Dynamical electron correlations in metals: TB-LMTO and multiband Hubbard Hamiltonian
Abstract
We study electronic properties of solids with correlated d electrons which could be described by a multiband Hubbard Hamiltonian in the weak-interaction case, . The one-electron part of the many-body Hamiltonian is described by a tight-binding LMTO method. The many-body part is treated by non-selfconsistent FLEX-type approximations with adjusted chemical potential not to change the LMTO band filling. The calculated DOS gets narrower but is only little influenced by electron correlations at the Fermi energy. A precursor of a satellite band in the paramagnetic bcc Ni is found at about 6 eV below the Fermi level in agreement with experiment.
Cite
@article{arxiv.cond-mat/9810181,
title = {Dynamical electron correlations in metals: TB-LMTO and multiband Hubbard Hamiltonian},
author = {V. Drchal and V. Janis and J. Kudrnovsky},
journal= {arXiv preprint arXiv:cond-mat/9810181},
year = {2007}
}
Comments
13 pages, 6 PS figures; International Workshop on Electron Correlations and Materials Properties, Crete, Greece, June 28 - July 3, 1998