Possible singlet-to-triplet pairing transition in NaxCoO2•yH2O -: art. no. 144516

被引：26
|
作者：
Maska, MM
Mierzejewski, M
Andrzejewski, B
Foo, ML
Cava, RJ
Klimczuk, T
机构：
[1] Silesian Univ, Inst Phys, Dept Theoret Phys, PL-40007 Katowice, Poland
[2] Polish Acad Sci, Inst Mol Phys, PL-60179 Poznan, Poland
[3] Princeton Univ, Dept Chem, Princeton, NJ 08545 USA
[4] Gdansk Univ Technol, Fac Appl Phys & Math, PL-80952 Gdansk, Poland
来源：
PHYSICAL REVIEW B | 2004年 / 70卷 / 14期
基金：
美国国家科学基金会;
关键词：
D O I：
10.1103/PhysRevB.70.144516
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We present precise measurements of the upper critical field (H-c2) in the recently discovered cobalt oxide superconductor. We have found that the critical field has an unusual temperature dependence; namely, there is an abrupt change of the slope of H-c2(T) in a weak-field regime. In order to explain this result we have derived and solved Gor'kov equations on a triangular lattice. Our experimental results may be interpreted in terms of the field-induced transition from singlet to triplet superconductivity.
引用
收藏
页码：144516 / 1
页数：5
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