THE THEORETICAL STUDY OF SUPERCONDUCTIVITY IN OXIDE BaPb_(1-x)Bi_(X)O_(3)

摘要

A local Hamiltonian is introduced to study BaPb_(1-x)Bi_(X)O_(3).The usual CPA method is used to deal with the substitutional disorder effect-The superconducting Tc^x relation is calculated and the result is in agreement with experiments.Some remarks on the characteristics of oxide superconductivity are presented.