Observation of the crossover from two-gap to single-gap superconductivity through specific heat measurements in neutron-irradiated MgB2 (Articolo in rivista)

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Label
  • Observation of the crossover from two-gap to single-gap superconductivity through specific heat measurements in neutron-irradiated MgB2 (Articolo in rivista) (literal)
Anno
  • 2006-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevLett.96.077003 (literal)
Alternative label
  • Putti, M; Affronte, M; Ferdeghini, C; Manfrinetti, P; Tarantini, C; Lehmann, E (2006)
    Observation of the crossover from two-gap to single-gap superconductivity through specific heat measurements in neutron-irradiated MgB2
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Putti, M; Affronte, M; Ferdeghini, C; Manfrinetti, P; Tarantini, C; Lehmann, E (literal)
Pagina inizio
  • 077003 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroVolume
  • 96 (literal)
Rivista
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#numeroFascicolo
  • 7 (literal)
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • CNR, INFM, LAMIA, I-16146 Genoa, Italy; Univ Genoa, Dipartimento Fis, I-16146 Genoa, Italy; CNR, INFM, S3, I-41100 Modena, Italy; Univ Modena & Reggio Emilia, Dipartimento Fis, I-41100 Modena, Italy; Paul Scherrer Inst, CH-5232 Villigen, Switzerland (literal)
Titolo
  • Observation of the crossover from two-gap to single-gap superconductivity through specific heat measurements in neutron-irradiated MgB2 (literal)
Abstract
  • We report specific heat measurements on neutron-irradiated MgB2 samples, for which the critical temperature is lowered to 8.7 K, but the superconducting transition remains extremely sharp, indicative of a defect structure extremely homogeneous. Our results evidence the presence of two superconducting gaps in the temperature range above 21 K, while single-gap superconductivity is well established as a bulk property, not associated with local disorder fluctuations, when T-c decreases to 11 K. (literal)
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