Magnetism of correlated systems: beyond LDA
Abstract
A novel approach to electronic correlations in magnetic crystals which takes into account a dynamical many-body effects is present. In order to to find a frequency dependence of the electron self energy, an effective quantum-impurity many-particle problem need to be solved within the dynamical mean-field theory. The numerically exact QMC-scheme and the spin-polarized fluctuation exchange approximation are used for the self-consistent solution of this single-site many-particle problem. The calculations of effective exchange interaction parameters based on the realistic electronic structure of correlated magnetic crystals have been discussed.
Cite
@article{arxiv.cond-mat/0103389,
title = {Magnetism of correlated systems: beyond LDA},
author = {A. I. Lichtenstein and M. I. Katsnelson},
journal= {arXiv preprint arXiv:cond-mat/0103389},
year = {2007}
}
Comments
19 pages, 5 figures; to be published in the Proceedings of the Workshop on "Ground-State and Finite-Temperature Bandferromagnetism", Berlin/Wandlitz, 4-6 October 2000 [Lecture Notes in Physics, Springer Verlag]