Renormalization of hopping integrals due to Coulomb interactions for the Anderson model
- 15 August 1989
- journal article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 40 (6), 4160-4163
- https://doi.org/10.1103/physrevb.40.4160
Abstract
We study the renormalization of hopping integrals between localized and delocalized levels due to a Coulomb interaction between these two types of levels. We find that the renormalization enhances the effective hopping matrix elements, due to effects of the type that enhance x-ray spectra at the threshold. This effect tends to make the hopping integrals appear larger for thermodynamic properties than for spectroscopic properties.Keywords
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