Onset of magnetism in optimally electron-doped LFe1-xRuxAsO1-yFy (L = La, Nd, or Sm) superconductors around x=1/4 (Articolo in rivista)

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  • Onset of magnetism in optimally electron-doped LFe1-xRuxAsO1-yFy (L = La, Nd, or Sm) superconductors around x=1/4 (Articolo in rivista) (literal)
Anno
  • 2013-01-01T00:00:00+01:00 (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#doi
  • 10.1103/PhysRevB.87.134518 (literal)
Alternative label
  • S. Sanna,1,P. Carretta,1R. De Renzi,2G. Prando,1,3P. Bonfà,2M. Mazzani,2G. Lamura,4T. Shiroka,5,6Y. Kobayashi,7and M. Sato7 (2013)
    Onset of magnetism in optimally electron-doped LFe1-xRuxAsO1-yFy (L = La, Nd, or Sm) superconductors around x=1/4
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • S. Sanna,1,P. Carretta,1R. De Renzi,2G. Prando,1,3P. Bonfà,2M. Mazzani,2G. Lamura,4T. Shiroka,5,6Y. Kobayashi,7and M. Sato7 (literal)
Pagina inizio
  • 134518 (literal)
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  • 87 (literal)
Rivista
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  • 13 (literal)
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  • 1Department of Physics, University of Pavia-CNISM, I-27100 Pavia, Italy 2Department of Physics and Earth Sciences, University of Parma-CNISM, I-43121 Parma, Italy 3Leibniz-Institut fur Festkorper- und Werkstoffforschung (IFW) Dresden, D-01171 Dresden, Germany 4CNR-SPIN and Universita di Genova, via Dodecaneso 33, I-16146 Genova, Italy 5Laboratorium fur Festkorperphysik, ETH-Honggerberg, CH-8093 Zurich, Switzerland 6 Paul Scherrer Institut, CH-5232 Villigen PSI, Switzerland 7 Department of Physics, Division of Material Science, Nagoya University, Furo-cho, Chikusa-ku, Nagoya 464-8602, Japan (literal)
Titolo
  • Onset of magnetism in optimally electron-doped LFe1-xRuxAsO1-yFy (L = La, Nd, or Sm) superconductors around x=1/4 (literal)
Abstract
  • The appearance of static magnetism, nanoscopically coexisting with superconductivity, is shown to be a general feature of optimally electron-doped LFe1-xRuxAsO1-yFy superconductors (L represents a lanthanide ion) upon isovalent substitution of Fe by Ru. The magnetic ordering temperature TN and the magnitude of the internal field display a domelike dependence on x, peaked around x=1/4, with higher TN values for those materials characterized by a larger z cell coordinate of As. Remarkably, the latter are also those with the highest superconducting transition temperatures (Tc) for x=0. The reduction of Tc(x) is found to be significant in the x region of the phase diagram where the static magnetism develops. Upon increasing the Ru content superconductivity eventually disappears, but only at x?0.6. (literal)
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