Anomalous Pressure Dependences of the Superconducting Transition Temperature of Graphite Intercalation Compounds

摘要

Superconducting graphite intercalation compounds (GIC) exhibit a number of interesting properties such as a high anisotropy of the upper critical magnetic field H/sub c2/ and irreproducible values of the superconducting critical temperature T/sub c/ as measured for different samples of a given compound. Further, the observations of large c-axis compressibilities and a number of temperature- and pressure-induced phase transitions in GIC's imply that their T/sub c/'s may be highly pressure sensitive, and have motivated the present experiments. (ERA citation 10:007161)