Raman resonance and orientational order in fibers of single-wall carbon nanotubes Auteur(s): Anglaret E., Righi A., Sauvajol J.-L., Bernier Patrick, Vigolo B., Poulin P. (Article) Publié: Physical Review B, vol. 65 p.165426 (2002) Résumé: Polarized Raman spectroscopy is used to study Raman resonance and orientational order in fibers of single-wall carbon nanotubes. The polarized Raman intensity follows essentially the same angle dependence for both radial breathing mode and tangential modes and for both semiconducting and metallic nanotubes. A simple resonant model is proposed, which provides good fits of the whole vertical-vertical and vertical-horizontal data in different kinds of fibers. The model is used to describe orientational order of nanotubes in anisotropic fibers. Commentaires: 165426 |