Coexistence of ferromagnetism and Kondo effect in uranium compounds

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dc.creatorPerkins, N. B.
dc.creatorIglesias, J. R.
dc.creatorNunez-Regueiro, M. D.
dc.creatorCoqblin, B.
dc.date2006-09-08
dc.date.accessioned2026-07-07T07:23:28Z
dc.date.available2026-07-07T07:23:28Z
dc.descriptionCoexistence between ferromagnetic order and Kondo behavior has been observed in some uranium compounds. The underscreened Kondo lattice model can provide a possible description of this coexistence. Here we present a model of a lattice of S=1 spins coupled to the conduction electrons through an intra-site exchange interaction $J_{K}$ and an inter-site ferromagnetic exchange $f-f$ interaction $J_{H}$. Finite temperature results show that the Kondo temperature is larger than the Curie ordering temperature, $T_{C}$, providing a possible scenario for the coexistence of Kondo effect and magnetic order. Also, the Kondo behavior disappears abruptly for low values of $J_{K}$ and smoothly when changing the band occupation. These results are in qualitative agreement with the experimental situation for the above mentioned uranium compounds.
dc.description4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0609199
dc.identifierhttp://arxiv.org/abs/cond-mat/0609199
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/115990
dc.subjectStrongly Correlated Electrons
dc.titleCoexistence of ferromagnetism and Kondo effect in uranium compounds
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