Predictions of pressure-induced transition temperature increase for a variety of high temperature superconductors

Abstract

A wide variety of superconducting oxides are used to test a general model of high pressure induced transition temperature (T c) changes. The T c 's vary from a low of 24 K to a high of 164 K. Although the model is capable of predicting both increases and decreases in T c with pressure, only superconductors that exhibit an increase are considered at this time. Predictions are made of the maximum T^ cP theo for 15 super-conductors as a function of their compressibilities. The theoretical results generally agree well with experiment. This model of T c as a function of pressure is derived from a recent successful phenomenological theory of short coherence length superconductivity.