Optical properties of the vibrations in charged C${}_{60}$ molecules

Abstract

The transition strengths for the four infrared-active vibrations of charged C${}_{60}$ molecules are evaluated in self-consistent density functional theory using the local density approximation. The oscillator strengths for the second and fourth modes are strongly enhanced relative to the neutral C${}_{60}$ molecule, in good agreement with the experimental observation of ``giant resonances'' for those two modes. Previous theory, based on a ``charged phonon'' model, predicted a quadratic dependence of the oscillator strength on doping, but this is not borne out in our calculations.

10 pages, RevTeX3.0

References in corpus (1)

• In-Situ Infrared Transmission Study of Rb- and K-Doped Fullerenes