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Title: Dynamic polarization of carbon nano-structures by charged particles

A brief review is presented of several models used to describe dynamic polarization of carbon nanostructures by charged particles moving in a broad range of incident velocities. For low-energy excitations of graphene we use the polarization function for its π electron bands in the Dirac cone approximations within a dielectric response approach that includes the transverse optical phonons in a polar substrate. For high-energy excitations by fast electrons we use a two-dimensional hydrodynamic model for the π and σ electron systems in the sp{sup 2} bonded carbon with various geometrical shapes. In particular, we use second quantization of the hydrodynamic model to show that large numbers of plasmons may be excited by moderately fast electrons in a C{sub 60} molecule. Results of the theoretical modeling are compared with several experiments.
Authors:
 [1]
  1. Department of Applied Mathematics and Waterloo Institute for Nanotechnology, University of Waterloo, Waterloo, Ontario N2L 3G1 (Canada)
Publication Date:
OSTI Identifier:
22265923
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1590; Journal Issue: 1; Conference: International conference on electronic, photonic, plasmonic and magnetic properties of nanomaterials, London (Canada), 12-16 Aug 2013; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; 77 NANOSCIENCE AND NANOTECHNOLOGY; APPROXIMATIONS; CHARGED PARTICLES; COMPARATIVE EVALUATIONS; DIELECTRIC MATERIALS; ELECTRONS; EXCITATION; FULLERENES; GRAPHENE; HYDRODYNAMIC MODEL; NANOSTRUCTURES; PHONONS; PLASMONS; POLARIZATION; SECOND QUANTIZATION