Model prediction of high-temperature pi-states in iron pnictide superconductor-insulator-superconductor Josephson junctions (Articolo in rivista)

Type
Label
  • Model prediction of high-temperature pi-states in iron pnictide superconductor-insulator-superconductor Josephson junctions (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1209/0295-5075/102/47007 (literal)
Alternative label
  • C. Nappi1,3, S. De Nicola2, M. Adamo1 and E. Sarnelli1,3 (2013)
    Model prediction of high-temperature pi-states in iron pnictide superconductor-insulator-superconductor Josephson junctions
    in Europhysics letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • C. Nappi1,3, S. De Nicola2, M. Adamo1 and E. Sarnelli1,3 (literal)
Pagina inizio
  • 47007 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 102 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 4 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1 CNR - Istituto di Cibernetica \"E. Caianiello\" - Via Campi Flegrei 34, I-80078, Pozzuoli, Napoli, Italy, EU 2 CNR - Istituto Nazionale di Ottica - Via Campi Flegrei 34, I-80078, Pozzuoli, Napoli, Italy, EU 3 CNR - SPIN Complesso Universitario di M. S. Angelo - Via Cinthia, I-80126, Napoli, Italy, EU (literal)
Titolo
  • Model prediction of high-temperature pi-states in iron pnictide superconductor-insulator-superconductor Josephson junctions (literal)
Abstract
  • We study the Josephson effect in s±Is± junctions made by two-bands reversed-sign s-wave (s±) superconductive materials. We derive a spectral equation providing the bound Andreev energy states at the interface. The energy spectrum depends on a parameter accounting for the weight of the second band with respect to the first one. For selected values of this parameter and the tunnel barrier amplitude, we predict various features of the Josephson current, among which a possible high-temperature doubly degenerate junction ground state (?-state) and a $\pi \rightarrow 0$ crossover with decreasing temperature. (literal)
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