Quantum interferences in the Raman cross section for the radial breathing mode in metallic carbon nanotubes

G. Bussi, Jose Menendez, J. Ren, M. Canonico, E. Molinari

Research output: Contribution to journalArticlepeer-review

20 Scopus citations

Abstract

The line shapes of the Raman excitation profiles for radial breathing modes in carbon nanotubes are shown to be strongly affected by interference effects that arise whenever strong optical transitions are separated by a small energy. This is the case in metallic zigzag and chiral tubes, where one-dimensional singularities in the electronic joint density of states are split due to the trigonal warping of the electronic band structure of a two-dimensional graphene. It is shown that the proper modeling of these interferences is crucial for the identification of the (n,m) indices using Raman spectroscopy.

Original languageEnglish (US)
Article number041404
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume71
Issue number4
DOIs
StatePublished - Jan 2005

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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