DC transport properties of epitaxial superconducting SmBa2Cu3O7-x films (Articolo in rivista)

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Label
  • DC transport properties of epitaxial superconducting SmBa2Cu3O7-x films (Articolo in rivista) (literal)
Anno
  • 2004-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1016/j.physc.2003.09.054 (literal)
Alternative label
  • A. Nigro; G. Grimaldi; B. Savo; S. Pace; M.A. Boffa; A.M. Cucolo (2004)
    DC transport properties of epitaxial superconducting SmBa2Cu3O7-x films
    in Physica. C, Superconductivity (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Nigro; G. Grimaldi; B. Savo; S. Pace; M.A. Boffa; A.M. Cucolo (literal)
Pagina inizio
  • 277 (literal)
Pagina fine
  • 281 (literal)
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  • http://www.sciencedirect.com/science/article/pii/S0921453403015284 (literal)
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  • 401 (literal)
Rivista
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  • 5 (literal)
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  • 1-4 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • A. Nigro, G. Grimaldi, B. Savo, S. Pace, M.A. Boffa, A.M. Cucolo INFM Research Unit, Department of Physics, University of Salerno, 84081 Baronissi, Italy (literal)
Titolo
  • DC transport properties of epitaxial superconducting SmBa2Cu3O7-x films (literal)
Abstract
  • Dc transport properties of high quality c-axis oriented superconducting SmBa2Cu3O7-x (Sm123) films have been investigated in order to understand the pinning mechanism in this material. The Sm123 films have been deposited on both (1 0 0) SrTiO3 and LaAlO3 single-crystal substrates by a dc sputtering technique in high oxygen partial pressure. Structural characterization was carried out by means of X-ray analysis, scanning electron microscopy and atomic force microscopy. The electrical resistivity as a function of temperature of the as grown samples showed a metallic behavior in the normal state and a superconducting transition with Tc(R=0)=92 K and DTc < 3 K. Critical current density measured at 77 K and in self-field was of the order of 106 A/cm2. The temperature dependence of the current-voltage (I-V ) characteristics of the Sm123 films have been measured. The pinning properties have been analysed by examining the activation energy dependence on temperature and bias current density within a thermally activated vortex motion model. We found that experimental data are consistent with a logarithmic-like behavior of the pinning potential. (literal)
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