Abstract
A new set of C-C interball force constant was developed in order to reproduce the low wavenumber density of states measured by neutron scattering and the Raman spectra of the C-60 dimer and C-60 polymer chain. The nonresonant Raman spectra of the C-60 dimer and C-60 polymer confined inside a (10, 10) single-walled carbon nanotube were calculated in the framework of the bond-polarization theory by using the spectral moments method. The main changes of the Raman spectrum as a function of the organization of the C-60 molecules inside the nanotubes were identified. We found that the radial breathing modes of a (10, 10) single-walled carbon nanotube are more sensitive on the structure of the C-60 molecules than the G-modes. These predictions are useful to interpret the experimental Raman spectrum of fullerene peapods.