Resonant Raman spectra of carbon nanotube bundles observed by perpendicularly polarized light

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

Research output: Contribution to journalArticlepeer-review

29 Citations (Scopus)

Abstract

We calculated the resonance condition for the radial breathing Raman mode for single wall carbon nanotube (SWNT) bundles for light polarization parallel and perpendicular to the tube axis. The radial breathing modes that are not observed in isolated SWNTs, but are observed in SWNT bundles, are assigned to a resonance process for light with perpendicular polarization. Asymmetry between the valence and conduction π energy bands becomes essential for obtaining resonance conditions. We find that due to a high joint density of states, armchair SWNTs have the largest optical transition intensities.

Original languageEnglish
Pages (from-to)301-306
Number of pages6
JournalChemical Physics Letters
Volume387
Issue number4-6
DOIs
Publication statusPublished - 2004 Apr 1

ASJC Scopus subject areas

  • Physics and Astronomy(all)
  • Physical and Theoretical Chemistry

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