Indication of Meissner Effect in Sulfur-Substituted Strontium Ruthenates

Details Indication of Meissner Effect in Sulfur-Substituted Strontium Ruthenates Indication of Meissner Effect in Sulfur-Substituted Strontium Ruthenates

2011-09-25

arxiv.org/abs/1109.5385v1

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures

Scientific paper

Ceramic samples of Sr2RuO(4-y)Sy (y=0.03-1.2) with intended isovalent substitution of oxygen by sulfur have been synthesized and explored in the temperature range 4-300K. It is found that at a range of optimum sulfur substitution the magnetic response of ceramic samples reveals large diamagnetic signal with amplitudes approaching comparability with that of the YBCO-superconductors. Contrary to a pure ceramic Sr2RuO4, if properly optimized, the resistivity of sulfur-substituted samples has a metallic behavior except at lower temperatures where an upturn occurs. Both synthesis conditions and results of measurements are reported. The Meissner effect may point to high-temperature superconductivity.

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