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Quasiparticle properties of graphene in the presence of disorder

Authors
Journal
Solid State Communications
0038-1098
Publisher
Elsevier
Publication Date
Volume
147
Identifiers
DOI: 10.1016/j.ssc.2008.05.036
Keywords
  • A. Graphene
  • C. Chirality
  • C. Impurity Effects
  • D. Electron–Electron Interactions

Abstract

Abstract We calculate the quasiparticle properties of chiral two-dimensional Dirac electrons in graphene within the Landau Fermi Liquid scheme based on G W approximation in the presence of disorder. Disorder effects due to charged impurity scattering play a crucial role in density dependence of quasiparticle quantities. Mode-coupling approach to scattering rate and self-energy in G W 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% at available experimental charge carrier density region.

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