Metal-non-metal transition and specific heat of Kondo insulators
The metal-non-metal transition in Kondo insulators of the type (Ce1-xLax)3Bi4Pt3 is studied as a function of the La (Kondo hole) concentration x. We explore the transition under variation of the applied magnetic field, the pressure, and the temperature. The many-body effects are treated by diagonali...
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| Otros Autores: | , |
| Formato: | Acta de conferencia Capítulo de libro |
| Lenguaje: | Inglés |
| Publicado: |
IOP
2000
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| Acceso en línea: | Registro en Scopus DOI Handle Registro en la Biblioteca Digital |
| Aporte de: | Registro referencial: Solicitar el recurso aquí |
| Sumario: | The metal-non-metal transition in Kondo insulators of the type (Ce1-xLax)3Bi4Pt3 is studied as a function of the La (Kondo hole) concentration x. We explore the transition under variation of the applied magnetic field, the pressure, and the temperature. The many-body effects are treated by diagonalizing the site Hamiltonian and embedding this solution into the lattice, using the chain approximation. The alloy states at the Fermi energy are obtained using a real-space renormalization technique. The metal-insulator transition produced by the incorporation of La impurities is explained by the appearance of a delocalized level inside the conduction band rather than by the creation of an impurity band at the gap. |
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| ISSN: | 09538984 |
| DOI: | 10.1088/0953-8984/12/48/306 |