A STUDY OF THE DC SUSCEPTIBILITY OF GRANULAR SUPERCONDUCTORS BY MEANSOF JOSEPHSON-JUNCTION ARRAY MODELS

Authors
CAPUTO P DELUCA R GAMBARDELLA U PACE S
Citation
P. Caputo et al., A STUDY OF THE DC SUSCEPTIBILITY OF GRANULAR SUPERCONDUCTORS BY MEANSOF JOSEPHSON-JUNCTION ARRAY MODELS, Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics, 16(10-11), 1994, pp. 1851-1856
Citations number
9
Categorie Soggetti
Physics
Journal title
Nuovo cimento della Societa italiana di fisica. D, Condensed matter,atomic, molecular and chemical physics, biophysics → ACNP
ISSN journal
03926737
Volume
16
Issue
10-11
Year of publication
1994
Pages
1851 - 1856
Database
ISI
SICI code
0392-6737(1994)16:10-11<1851:ASOTDS>2.0.ZU;2-T
Abstract
The field-cooled d.c. susceptibility of granular superconductors is st udied by means of simple Josephson-junction array models. It is shown that a paramagnetic behaviour after field cooling for these systems, f or certain ranges of the applied field, is a natural consequence of th eir topological structure and of the presence of weak superconducting coupling between grains. In this way, the recently detected positive f ield-cooled d.c. susceptibility is interpreted by means of a tradition al Josephson-junction network approach.