Quasiparticle properties of graphene in the presence of disorder

Details Quasiparticle properties of graphene in the presence of disorder Quasiparticle properties of graphene in the presence of disorder

2008-05-26

arxiv.org/abs/0805.3890v1

Solid State Communications 147, 172 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

15 pages, 4 figures. To appear in Solid State Communications

Scientific paper

10.1016/j.ssc.2008.05.036

We calculate the quasiparticle properties of chiral two-dimensional Dirac electrons in graphene within the Landau Fermi Liquid scheme based on $GW$ approximation in the presence of disorder. Disorder effects due to charged impurity scattering plays a crucial role in density dependence of quasiparticle quantities. Mode-coupling approach to scattering rate and self-energy in $GW$ approximation for quasiparticle renormalized Fermi velocity and spin-antisymmetric Landau Fermi parameter incorporating the many-body interactions and the disorder effects show reduction of these quantities by 5-15 percent at available experimental charge carrier density region.

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