Properties of high-angle Fe(Se, Te) bicrystal grain boundary junctions (Articolo in rivista)

Type
Label
  • Properties of high-angle Fe(Se, Te) bicrystal grain boundary junctions (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.4871864 (literal)
Alternative label
  • Sarnelli, E.; Adamo, M.; Nappi, C.; Braccini, V.; Kawale, S.; Bellingeri, E.; Ferdeghini, C. (2014)
    Properties of high-angle Fe(Se, Te) bicrystal grain boundary junctions
    in Applied physics letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Sarnelli, E.; Adamo, M.; Nappi, C.; Braccini, V.; Kawale, S.; Bellingeri, E.; Ferdeghini, C. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 104 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 5 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 16 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR SPIN Napoli; University of Salerno; CNR SPIN Genova (literal)
Titolo
  • Properties of high-angle Fe(Se, Te) bicrystal grain boundary junctions (literal)
Abstract
  • We report on the characterization of Fe(Se, Te) grain boundary junctions fabricated on a 45 degrees tilt symmetric bicrystal substrate. The junctions show critical current densities of the order of 10(4) A/cm(2), showing a decay of about one order of magnitude with respect to the critical current density of the film, which is very promising for applications. The current-voltage characteristics show resistively shunted junction-like behaviors, with very low normal-state resistance values, typical of superconducting/normal-metal/superconducting junctions. The magnetic field dependences of the critical currents show the typical behaviors of large Josephson junctions. Nevertheless, the critical current is uniformly distributed across the barrier. We present a simplified theoretical model accounting for this effect. The small influence of faceting along the grain boundary on the electrical parameters may be consistent with an s-wave symmetry of the order parameter. (C) 2014 AIP Publishing LLC. (literal)
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