Theory of valence transitions in Ytterbium and Europium intermetallics

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dc.creatorZlatic, V.
dc.creatorFreericks, J. K.
dc.date2001-09-17
dc.date.accessioned2026-07-07T02:42:44Z
dc.date.available2026-07-07T02:42:44Z
dc.descriptionThe exact solution of the multi-component Falicov-Kimball model in infinite-dimensions is presented and used to discuss a new fixed point of valence fluctuating intermetallics with Yb and Eu ions. In these compounds, temperature, external magnetic field, pressure, or chemical pressure induce a transition between a metallic state with the f-ions in a mixed-valent (non-magnetic) configuration and a semi-metallic state with the f-ions in an integral-valence (paramagnetic) configuration. The zero-field transition occurs at the temperature Tv, while the zero-temperature transition sets in at the critical field Hc. We present the thermodynamic and dynamic properties of the model for an arbitrary concentration of d- and f-electrons. For large U, we find a MI transition, triggered by the temperature or field-induced change in the f-occupancy.
dc.description5 pages, 5 figures
dc.identifierhttps://arxiv.org/abs/cond-mat/0109288
dc.identifierhttp://arxiv.org/abs/cond-mat/0109288
dc.identifierActa Physica Polonica B 32, 3253--3266 (2001)
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/18260
dc.subjectStrongly Correlated Electrons
dc.titleTheory of valence transitions in Ytterbium and Europium intermetallics
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