Gutzwiller Method for an Extended Periodic Anderson Model with the c-f Coulomb Interaction
arXiv:1108.3132 · doi:10.1143/JPSJ.80.114711
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.
9 pages, 7 figures
References in corpus (5)
- Signatures of valence fluctuations in CeCu2Si2 under high pressure
- Strong valence fluctuation in the quantum critical heavy fermion superconductor beta-YbAlB4: A hard x-ray photoemission study
- Superconductivity emerging near quantum critical point of valence transition
- Thermodynamic Relations in Correlated Systems
- Mass Enhancement in an Intermediate-Valent Regime of Heavy-Fermion Systems
Cited by in corpus (10)
- Unconventional Quantum Criticality due to Critical Valence Transition
- Optical study of archetypical valence-fluctuating Eu-systems
- Ferromagnetism and Fermi-surface transition in the periodic Anderson model: Second-order phase transition without symmetry breaking
- Ubiquity of Unconventional Phenomena Associated with Critical Valence Fluctuations in Heavy Fermion Metals
- Hybridization and Correlation between f- and d-orbital electrons in a valence fluctuating compound EuNi2P2
- Valence Fluctuations in the Extended Anderson Lattice Model with Quasiperiodicity
- Quantum criticality and first-order transitions in the extended periodic Anderson model
- Interorbital interaction in the one-dimensional periodic Anderson model: A density-matrix renormalization-group study
- DMFT Study for Valence Fluctuations in the Extended Periodic Anderson Model
- Momentum distribution functions in a one-dimensional extended periodic Anderson model