Effect of Ru substitution on atomic displacements in the layered SmFe1-xRuxAsO0.85F0.15 superconductor (Articolo in rivista)

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  • Effect of Ru substitution on atomic displacements in the layered SmFe1-xRuxAsO0.85F0.15 superconductor (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.85.214530 (literal)
Alternative label
  • A. Iadecola1, B. Joseph1, L. Simonelli2, L. Maugeri1, M. Fratini1, A. Martinelli3, A. Palenzona3, M. Putti3, and N. L. Saini1 (2012)
    Effect of Ru substitution on atomic displacements in the layered SmFe1-xRuxAsO0.85F0.15 superconductor
    in Physical review. B, Condensed matter and materials physics
    (literal)
Http://www.cnr.it/ontology/cnr/pubblicazioni.owl#autori
  • A. Iadecola1, B. Joseph1, L. Simonelli2, L. Maugeri1, M. Fratini1, A. Martinelli3, A. Palenzona3, M. Putti3, and N. L. Saini1 (literal)
Pagina inizio
  • 214530 (literal)
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  • http://link.aps.org/doi/10.1103/PhysRevB.85.214530 (literal)
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  • 85 (literal)
Rivista
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  • 5 (literal)
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  • 21 (literal)
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  • 1Dipartimento di Fisica, Universitá di Roma \"La Sapienza\" - P. le Aldo Moro 2, 00185 Roma, Italy 2European Synchrotron Radiation Facility, BP220, F-38043 Grenoble Cedex, France 3CNR-SPIN and Universitá di Genova, via Dodecaneso 33, 16146 Genova, Italy (literal)
Titolo
  • Effect of Ru substitution on atomic displacements in the layered SmFe1-xRuxAsO0.85F0.15 superconductor (literal)
Abstract
  • The effect of Ru substitution on the local structure of layered SmFe1-xRuxAsO0.85F0.15 superconductor has been studied by As K- and Sm L3-edge x-ray-absorption spectroscopy. The extended x-ray-absorption fine-structure measurements reveal distinct Fe-As and Ru-As bond lengths in the Ru substituted samples with the latter being ~0.03 Å longer. Local disorder induced by the Ru substitution is mainly confined to the FeAs layer while the SmO spacer layer sustains a relative order, consistent with the x-ray-absorption near-edge structure spectra. The results suggest that, in addition to the order/disorder in the active FeAs layer, its coupling to the rare-earth-oxygen spacer layer needs to be considered for describing the electronic properties of these layered superconductors. (literal)
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