Self-consistent perturbation treatment of electron correlation effects in transition metals
- 1 May 1988
- journal article
- Published by IOP Publishing in Journal of Physics F: Metal Physics
- Vol. 18 (5) , L87-L93
- https://doi.org/10.1088/0305-4608/18/5/004
Abstract
Electron correlation effects in transition metals with model rectangular and semi-elliptic local density of states are studied within the Hubbard model by the self-consistent second-order perturbation theory in U/W (where U is the Coulomb integral and W the bandwidth). It is shown that a satellite structure on the one-particle spectrum predicted by the nonself-consistent second-order perturbation theory disappears when the problem is treated in a self-consistent way.Keywords
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