Raman intensity of single-wall carbon nanotubes

作者：Riichiro Saito, T. Takeya, T. Kimura, G. Dresselhaus, M. S. Dresselhaus · 发表于：Physical review. B, Condensed matter · 年份：1998 · DOI：10.1103/physrevb.57.4145 · 被引用次数：598 · 研究领域：Carbon Nanotubes in Composites、Graphene research and applications、Diamond and Carbon-based Materials Research

Using nonresonant bond-polarization theory, the Raman intensity of a single-wall carbon nanotube is calculated as a function of the polarization of light and the chirality of the carbon nanotube. The force-constant tensor for calculating phonon dispersion relations in the nanotubes is scaled from those for two-dimensional graphite. The calculated Raman spectra do not depend much on the chirality, while their frequencies clearly depend on the nanotube diameter. The polarization and sample orientation dependence of the Raman intensity shows that the symmetry of the Raman modes can be obtained by varying the direction of the nanotube axis, keeping the polarization vectors of the light fixed.