Screening of magnetic moments in PuAm alloy : LDA+DMFT study

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dc.creatorShim, J. H.
dc.creatorHaule, K.
dc.creatorSavrasov, S.
dc.creatorKotliar, G.
dc.date2008-06-02
dc.date.accessioned2026-07-07T10:05:09Z
dc.date.available2026-07-07T10:05:09Z
dc.descriptionThe puzzling absence of Pu magnetic moments in a PuAm environment is explored using the self-consistent Dynamical Mean Field Theory (DMFT) calculations in combination with the Local Density Approximation. We argue that delta-Pu -Am alloys provide an ideal test bed for investigating the screening of moments from the single impurity limit to the dense limit. Several important effects can be studied: volume expansion, shift of the bare Pu on-site f energy level, and the reduction of the hybridization cloud resulting from the collective character of the Kondo effect in the Anderson lattice. These effects compensate each other and result in a coherence scale, which is independent of alloy composition, and is around 800K. We emphasize the role of the DMFT self-consistency condition, and multiplet splittings in Pu and Am atoms, in order to capture the correct value of the coherence scale in the alloy.
dc.description4.4 pages, 4 figures
dc.identifierhttps://arxiv.org/abs/0806.0313
dc.identifierhttp://arxiv.org/abs/0806.0313
dc.identifierPhys. Rev. Lett., 101, 126403 (2008)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/169924
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleScreening of magnetic moments in PuAm alloy : LDA+DMFT study
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