Abstract
The problem of magnetic ordering in Kondo lattices is discussed. Criteria of ferro- and antiferromagnetism in the mean-field approximation for thes-f exchange model are obtained. In the case of a constant bare DOS, the saturated Kondo ferromagnetic solution is energetically stable at small intersite interactionsJ. The role of spin-fluctuation corrections at lowT<T K in the building up the low-energy scale and the ground state magnetization is considered. Renormalization of spin-fluctuation frequencies atT>T K is calculated. A possible picture of the formation of magnetism is presented starting from the high-T limit.
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Irkhin, V.Y., Katsnelson, M.I. Kondo effect, spin dynamics and magnetism in anomalous rare earth and actinide compounds. Z. Physik B - Condensed Matter 82, 77–85 (1991). https://doi.org/10.1007/BF01313989
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DOI: https://doi.org/10.1007/BF01313989