Ultrarelativistic character of electron energy spectrum in single-layer graphene leads to unusual picture of charge carrier transport in this material. The problem of minimal conductivity and its relations with quantum relativistic phenomena such as Zitterbewegun and Klein tunneling is considered. Quantum Boltzmann equation for charge carriers in
graphene is derived and investigated. It turns out that, except the case of a very low doping, a standard quasiclassical description is applicable. Different scattering mechanisms are considered, such as scattering by charge impurities and by corrugations of graphene sheets. Peculiarities of electron transport in bilayer graphene in comparison with the single-layer graphene and with conventional 2D electron gas is discussed.