| Autor: |
Yu.A.Izyumov, N.I.Chaschin, D.S.Alexeev |
| Jazyk: |
angličtina |
| Rok vydání: |
2005 |
| Předmět: |
|
| Zdroj: |
Condensed Matter Physics, Vol 8, Iss 4, Pp 801-812 (2005) |
| Druh dokumentu: |
article |
| ISSN: |
1607-324X |
| DOI: |
10.5488/CMP.8.4.801 |
| Popis: |
A Kadanoff-Baym-type generating functional approach, earlier developed by the authors to strongly correlated systems, is applied to the sd-model with strong sd-coupling. Formalism of the Hubbard X-operators was used, and equation for electron Green's function was derived with functional derivatives over external fluctuating fields. Iterations in this equation generate a perturbation theory near the atomic limit. Hartree-Fock type approximation is developed within the framework of this theory, and the problem of a metal-insulator phase transition in sd-model is discussed. |
| Databáze: |
Directory of Open Access Journals |
| Externí odkaz: |
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