3-Body Scattering (3BS) theory of on-site correlation in narrow band materials

Details 3-Body Scattering (3BS) theory of on-site correlation in narrow band materials 3-Body Scattering (3BS) theory of on-site correlation in narrow band materials

1997-12-15

arxiv.org/abs/cond-mat/9712180v1

Newsletter n. 24, December 1997, "Highlight of the Month", PSIK Network

Physics

Condensed Matter

Strongly Correlated Electrons

LaTeX 2.09, 12 pages, 4 LaTeX figures

Scientific paper

We present the results of a recently developed approach where the interplay between the itinerant and localized character of electrons in narrow band materials is described by adding on-site correlation effects to a first principle band calculation: the single particle band states are treated as mean field solutions of a multi-orbital Hubbard Hamiltonian and the many-body term associated to localized e-e interaction is described in a configuration-interaction scheme. The method allows to calculate hole and electron spectral functions which can be directly compared with spectroscopical results.

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