Ferromagnetism and Kondo insulator behavior in the disordered periodic Anderson model

被引：10

作者：

Yu, Unjong ^{[1
]}

Byczuk, Krzysztof ^{[1
,2
]}

Vollhardt, Dieter ^{[1
]}

机构：

[1] Univ Augsburg, Inst Phys, Ctr Elect Correlat & Magnetism, D-86135 Augsburg, Germany

[2] Univ Warsaw, Inst Theoret Phys, PL-00681 Warsaw, Poland

来源：

PHYSICAL REVIEW LETTERS | 2008年 / 100卷 / 24期

关键词：

D O I：

10.1103/PhysRevLett.100.246401

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

The effect of binary alloy disorder on the ferromagnetic phases of f-electron materials is studied within the periodic Anderson model. We find that disorder in the conduction band can drastically enhance the Curie temperature T-c due to an increase of the local f moment. The effect may be explained qualitatively and even quantitatively by a simple theoretical ansatz. The emergence of an alloy Kondo insulator at noninteger filling is also pointed out.

引用

页数：4

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