Journal
SOLID STATE COMMUNICATIONS
Volume 147, Issue 5-6, Pages 172-177Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.ssc.2008.05.036
Keywords
graphene; chirality; impurity effects; electron-electron interactions
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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 play 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% at available experimental charge carrier density region. (c) 2008 Elsevier Ltd. All rights reserved.
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