SUBSTITUTION STUDIES AND THE NATURE OF SUPERCONDUCTIVITY IN UPT3

被引：24

作者：

VORENKAMP, T ^{[1
]}

ARONSON, MC ^{[1
]}

KOZIOL, Z ^{[1
]}

BAKKER, K ^{[1
]}

FRANSE, JJM ^{[1
]}

SMITH, JL ^{[1
]}

机构：

[1] LOS ALAMOS NATL LAB, LOS ALAMOS, NM 87545 USA

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.48.6373

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The influence of substitutions on the superconductivity in the systems (U1-xYx)Pt3, (U1-xThx)Pt3, and U(Pt1-xPdx)3 have been studied by resistance and specific-heat measurements for T < 1 K. The results of yttrium and thorium substitution are discussed in terms of the models developed by Hirschfeld et al. and Schmitt-Rink et al. in which the power laws in the low-temperature behavior of several properties are calculated under the assumption of resonant impurity scattering. Both yttrium and palladium are concluded to have a pair-breaking effect in UPt3. For palladium substitution an increase of DELTAT(c) = T(c1) - T(c2) with concentration is reported. The importance of these results for the question of the nature of the order parameter and for the hypothesis of a coupling between the superconducting and magnetic order parameter is discussed.

引用

页码：6373 / 6384

页数：12

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