Optical phonon modes in solid and doped C60

摘要: Abstract A review of our experimental studies on Raman- and infrared-active vibrational modes in solid doped C60 films is presented compared to group theoretical predictions. Results Raman scattering infrared transmission pristine fee indicate that should be viewed as a molecular with weak intermolecular coupling. Laser flux-dependent results for are which it relatively easy promote photo-transformation C60. Finally, oxygen- alkali metal (M)-doped C60, MxC60 (x = 3,6; M K,Rb,Cs) also presented. For the insulating M6C60 compounds, additional mode splitting due electric field cation sublattice observed. The effect doping Raman-active found depend only weakly radius ion. Thus, principal role dopant appears one charge transfer no evidence significant M-C60 interactions observed spectra. In case metallic K3C60 compound, Hg-derived broaden relative those or M6C60. This observation discussed terms implications superconductivity.