Experimental Evidence for Spin-Triplet Superconductivity in Sr2RuO4

被引：0
作者：
Y. Maeno
S. NishiZaki
Z. Q. Mao
机构：
[1] Kyoto University,Department of Physics, Graduate School of Science
[2] Japan Science and Technology Corporation,CREST
来源：
Journal of Superconductivity | 1999年 / 12卷
关键词：
Sr; RuO; spin-triplet superconductivity; specific heat; upper critical field; quasi-two-dimensional superconductor;
D O I：
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中图分类号：
学科分类号：
摘要：
We review the experimental evidence for spin-triplet superconductivity in Sr2RuO4. The Knight shift experiments decisively demonstrated that the Cooper-pair symmetry is spin triplet. We discuss the most probable wave function of the Cooper pairs on the basis of the results of a number of key experiments. We point out that a simple picture of the unitary state with the isotropic gap is not compatible with the observed behavior of the specific heat, and that a profound modification of the pairing wave function is needed. We also present the in-plane angular dependence of the upper critical field, with the field applied exactly parallel to the quasi-two-dimensional plane. We discuss the possible implication of the observed fourfold anisotropy in connection with the proposed second superconducting state with a line-node gap.
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页码：535 / 541
页数：6
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