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@ARTICLE{Zhang:18096,
author = {Zhang, G. and Zhang, Y. and Dong, H. and Krause, H.-J. and
Xie, X. and Braginski, A.I. and Offenhäusser, A. and Jiang,
M.},
title = {{P}arameter tolerance of the {SQUID} {B}ootstrap {C}ircuit},
journal = {Superconductor science and technology},
volume = {24},
issn = {0953-2048},
address = {Bristol},
publisher = {IOP Publ.},
reportid = {PreJuSER-18096},
pages = {015006},
year = {2012},
note = {The Istituto Superiore Mario Boella is gratefully
acknowledged for financial support.},
abstract = {The effect of disorder is investigated in granular
superconductive materials with strong-and weak-links. The
transition is controlled by the interplay of the tunneling g
and intragrain g(intr) conductances, which depend on the
strength of the intergrain coupling. For g << g(intr), the
transition first involves the grain boundary, while for g
similar to g(intr) the transition occurs into the whole
grain. The different intergrain couplings are considered by
modeling the superconducting material as a disordered
network of Josephson junctions. Numerical simulations show
that on increasing the disorder, the resistive transition
occurs for lower temperatures and the curve broadens. These
features are enhanced in disordered superconductors with
strong-links. The different behavior is further checked by
estimating the average network resistance for weak-and
strong-links in the framework of the effective medium
approximation theory. These results may shed light on long
standing puzzles such as: (i) enhancement of the
superconducting transition temperature of many metals in the
granular states; (ii) suppression of superconductivity in
homogeneously disordered films compared to standard granular
systems close to the metal-insulator transition; (iii)
enhanced degradation of superconductivity by doping and
impurities in strongly linked materials, such as magnesium
diboride, compared to weakly linked superconductors, such as
cuprates.},
keywords = {J (WoSType)},
cin = {ICS-8 / PGI-8 / JARA-FIT},
ddc = {530},
cid = {I:(DE-Juel1)ICS-8-20110106 / I:(DE-Juel1)PGI-8-20110106 /
$I:(DE-82)080009_20140620$},
pnm = {Grundlagen für zukünftige Informationstechnologien /
BioSoft: Makromolekulare Systeme und biologische
Informationsverarbeitung},
pid = {G:(DE-Juel1)FUEK412 / G:(DE-Juel1)FUEK505},
shelfmark = {Physics, Applied / Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000285344400007},
doi = {10.1088/0953-2048/24/1/015006},
url = {https://juser.fz-juelich.de/record/18096},
}