Initial dissipation and current-voltage characteristics of superconductors containing fractal clusters of a normal phase

Thumbnail Image

Date

Authors

Journal Title

Journal ISSN

Volume Title

Publisher

Abstract

Description

The influence of fractal clusters of a normal phase on distinctive features of current-voltage characteristic of percolative type-II superconductors is considered. The results of high-resolution measurements of the differential resistance of BPSCCO/Ag composites are discussed in the context of magnetic flux dynamics. The region of initial dissipation is observed on current-voltage characteristics in the neighborhood of the transition into a resistive state. In the course of this stage of resistive transition the vortices start to break away from the normal-phase clusters, which act as pinning centers. The effect of transport current on vortex depinning is investigated. A broad current range of initial dissipation is considered as an evidence of fractal nature of the normal-phase clusters.
4 pages with 2 figures

Keywords

Superconductivity, Materials Science

Citation

URI

http://salesiana.dossiersoluciones.com/handle/123456789/21233

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0304354
 http://arxiv.org/abs/cond-mat/0304354

Collections

arXiv