Valence Fluctuations in the Extended Periodic Anderson Model at Finite Temperatures

Valence Fluctuations in the Extended Periodic Anderson Model at Finite Temperatures

We study valence fluctuation at finite temperatures in the periodic Anderson model with the Coulomb interaction between \(f\) and conduction electons, combining dynamical mean-field theory with the non-crossing approximation. It is found that a large Coulomb repulsion induces a first-order valence t...

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Veröffentlicht in:arXiv.org 2013-10
Hauptverfasser: Kojima, Yuhei, Koga, Akihisa
Format: Artikel
Sprache:eng
Schlagworte:
Mean field theory
Phase diagrams
Phase transitions
Physics - Strongly Correlated Electrons
Variation
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Zusammenfassung:We study valence fluctuation at finite temperatures in the periodic Anderson model with the Coulomb interaction between \(f\) and conduction electons, combining dynamical mean-field theory with the non-crossing approximation. It is found that a large Coulomb repulsion induces a first-order valence transition. The finite temperature phase diagram is determined.
ISSN:2331-8422
DOI:10.48550/arxiv.1310.0124