Pressure Dependence of Superconductivity in Single-Phase K 3 C 60
- 28 June 1991
- journal article
- other
- Published by American Association for the Advancement of Science (AAAS) in Science
- Vol. 252 (5014) , 1829-1831
- https://doi.org/10.1126/science.252.5014.1829
Abstract
The superconducting compound K 3 C 60 (with transition temperature T c = 19.3 kelvin at ambient pressure), formed as a single phase by reaction of alkali vapor with solids of the icosahedral C 60 molecule (buckminsterfullerene), shows a very large decrease of T c with increasing pressure. Susceptibility measurements on sintered pellets showing bulk superconductivity are reported up to 21 kilobars of pressure, where T c is already less than 8 kelvin. The results are consistent with a piling up of the density of states at the Fermi level.Keywords
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