Superconductivity and oxygen ordering correlations in the homologous series of (Cu,Mo)Sr2(Ce,Y)sCu2O5+2s+δ

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en Chmaissem, O. Grigoraviciute, I. Yamauchi, H. Karppinen, M. Marezio, M. 2018-05-22T14:30:03Z 2018-05-22T14:30:03Z 2010
dc.identifier.citation Chmaissem , O , Grigoraviciute , I , Yamauchi , H , Karppinen , M & Marezio , M 2010 , ' Superconductivity and oxygen ordering correlations in the homologous series of (Cu,Mo)Sr2(Ce,Y)sCu2O5+2s+δ ' PHYSICAL REVIEW B , vol 82 , no. 10 , 104507 , pp. 1-9 . DOI: 10.1103/PhysRevB.82.104507 en
dc.identifier.issn 1098-0121
dc.identifier.issn 1550-235X
dc.identifier.other PURE UUID: 1a6685a9-0cc9-436c-8244-a8935f5addab
dc.identifier.other PURE ITEMURL:
dc.identifier.other PURE LINK:
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dc.description.abstract A detailed study of the structure-property relationship is reported for the first four members of the high-Tc superconducting homologous series of (Cu,Mo)Sr2(Ce,Y)sCu2O5+2s+δ [(Cu,Mo)−12s2]. In this series, the adjacent CuO2 planes are separated by a single Y-cation layer for s=1 and a fluorite-type (Ce,Y)−[O2−(Ce,Y)]s−1 layer block for s≥2. Even though this series may be considered a conventional homologous series from the chemical point of view, we emphasize that the structures are different from those of the Tl-, Hg-, Bi-, etc.,-based series by the fact that the inserted fluorite-type blocks are insulating. We show the formation of the higher s members via intercalation of additional Ce-O2 layer(s) into the crystal lattices of the lower members of the series. Neutron powder-diffraction data demonstrate that the Ce/Y ratio is not constant at the different (Ce,Y) layers in the fluorite-structured block and that the innermost (Ce,Y) layer(s) are significantly Ce rich compared with the outer ones. Two independent crystallographic sites are identified for the extra oxygen atoms in the basal (Cu0.75Mo0.25)O1+δ plane with site fractional occupancies that strongly correlate with the properties of the material. A short-range ordered structure is proposed for the (Cu0.75Mo0.25)O1+δ layers that could explain both the superconducting properties of the materials and the enhanced Tc for the first member of the series. en
dc.format.extent 1-9
dc.format.mimetype application/pdf
dc.language.iso en en
dc.relation.ispartofseries PHYSICAL REVIEW B en
dc.relation.ispartofseries Volume 82, issue 10 en
dc.rights openAccess en
dc.subject.other 116 Chemical sciences en
dc.title Superconductivity and oxygen ordering correlations in the homologous series of (Cu,Mo)Sr2(Ce,Y)sCu2O5+2s+δ en
dc.type A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä fi
dc.description.version Peer reviewed en
dc.contributor.department Department of Chemistry en
dc.subject.keyword 116 Chemical sciences
dc.identifier.urn URN:NBN:fi:aalto-201805222219
dc.identifier.doi 10.1103/PhysRevB.82.104507
dc.type.version publishedVersion

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