Excitonic effects on Raman intensity of single wall carbon nanotubes

Kentaro Sato, Ahmad R.T. Nugraha, Riichiro Saito

Research output: Contribution to journalArticle

Abstract

The exciton-photon matrix elements, exciton-phonon matrix elements, and resonance Raman intensity for radial breathing mode are calculated as a function of a dielectric constant κ which represents surrounding materials of single wall carbon nanotubes using the extended tight binding method. Since the exciton wave function in the real space becomes more delocalized with increasing κ, the exciton-photon matrix elements and resonance Raman intensity for radial breathing mode decrease with increasing κ, while the exciton-phonon matrix elements are not so sensitive to the change of the exciton wave function.

Original languageEnglish
Pages (from-to)358-361
Number of pages4
Journale-Journal of Surface Science and Nanotechnology
Volume8
DOIs
Publication statusPublished - 2010 Sep 25

Keywords

  • Carbon nanotube
  • Light scattering
  • Many body and quasi-particle theories

ASJC Scopus subject areas

  • Biotechnology
  • Bioengineering
  • Condensed Matter Physics
  • Mechanics of Materials
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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