Phase diagram of a strongly disordered s-wave superconductor, NbN, close to the metal-insulator transition (Articolo in rivista)

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  • Phase diagram of a strongly disordered s-wave superconductor, NbN, close to the metal-insulator transition (Articolo in rivista) (literal)
Anno
  • 2012-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.85.014508 (literal)
Alternative label
  • Madhavi Chand (1); Garima Saraswat (1); Anand Kamlapure (1); Mintu Mondal (1); Sanjeev Kumar (1); John Jesudasan (1); Vivas Bagwe (1); Lara Benfatto (2); Vikram Tripathi (1); Pratap Raychaudhuri (1) (2012)
    Phase diagram of a strongly disordered s-wave superconductor, NbN, close to the metal-insulator transition
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Madhavi Chand (1); Garima Saraswat (1); Anand Kamlapure (1); Mintu Mondal (1); Sanjeev Kumar (1); John Jesudasan (1); Vivas Bagwe (1); Lara Benfatto (2); Vikram Tripathi (1); Pratap Raychaudhuri (1) (literal)
Pagina inizio
  • 014508 (literal)
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  • http://link.aps.org/doi/10.1103/PhysRevB.85.014508 (literal)
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  • 85 (literal)
Rivista
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  • 1 (literal)
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  • Scopu (literal)
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  • 1 Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005, India 2 ISC-CNR and Department of Physics, Sapienza University, Piazzale Aldo Moro 5, 00185 Rome, Italy (literal)
Titolo
  • Phase diagram of a strongly disordered s-wave superconductor, NbN, close to the metal-insulator transition (literal)
Abstract
  • We present a phase diagram as a function of disorder in three-dimensional NbN thin films as the system enters the critical disorder for destruction of the superconducting state. The superconducting state is investigated using a combination of magnetotransport and scanning tunneling spectroscopy measurements. Our studies reveal three disorder regimes. At low disorder (kFl ? 10-4), the system follows the mean field Bardeen-Cooper-Schrieffer behavior, where the superconducting energy gap vanishes at the temperature at which electrical resistance appears. For stronger disorder (1
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