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

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

Research output: Contribution to journalArticlepeer-review

173 Citations (Scopus)


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
Article number165402
Pages (from-to)1654021-1654027
Number of pages7
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number16
Publication statusPublished - 2003 Apr 1

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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