Correlated Trends of Coexisting Magnetism and Superconductivity in Optimally Electron-Doped Oxypnictides (Articolo in rivista)

Type
Label
  • Correlated Trends of Coexisting Magnetism and Superconductivity in Optimally Electron-Doped Oxypnictides (Articolo in rivista) (literal)
Anno
  • 2011-01-01T00:00:00+01:00 (literal)
Alternative label
  • Sanna, S; Carretta, P; Bonfa, P; Prando, G; Allodi, G; De Renzi, R; Shiroka, T; Lamura, G; Martinelli, A; Putti, M (2011)
    Correlated Trends of Coexisting Magnetism and Superconductivity in Optimally Electron-Doped Oxypnictides
    in Physical review letters (Print)
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • Sanna, S; Carretta, P; Bonfa, P; Prando, G; Allodi, G; De Renzi, R; Shiroka, T; Lamura, G; Martinelli, A; Putti, M (literal)
Pagina inizio
  • 227003 (literal)
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  • 107 (literal)
Rivista
Note
  • ISI Web of Science (WOS) (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#affiliazioni
  • 1Dipartimento di Fisica ''A. Volta'' and Unita` CNISM di Pavia, I-27100 Pavia, Italy 2Dipartimento di Fisica ''E. Amaldi'', Universita` di Roma3-CNISM, I-00146 Roma, Italy 3Dipartimento di Fisica and Unita` CNISM di Parma, I-43124 Parma, Italy 4Laboratorium fu¨r Festko¨rperphysik, ETH-Ho¨nggerberg, CH-8093 Zu¨rich, Switzerland 5Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland 6CNR-SPIN and Universita` di Genova, via Dodecaneso 33, I-16146 Genova, Italy 7CNR-SPIN Corso Perrone 24, I-16146 Genova, Italy (literal)
Titolo
  • Correlated Trends of Coexisting Magnetism and Superconductivity in Optimally Electron-Doped Oxypnictides (literal)
Abstract
  • We report on the recovery of the short-range static magnetic order and on the concomitant degradation of the superconducting state in optimally F-doped SmFe1?xRuxAsO0:85F0:15 for 0:1 ? x & 0:5. The two reduced order parameters coexist within nanometer-size domains in the FeAs layers and eventually disappear around a common critical threshold xc ? 0:6. Superconductivity and magnetism are shown to be closely related to two distinct well-defined local electronic environments of the FeAs layers. The two transition temperatures, controlled by the isoelectronic and diamagnetic Ru substitution, scale with the volume fraction of the corresponding environments. This fact indicates that superconductivity is assisted by magnetic fluctuations, which are frozen whenever a short-range static order appears, and totally vanish above the magnetic dilution threshold xc. (literal)
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