Dissipation in ultra-thin current-carrying superconducting bridges; evidence for quantum tunneling of Pearl vortices (Articolo in rivista)

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Label
  • Dissipation in ultra-thin current-carrying superconducting bridges; evidence for quantum tunneling of Pearl vortices (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1209/epl/i2005-10485-3 (literal)
Alternative label
  • Tafuri, F; Kirtley, JR; Born, D; Stornaiuolo, D; Medaglia, PG; Orgiani, P; Balestrino, G; Kogan, VG (2006)
    Dissipation in ultra-thin current-carrying superconducting bridges; evidence for quantum tunneling of Pearl vortices
    in Europhysics letters (Print); EDP Sciences, Les Ulis Cedex (Francia)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Tafuri, F; Kirtley, JR; Born, D; Stornaiuolo, D; Medaglia, PG; Orgiani, P; Balestrino, G; Kogan, VG (literal)
Pagina inizio
  • 948 (literal)
Pagina fine
  • 954 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://iopscience.iop.org/0295-5075/73/6/948 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 73 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#pagineTotali
  • 7 (literal)
Note
  • Scopu (literal)
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Univ Naples 2, Dipartimento Ingn Informaz, Aversa, CE, Italy; IBM Corp, Watson Res Ctr, Yorktown Hts, NY 10598 USA; Univ Naples Federico II, Dipartimento Sci Fisiche, CNR, INFM Coherentia, Naples, Italy; Univ Roma Tor Vergata, Dipartimento Ingn Meccan, CNR, INFM Coherentia, I-00173 Rome, Italy; Iowa State Univ, Ames Lab, DOE, Ames, IA 50011 USA; Iowa State Univ, Dept Phys & Astron, Ames, IA 50011 USA (literal)
Titolo
  • Dissipation in ultra-thin current-carrying superconducting bridges; evidence for quantum tunneling of Pearl vortices (literal)
Abstract
  • We have made zero-field current-voltage (IV) measurements of artificially layered high-T-c thin-film bridges. SQUID microscopy of these films provides Pearl lengths. longer than the bridge widths, and shows current distributions that are uniform across the bridges. At high temperatures and high currents the voltages follow the power law V proportional to I-n, with n = phi(2)(0)/8 pi(2)Lambda kT + 1, in good agreement with the predictions for thermally activated vortex motion. At low temperatures, the IV's are better fit by ln V linear in I-2, as expected if the low-temperature dissipation is dominated by quantum tunneling of individual Pearl vortices. (literal)
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