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Showing 1 to 3 of 3 for “"periodic Anderson model"”.
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Valence transition and superconductivity in the extended periodic Anderson model
In this thesis, an extended periodic Anderson model with an additional local Coulomb repulsion U f c between localized f electrons and conduction electrons is investigated by use of the projector-based renormalization method (PRM). First, it is shown that the model in one dimension shows a valence …
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Strong electronic correlations in low-dimensional systems
… perspectives: the construction of appropriate models and the evaluation of dynamical lattice response functions. At first we derive realistic material-specific Hubbard model parameters for organic crystals. We extract the simplest parameters, the hopping integrals t, from the …
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Flussgleichungen für das Anderson-Gitter zur Beschreibung von Schwer-Fermion-Systemen
… für eine theoretische Beschreibung bildet das Anderson-Gitter, welches das Wechselspiel freier Leitungselektronen und stark korrelierter Elektronen aus lokalisierten f-Orbitalen charakterisiert. Als Zugang zu diesem Modell wird die von Wegner vorgeschlagene Flussgleichungsmethode verwendet, ein …