Kernforschungszentrum Karlsruhe Gmbh Inst Nukl Festkorperphys Postfach 3640 W-7500 Karlsruhe 1 Germany
Max Planck Inst Festkorperforsch W-7000 Stuttgart 80 Germany

The high-resolution photoemission spectral profiles of the conduction bands of K3C60 and Rb3C60 recorded at 10 K exhibit fine structure not observed at higher temperatures. Calculations of the effects of electron-boson coupling in A3C60 within a simple model demonstrate that the features in the low-temperature photoemission spectral weight are consistent with satellites due to phonons and the charge-carrier plasmon. Possible causes of the observed temperature dependence of the conduction-band spectral weight are discussed.
 

Physical Review B, 47 13944-13947, 1993.