Nonequilibrium characteristics in all-superconducting tunnel structures (Articolo in rivista)

Type
Label
  • Nonequilibrium characteristics in all-superconducting tunnel structures (Articolo in rivista) (literal)
Anno
  • 2007-01-01T00:00:00+01:00 (literal)
Alternative label
  • Laakso, MA; Virtanen, P; Giazotto, F; Heikkila, TT (2007)
    Nonequilibrium characteristics in all-superconducting tunnel structures
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Laakso, MA; Virtanen, P; Giazotto, F; Heikkila, TT (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 75 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Helsinki Univ Technol, Low Temp Lab, FIN-02015 Helsinki, Finland; CNR, NEST, INFM, I-56126 Pisa, Italy; Scuola Normale Super Pisa, I-56126 Pisa, Italy (literal)
Titolo
  • Nonequilibrium characteristics in all-superconducting tunnel structures (literal)
Abstract
  • We study the nonequilibrium characteristics of superconducting tunnel structures in the case when one of the superconductors is a small island confined between large superconductors. The state of this island can be probed, for example, via the supercurrent flowing through it. We study both the far-from-equilibrium limit when the rate of injection for the electrons into the island exceeds the energy relaxation inside it, and the quasiequilibrium limit when the electrons equilibrate between themselves. We also address the crossover between these limits by employing the collision integral derived for the superconducting case. The clearest signatures of the nonequilibrium limit are the anomalous heating effects seen as a supercurrent suppression at low voltages, and the hysteresis at voltages close to the gap edge 2 Delta/e, resulting from the peculiar form of the nonequilibrium distribution function. (literal)
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