Inhomogeneous optical absorption around the K point in graphite and carbon nanotubes

A. Jorio, A. G.Souza Filho, M. S. Dresselhaus, A. Grüneis, R. Saito, Ge G. Samsonidze, T. Kimura, M. A. Pimenta, M. A. Pimenta, G. Dresselhaus, M. A. Pimenta

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1 Citation (Scopus)

Abstract

The optical absorption spectra of π electrons are calculated for graphite and carbon nanotubes. Particular attention is paid to the processes contributing to the optical absorption as a function of the electron wave vector k and light polarization direction. The optical absorption amplitude around the K point in the Brillouin zone has a node in the two-dimensional Brillouin zone of graphite. The formula for the absorption scattering matrix around the K point is given analytically by expanding the matrix element into a Taylor series. The chirality dependence of the absorption matrix element of a single-wall carbon nanotube is presented.

Original languageEnglish
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume67
Issue number16
DOIs
Publication statusPublished - 2003 Apr 2

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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