HIGH-T-C SUPERCONDUCTIVITY IN A CORRELATED DISORDER-INDUCED LOCALIZEDSYSTEM

Authors
DALLACASA V FEDUZI R
Citation
V. Dallacasa et R. Feduzi, HIGH-T-C SUPERCONDUCTIVITY IN A CORRELATED DISORDER-INDUCED LOCALIZEDSYSTEM, Physica. C, Superconductivity, 251(1-2), 1995, pp. 156-164
Citations number
53
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
251
Issue
1-2
Year of publication
1995
Pages
156 - 164
Database
ISI
SICI code
0921-4534(1995)251:1-2<156:HSIACD>2.0.ZU;2-T
Abstract
A quantum-percolation model is used to discuss experimental transport properties of the YBa2Cu3-xLixO6.5+y and Bi2Sr2CaCu2-xLixO8+y supercon ducting oxides. A cross-over from variable-range hopping conduction, i n the insulating and semimetallic states, to Coulomb gap conduction in the ''metallic'' state is observed. This provides evidence of the cor related disorder-induced localized character of the unusual ''metallic '' dependence of high-T-c superconductors.