Possible spin triplet superconductivity in NaxCoO2.yH2O.
Possible spin triplet superconductivity in NaxCoO2.yH2O.
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DOI：
10.1103/physrevlett.91.257006
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发表时间：
2003-04
影响因子：
8.6
通讯作者：
A. Tanaka;X. Hu
中科院分区：
文献类型：
--
作者：
A. Tanaka;X. Hu
基于对称性的考虑与现有实验结果的输入相结合，使得由反铁磁涨落触发的新型自旋三重态超导电性可能在新发现的层状钴NaxCoO2.yH(2)O中实现。在所提议的图中，配对过程与高级的Sr2RuO4类似，但由于费米面的六方结构提供了更强的配对倾向，因此无法通过半填充外推的共振价键物理来实现配对。
Symmetry-based considerations are combined with inputs from available experimental results to make the case that a novel spin-triplet superconductivity triggered by antiferromagnetic fluctuations may be realized in the newly discovered layered cobaltide NaxCoO2.yH(2)O. In the proposed picture, inaccessible via resonating-valence-bond physics extrapolated from half-filling, the pairing process is similar to that advanced for Sr2RuO4, but enjoys a further advantage coming from the hexagonal structure of the Fermi surface which gives a stronger pairing tendency.