CONDUCTIVITY AND SUPERCONDUCTIVITY IN ALKALI-METAL DOPED C-60

Solid C60 undergoes doping with alkali metal vapors to produce intercalation compounds that are conductors. During the doping process the predominant phases present are C60, A3C60, and A6C60. The A3C60 compounds are formed from C60 by occupancy of the interstitial sites of the face-centered cubic (fcc) lattice. These phases constitute the first three-dimensional organic conductors and for A = K or Rb, the A3C60 compounds are superconductors. In this chapter we summarize the current status of the research on these new materials, including some of the physical properties that have been measured. The structure, conductivity, magnetism, microwave loss, and Raman and electronic structures are discussed.