Field–temperature phase diagram of the 3-K phase of Sr2RuO4

We have investigated the field–temperature phase diagram of the 3-K phase (Sr2RuO4–Ru eutectic) for two field directions (H∥ab and H∥c) using resistivity data. We have found an upturn curvature in the Hc2(T) curve for H∥c and a rather gradual temperature dependence of Hc2 close to Tc. We propose tha...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2003-05, Vol.388-389, p.507-508
Main Authors: Yaguchi, Hiroshi, Wada, Masahiko, Maeno, Yoshiteru, Ishiguro, Takehiko
Format: Article
Language:English
Subjects:
Eutectic
Spin-triplet pairing
Sr2RuO4
Surface superconductivity
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Summary:We have investigated the field–temperature phase diagram of the 3-K phase (Sr2RuO4–Ru eutectic) for two field directions (H∥ab and H∥c) using resistivity data. We have found an upturn curvature in the Hc2(T) curve for H∥c and a rather gradual temperature dependence of Hc2 close to Tc. We propose that these characteristic features can be explained, at least in a qualitative fashion, on the basis of a theory that assumes surface superconductivity with a two-component order parameter at the interface between Sr2RuO4 and Ru inclusions.
ISSN:0921-4534
1873-2143
DOI:10.1016/S0921-4534(02)02532-7