Non-cuprate-planar superconductivity

The ruthenate compounds, Gd2-zCe z Sr2Cu2RuO10, GdSr2Cu2RuO8, and doped Sr2YRuO6, all superconduct in their SrO layers, which is why they have almost the same 49 K onset temperatures for superconductivity. The sister compound Ba2GdRuO6, either doped or not, does not superconduct, because L = 0, J 0...

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Bibliographic Details
Published in:Journal of superconductivity 2004-04, Vol.17 (2), p.179-181
Main Authors: DOW, John D, HARSHMAN, Dale R
Format: Article
Language:English
Subjects:
Condensed matter: electronic structure, electrical, magnetic, and optical properties
Cuprates superconductors (high tc and insulating parent compounds)
Exact sciences and technology
Physics
Superconductivity
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Summary:The ruthenate compounds, Gd2-zCe z Sr2Cu2RuO10, GdSr2Cu2RuO8, and doped Sr2YRuO6, all superconduct in their SrO layers, which is why they have almost the same 49 K onset temperatures for superconductivity. The sister compound Ba2GdRuO6, either doped or not, does not superconduct, because L = 0, J 0 Gd breaks pairs and destroys superconductivity in the potentially superconducting BaO layers. High-temperature superconductivity resides in the SrO or BaO layers, or in interstitial-oxygen regions of the crystal, not in the cuprate-planes.
ISSN:0896-1107
1572-9605
DOI:10.1023/B:JOSC.0000021209.45521.6d