Analysis and interpretation of current noise in high T-c granular superconductors during their resistive transition

摘要

A brief review of the non stationary noise produced during the transition process of different types of superconducting materials is presented. Noise analysis evidence that very different mechanisms are at the base of the transition in monocrystalline, weak-link dominated or metallic-like granularhigh temperature superconductors. Models of the transition process which are in good agreement with the experimental results will be also given and discussed.