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.
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页数：4
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