Superconductivity at 18 K in potassium-doped C60

  title={Superconductivity at 18 K in potassium-doped C60},
  author={Arthur F. Hebard and Matthew J. Rosseinsky and R. C. Haddon and Donald Winslow Murphy and Sivert H. Glarum and Thomas T. M. Palstra and Arthur P. Ramirez and A. Refik Kortan},
THE synthesis of macroscopic amounts of C60 and C70 (fullerenes)1 has stimulated a variety of studies on their chemical and physical properties2,3. We recently demonstrated that C60 and C70 become conductive when doped with alkali metals4. Here we describe low-temperature studies of potassium-doped C60 both as films and bulk samples, and demonstrate that this material becomes superconducting. Superconductivity is demonstrated by microwave, resistivity and Meissner-effect measurements. Both… Expand
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