Periodic resonance excitation and intertube interaction from quasicontinuous distributed helicities in single-wall carbon nanotubes

Citation
M. Milnera et al., Periodic resonance excitation and intertube interaction from quasicontinuous distributed helicities in single-wall carbon nanotubes, PHYS REV L, 84(6), 2000, pp. 1324-1327
Citations number
18
Categorie Soggetti
Physics
Journal title
PHYSICAL REVIEW LETTERS
ISSN journal
00319007 → ACNP
Volume
84
Issue
6
Year of publication
2000
Pages
1324 - 1327
Database
ISI
SICI code
0031-9007(20000207)84:6<1324:PREAII>2.0.ZU;2-S
Abstract
Photoselective resonance Raman scattering from laser ablation grown single- wall carbon nanotubes is demonstrated to be consistent with a response from tubes with all geometrically allowed helicities. This information is drawn from an analysis of the resonance scattering by combining ab initio calcul ations for the mode frequencies with evaluations of the resonance cross sec tions for isolated tubes. The resonance excitation was found to exhibit an oscillatory behavior. To match the experiments and the calculations, the fr equencies obtained from the latter must be up-shifted by 8.5% on the averag e. This stiffening is ascribed to the tube-tube interaction in the carbon n anotube bundles.