| Issue |
Europhys. Lett.
Volume 44, Number 4, November II 1998
|
|
|---|---|---|
| Page(s) | 518 - 524 | |
| Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
| DOI | https://doi.org/10.1209/epl/i1998-00504-y | |
| Published online | 01 September 2002 | |
Spectroscopic analysis of different types of single-wall carbon nanotubes
1
Universität Wien, Institut für Materialphysik - Strudlhofgasse 4, A-1090 Wien, Austria
2
Eötvös University, Department for Biological Physics, Puskin U. 5-7, H-1088 Budapest, Hungary
3
Department of Chemistry, Rice University - Houston, TX 77005, USA
Received:
25
May
1998
Accepted:
1
October
1998
The Raman response of the radial breathing mode in single-wall
carbon
nanotubes was analyzed for excitation with 10 different laser lines. The line
shape was fitted with 14 Voigtian oscillators which could be correlated to
tubes of different helicity. The strongest lines were observed between 172
and 
. For an assignment frequencies
evaluated from a density functional calculation and scattering intensities for
the resonance transitions were used. The 5 strongest lines observed are
consistent with scattering from tubes with 11 different helicities.
From the evaluation of the scattering intensities the nearest-neighbor
integral between two carbon atoms on the curved sheet
was found to be 
.
PACS: 78.30.-j – Infrared and Raman spectra / 78.66.Qn – Polymers; organic compounds / 63.20.Dj – Phonon states and bands, normal modes, and phonon dispersion
© EDP Sciences, 1998
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