On the Screening Effects and Plasmon Spectrum in Graphene

Authors

  • E. A. Pashitskii Institute of Physics of the National Academy of Sciences of Ukraine
  • A. A. Gurin Institute of Physics of the National Academy of Sciences of Ukraine

Abstract

Basing on the method of Green functions for longitudinal (Coulomb) field in three-layer system of media with spatial and frequency dispersion, the screening effects and spectrum of plasma oscillations in graphene are considered. In graphene monolayer the screening of charges comes to their renormalization, so that asymptotic of the screening potential is R-1 whereas the screening in graphene bilayers is characterized by R-3 power asymptotics. The plasma spectrum in graphene mono- and bilayer has a symmetric mode with acoustic dispersion law and an antisymmetric one with root dispersion law.

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(1)
Pashitskii, E. A.; Gurin, A. A. On the Screening Effects and Plasmon Spectrum in Graphene. Him. Fiz. Tehnol. Poverhni 2011, 2, 3-10.

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Vol. 2 No. 1 (2011): Chemistry, Physics and Technology of Surface / Himia, Fizika ta Tehnologia Poverhni

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