Study of Some Factors Affecting Thermodynamic Properties of the Insulating Phase of the Periodic Anderson Lattice Model
| Autor: | Jiang Huaming, Hu Liang-bin, Sun Jin-Zuo, Yang Fu-min |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
Physics
Physics and Astronomy (miscellaneous) Condensed matter physics Primitive cell Electron Metal Particle in a one-dimensional lattice Phase (matter) visual_art visual_art.visual_art_medium Condensed Matter::Strongly Correlated Electrons Ground state Degeneracy (mathematics) Lattice model (physics) |
| Zdroj: | Communications in Theoretical Physics. 28:17-22 |
| ISSN: | 0253-6102 |
| Popis: | Within the framework of slave-boson mean-field theory, we study the thermodynamic properties of the periodic Anderson lattice model with half-filled conduction band and one 4f electron at each primitive cell and the degeneracy . It is found that after taking into account the direct nearest-neighbor hopping, such a periodic Anderson lattice model can exhibit both an insulating ground state and a heavy-fermion metal ground state depending on the value of the bare energy level , the hybridization matrix element , and the direct hopping strength . This is unlike the case neglecting the direct hopping, in which such a periodic Anderson lattice model will predict an insulating ground state only. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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