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arXiv · 0801.3934

Ferromagnetism and Kondo Insulator Behavior in the Disordered Periodic Anderson Model

Unjong Yu·Krzysztof Byczuk·Dieter Vollhardt
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Abstract

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 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 non-integer filling is also pointed out.

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Unjong Yu, Krzysztof Byczuk, Dieter Vollhardt. 2008-01-25. Ferromagnetism and Kondo Insulator Behavior in the Disordered Periodic Anderson Model. https://doi.org/10.1103/physrevlett.100.246401

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