Superconductive niobium films coating carbon nanotube fibers (Articolo in rivista)

Type
Label
  • Superconductive niobium films coating carbon nanotube fibers (Articolo in rivista) (literal)
Anno
  • 2014-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1088/0953-2048/27/11/115006 (literal)
Alternative label
  • Salvato M.; Lucci M.; Ottaviani I.; Cirillo M.; Behabtu N.; Young C.C.; Pasquali M.; Vecchione A.; Fittipaldi R.; Corato V. (2014)
    Superconductive niobium films coating carbon nanotube fibers
    in Superconductor science and technology (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Salvato M.; Lucci M.; Ottaviani I.; Cirillo M.; Behabtu N.; Young C.C.; Pasquali M.; Vecchione A.; Fittipaldi R.; Corato V. (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#url
  • http://www.scopus.com/inward/record.url?eid=2-s2.0-84907901047&partnerID=q2rCbXpz (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 27 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 11 (literal)
Note
  • Scopu (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • Dipartimento di Fisica, MINAS Laboratory, Universit√† di Roma 'Tor Vergata', Roma, I-00133, Italy; Department of Chemical and Biomolecular Engineering, Smalley Institute of Nanoscale Science and Technology, Rice University, Houston, TX, 77005, United States; CNR-SPIN, Dipartimento di Fisica 'E.r. Caianiello', Universit√† di Salerno, via Giovanni Paolo II 132, Fisciano, I-84084, Italy; Unit√† Tecnica Fusione-ENEA C.R. Frascati, via E. Fermi 45, Frascati (Roma), 00044, Italy (literal)
Titolo
  • Superconductive niobium films coating carbon nanotube fibers (literal)
Abstract
  • Superconducting niobium (Nb) has been successfully obtained by sputter deposition on carbon nanotube fibers. The transport properties of the niobium coating the fibers are compared to those of niobium thin films deposited on oxidized Si substrates during the same deposition run. For niobium films with thicknesses above 300 nm, the niobium coating the fibers and the thin films show similar normal state and superconducting properties with critical current density, measured at T = 4.2 K, of the order of 105 A cm-2. Thinner niobium layers coating the fibers also show the onset of the superconducting transition in the resistivity versus temperature dependence, but zero resistance is not observed down to T = 1 K. We evidence by scanning electron microscopy (SEM) and current-voltage measurements that the granular structure of the samples is the main reason for the lack of true global superconductivity for thicknesses below 300 nm. (literal)
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