Second-order harmonic and combination modes in graphite, single-wall carbon nanotube bundles, and isolated single-wall carbon nanotubes

V. W. Brar, Ge G. Samsonidze, M. S. Dresselhaus, G. Dresselhaus, R. Saito, A. K. Swan, M. S. Ünlü, B. B. Goldberg, A. G. Souza Filho, A. Jorio

Research output: Contribution to journalArticlepeer-review

111 Citations (Scopus)

Abstract

We report a study of second-order combination and overtone modes in highly ordered pyrolytic graphite (HOPG), in single-wall carbon nanotube (SWNT) bundles and in isolated SWNTs. We found both dispersive and nondispersive Raman bands in the range 1650-2100 cm-1, and we show that the appearance and frequency versus laser energy Elaser behavior of these features are in agreement with predictions from double-resonance Raman theory. In the case of SWNTs, these second-order bands depend on the one-dimensional structure of SWNTs, and at the single nanotube level, the spectra vary from tube to tube, depending on tube diameter and chirality and on the energy of the van Hove singularity relative to Elaser.

Original languageEnglish
Article number155418
Pages (from-to)1554181-15541810
Number of pages13987630
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume66
Issue number15
DOIs
Publication statusPublished - 2002 Oct 15
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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