PRESSURE-DEPENDENCE OF THE SUPERCONDUCTING PHASES IN UPT3

被引：108

作者：

TRAPPMANN, T ^{[1
]}

VONLOHNEYSEN, H ^{[1
]}

TAILLEFER, L ^{[1
]}

机构：

[1] CNRS,CTR RECH TRES BASSES TEMP,F-38042 GRENOBLE,FRANCE

来源：

PHYSICAL REVIEW B | 1991年 / 43卷 / 16期

关键词：

D O I：

10.1103/PhysRevB.43.13714

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report measurements of the specific heat of the heavy-fermion compound UPt3 under hydrostatic pressure p up to 4.5 kbar. The two superconductive transitions at temperatures T(c)+ and T(c)- observed previously under zero pressure decrease at a rate of dT(c)+/dp = -24 mK/kbar and dT(c)-/dp = -5 mK/kbar. The transitions merge at p* = 3.7 kbar and T* = 419 mK. These results suggest that the weak antiferromagnetic order, which is suppressed on the same pressure scale, acts as a symmetry-breaking field in splitting the superconductive transition, thus yielding convincing evidence for a non-BCS order parameter for this system.

引用

页码：13714 / 13716

页数：3

共 20 条

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