Antiferromagnetism and spin glass in a Kondo lattice

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:272

Article; Proceedings Paper

Magalhaes, SG ; Schmidt, AA ; Zimmer, FM ; Theumann, A ; Coqblin, B

关键词: ising problem;    spin glass;    Kondo lattice;   

DOI  :  10.1016/j.jmmm.2003.12.1152

来源: Elsevier

【 摘 要 】

We study here the competition among the spin glass (SG), antiferromagnetism (AF) and the Kondo effect in a model which consists of two Kondo sublattices with both a Kondo coupling J(K) and a random interaction that couples the localized spins of different sublattices with antiferromagnetic mean J(0) and standard deviation J. The obtained phase diagram shows the sequence of phases SG, AF and a Kondo state for increasing Kondo coupling J(K) in qualitative agreement with the experimental data of Ce2Au1-xCoxSi3 alloys. (C) 2004 Elsevier B.V. All rights reserved.

【 授权许可】

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