We develop exciton-photon and exciton-phonon interaction matrix elements for single wall carbon nanotubes within extended tight binding method. The exciton-photon matrix elements using the extended tight binding wave function have a large chirality dependence compared with the previous calculation by simple tight binding method. Using the exciton-photon and exciton-phonon matrix elements presented here, we calculate resonance Raman intensity for radial breathing mode as a function of diameter and chiral angle. Excitonic effect of resonance Raman intensities for the radial breathing mode is enhanced by the curvature and trigonal warping effects.
ASJC Scopus subject areas
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry