Intervalley scattering by charged impurities in graphene
Intervalley charged-impurity scattering processes are examined. It is found that the scattering probability is enhanced due to the Coulomb interaction with the impurity by the Sommerfeld factor $$F_z \propto \varepsilon ^{2\sqrt {1 - 4g^2 } - 2}$$; where ∈ is the electron energy and g is the dimensionless constant of the Coulomb interaction.