Abstract

Abstract This work covers an advanced investigation of the single crystal growth process for fullerenic materials and the contribution of Raman and IR spectroscopy to the understanding of the fcc high temperature rotor phase and the low temperature sc ratchet phase of pristine C60. In addition substantial research contributions to the understanding of alkali metal doped fullerenes are presented. Alkali metal doped crystals are studied with particular attention to the line broadening in the superconducting A 3C60 phase and to the phases with stoichiometry A1C60. For the former electron-phonon coupling constants could be determined for all fivefold degenerated gerade modes and a total coupling strenght of λ = 0.90 was found. For the latter the different experimental conditions for obtaining the phase separated intermediate state or alternatively the orthorhombic polymeric state are analysed. Vibrational spectra for the polymeric state obtained from phototransformation and from mono alkali metal doping are f...

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