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

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概要

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• We study an extended periodic Anderson model with the Coulomb interaction U_{c\aku f} 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 U_{c\aku f}, and for a sufficiently large U_{c\aku f}, 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 U_{c\aku f}. In addition, we find that a large mass enhancement also occurs in the intermediate-valence regime by the effect of U_{c\aku f}.

• 2011-11-15

著者

• Kubo Katsunori

  Advanced Science Research Center Japan Atomic Energy Agency

• Kubo Katsunori

  Advanced Science Research Center, Japan Atomic Energy Agency, Tokai, Ibaraki 319-1195, Japan

関連論文

• Orbital-Controlled Superconductivity in f-Electron Systems(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Fulde-Ferrell-Larkin-Ovchinnikov State in the Absence of a Magnetic Field(Condensed matter: electronic structure and electrical, magnetic, and optical properties)
• Gutzwiller Method for an Extended Periodic Anderson Model with the c--f Coulomb Interaction
• Magnetic Susceptibility of Multiorbital Systems(Condensed Matter : Electronic Structure, Electrical, Magnetic and Optical Properties)

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