% IMPORTANT: The following is UTF-8 encoded. This means that in the presence % of non-ASCII characters, it will not work with BibTeX 0.99 or older. % Instead, you should use an up-to-date BibTeX implementation like “bibtex8” or % “biber”. @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}, }