Ergodic versus nonergodic behavior in oxygen deficient high-T_c superconductors

摘要

The oxygen defects induced phase transition from nonergodic to ergodic statein superconductors with intragrain granularity is considered within thesuperconductive glass model. The model predictions are found to be in aqualitative agreement with some experimental observations in deoxygenatedhigh-T_c single crystals.