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Paper   IPM / Physic / 8745
School of Physics
  Title:   Quasiparticle Properties of Graphene in the Presence of Disorder
1.  A. Qauimzadeh
2.  N. Arabchi
3.  R. Asgari
  Status:   Published
  Journal: Solid State Commun.
  Vol.:  147
  Year:  2008
  Pages:   172-177
  Supported by:  IPM
We calculate the quasiparticle properties of chiral Dirac electrons in graphene within the Landau Fermi Liquid scheme in the based on random phase approximation in the presence of disorder. We take randomly distributed charged impurities at a fixed distance from the graphene sheet and surface fluctuations (ripples) as the main scattering mechanisms. Mode-coupling approach to scattering rate and self-energy in random-phase 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 5−10 percentage at available experimental charge carrier density region.

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