Controlling flux flow dissipation by changing flux pinning in superconducting films (Articolo in rivista)

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  • Controlling flux flow dissipation by changing flux pinning in superconducting films (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1063/1.4718309 (literal)
Alternative label
  • G. Grimaldi1, A. Leo1, A. Nigro1, A. V. Silhanek2,3, N. Verellen3, V. V. Moshchalkov3, M. V. Milo?evi?4, A. Casaburi5, R. Cristiano5, and S. Pace1 (2012)
    Controlling flux flow dissipation by changing flux pinning in superconducting films
    in Applied physics letters
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • G. Grimaldi1, A. Leo1, A. Nigro1, A. V. Silhanek2,3, N. Verellen3, V. V. Moshchalkov3, M. V. Milo?evi?4, A. Casaburi5, R. Cristiano5, and S. Pace1 (literal)
Pagina inizio
  • 202601 (literal)
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  • http://dx.doi.org/10.1063/1.4718309 (literal)
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  • 100 (literal)
Rivista
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  • 4 (literal)
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  • 20 (literal)
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  • 1CNR SPIN Salerno and Dipartimento di Fisica \"E. R. Caianiello,\" Università degli Studi di Salerno, via Ponte Don Melillo, 84084 Fisciano (SA), Italy 2Départment de Physique, Université de Liège, B-4000 Sart Tilman, Belgium 3INPAC--Institute for Nanoscale Physics and Chemistry, Nanoscale Superconductivity and Magnetism Group, K. U. Leuven, Celestijnenlaan 200D, B-3001 Leuven, Belgium 4Departement Fysica, Universiteit Antwerpen, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium 5Istituto di Cibernetica \"E. Caianiello,\" CNR, 80078 Pozzuoli (Na), Italy (literal)
Titolo
  • Controlling flux flow dissipation by changing flux pinning in superconducting films (literal)
Abstract
  • We study the flux flow state in superconducting materials characterized by rather strong intrinsic pinning, such as Nb, NbN, and nanostructured Al thin films, in which we drag the superconducting dissipative state into the normal state by current biasing. We modify the vortex pinning strength either by ion irradiation, by tuning the measuring temperature or by including artificial pinning centers. We measure critical flux flow voltages for all materials and the same effect is observed: switching to low flux flow dissipations at low fields for an intermediate pinning regime. This mechanism offers a way to additionally promote the stability of the superconducting state. (literal)
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