Superconducting-insulator transition in disordered Josephson junctions networks (Articolo in rivista)

Type
Label
  • Superconducting-insulator transition in disordered Josephson junctions networks (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1140/epjb/e2012-30216-x (literal)
Alternative label
  • Linda Ponta (1); Valentina Andreoli (2); Anna Carbone (1,3,4) (2013)
    Superconducting-insulator transition in disordered Josephson junctions networks
    in The European physical journal. B, Condensed matter physics (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Linda Ponta (1); Valentina Andreoli (2); Anna Carbone (1,3,4) (literal)
Pagina inizio
  • art_n_24 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://epjb.epj.org/articles/epjb/abs/2013/01/b120216/b120216.html (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 86 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 1 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • (1) Physics Department, Politecnico di Torino, Corso Duca degli Abruzzi 24, 10129 Torino, Italy (2) Istituto Nazionale di Ricerca Metrologica (INRIM), Strada delle Cacce 91, 10135 Torino, Italy (3) Istituto dei Sistemi Complessi, ISC-CNR Roma, Italy (4) ETH Swiss Federal Institute of Technology, 8006 Zurich, Switzerland (literal)
Titolo
  • Superconducting-insulator transition in disordered Josephson junctions networks (literal)
Abstract
  • The superconducting-insulator transition is simulated in disordered networks of Josephson junctions with thermally activated Arrhenius-like resistive shunt. By solving the conductance matrix of the network, the transition is reproduced in different experimental conditions by tuning thickness, charge density and disorder degree. In particular, on increasing fluctuations of the parameters entering the Josephson coupling and the Coulomb energy of the junctions, the transition occurs for decreasing values of the critical temperature Tc and increasing values of the activation temperature To. The results of the simulation compare well with recent experiments where the mesoscopic fluctuations of the phase have been suggested as the mechanism underlying the phenomenon of emergent granularity in otherwise homogeneous films. The proposed approach is compared with the results obtained on TiN films and nanopatterned arrays of weak-links, where the superconductor-insulator transition is directly stimulated (literal)
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