Optical and magneto-optical properties of the simple cubic phase of the C sub 60 crystal

Using the Hartree-Fock and single configuration interaction model in conjunction with the local field method, the dielectric tensor, refractive index, circular dichroism, birefringence coefficient and the effects of spatial dispersion on the spectrum of the transverse normal polariton waves of the simple cubic phase of the C sub 60 crystal are calculated. Our results on magneto-optical circular dichroism in the energy range 3-4 eV almost reproduces the reported experimental results. Also, our results on the effect of spatial dispersion, compared with the non-dispersive case, indicate that the first branch of the transverse normal polariton in the C sub 60 crystal is due to the coupling of the second excitonic state of the C sub 60 molecule with the electromagnetic field and the first excitonic state has very weak coupling.