INSULATOR-SUPERCONDUCTOR TRANSITION IN 3D GRANULAR AL-GE FILMS

Authors
GERBER A MILNER A DEUTSCHER G KARPOVSKY M GLADKIKH A
Citation
A. Gerber et al., INSULATOR-SUPERCONDUCTOR TRANSITION IN 3D GRANULAR AL-GE FILMS, Physical review letters, 78(22), 1997, pp. 4277-4280
Citations number
35
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
78
Issue
22
Year of publication
1997
Pages
4277 - 4280
Database
ISI
SICI code
0031-9007(1997)78:22<4277:ITI3GA>2.0.ZU;2-4
Abstract
We report the results of high magnetic field study of granular 3D Al-G e and demonstrate that intragranular superconductivity leads in truly insulating samples (with an exponentially diverging normal state resis tivity), either to a global superconducting phase coherent state, or t o a ''superconductor-insulator'' state with Cooper pairs totally local ized within individual grains, depending on the strength of the interg ranular Josephson coupling.