Phase diagram for the Anderson lattice model

被引：14

作者：

Bernhard, BH ^{[1
]}

Lacroix, C

Iglesias, JR

Coqblin, B

机构：

[1] CNRS, Lab Magnitisme Louis Neel, Grenoble, France

[2] Univ Fed Rio Grande Sul, Inst Fis, Porto Alegre, RS, Brazil

[3] Univ Paris Sud, Phys Solides Lab, Orsay, France

来源：

PHYSICAL REVIEW B | 2000年 / 61卷 / 01期

关键词：

D O I：

10.1103/PhysRevB.61.441

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the competition between the Kondo effect and the Ruderman-Kittel-Kasuya-Yosida interaction in the framework of the Anderson lattice model with an extra intersite exchange term. By using an approximation based on an atomic expansion, we obtain, for the symmetric half-filled case, a phase diagram analog to the Doniach diagram for the Kondo lattice. The qualitative and quantitative progress in the description of experimental results for the cerium Kondo compounds with respect to previous approaches is discussed. We also calculate the specific heat which exhibits a two-peak structure as a function of temperature.

引用

收藏

页码：441 / 446

页数：6

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