Evolution from first-order valence transition to heavy-fermion behavior in YbIn1-xAgxCu4

被引：139

作者：

Sarrao, JL

Immer, CD

Benton, CL

Fisk, Z

Lawrence, JM

Mandrus, D

Thompson, JD

机构：

[1] UNIV CALIF IRVINE,DEPT PHYS,IRVINE,CA 92717

[2] LOS ALAMOS NATL LAB,DIV MAT SCI & TECHNOL,LOS ALAMOS,NM 87545

来源：

PHYSICAL REVIEW B | 1996年 / 54卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.54.12207

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

YbInCu4 undergoes a first-order isostructural valence transition near 40 K, whereas YbAgCu4 is a moderately heavy (gamma=250 mJ/mol K-2) mixed-valence compound. We have succeeded in growing single crystals of these compounds, as well as many intermediate alloys, using flux-growth techniques. The evolution from YbInCu4 to YbAgCu4 has been characterized using electrical resistivity, magnetic susceptibility, and x-ray powder diffraction. The data are interpreted in terms of the evolution of the single-impurity Kondo temperature as a function of Ag concentration.

引用

页码：12207 / 12211

页数：5

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