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

页码：144516 / 1

页数：5

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