Origin of the Superconductivity in the Y-Sr-Ru-O and Y-Sr-Cu-O Systems

Details Origin of the Superconductivity in the Y-Sr-Ru-O and Y-Sr-Cu-O Systems Origin of the Superconductivity in the Y-Sr-Ru-O and Y-Sr-Cu-O Systems

2007-03-22

arxiv.org/abs/cond-mat/0703593v2

Physics

Condensed Matter

Superconductivity

Scientific paper

10.1103/PhysRevB.76.014501

We report on the structural, magnetic, and Raman-scattering studies of double perovskite structure Sr2Y(Ru1-xCux)O6-d systems made by systematic synthesis processes with various numbers of doping concentrations and sintering temperatures. We observed different behaviors resulting from the different thermal treatments. In particular, superconductivity in Cu-doped Sr2YRuO6 has been observed only for partially melted ceramic materials. We show that superconductivity is associated with the 1:2:3 phase (YSr2Cu3Ot), similar to that of Y-Sr-Cu-O samples sintered at high temperature.

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