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arXiv · 1108.3132

Gutzwiller Method for an Extended Periodic Anderson Model with the c-f Coulomb Interaction

Katsunori Kubo
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Abstract

We study an extended periodic Anderson model with the Coulomb interaction Ucf between conduction and f electrons by the Gutzwiller method. The crossovers between the Kondo, intermediate-valence, and almost empty f-electron regimes become sharper with Ucf, and for a sufficiently large Ucf, become first-order phase transitions. In the Kondo regime, a large enhancement in the effective mass occurs as in the ordinary periodic Anderson model without Ucf. In addition, we find that a large mass enhancement also occurs in the intermediate-valence regime by the effect of Ucf.

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Katsunori Kubo. 2011-10-24. Gutzwiller Method for an Extended Periodic Anderson Model with the c-f Coulomb Interaction. https://doi.org/10.1143/jpsj.80.114711

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