From cluster to solid - the variational cluster approximation applied to NiO
Strongly Correlated Electrons
2009-11-13 v1
Abstract
The variational cluster approximation is applied to the calculation of the single particle spectral function of NiO. Trial self energies and the numerical value of the Luttinger-Ward functional are obtained by exact diagonalization of NiO6-clusters and the single particle parameters of the clusters serve as variational parameters to obtain a stationary point of the grand potential of the lattice system. Good agreement with experiment is obtained.
Keywords
Cite
@article{arxiv.0707.3523,
title = {From cluster to solid - the variational cluster approximation applied to NiO},
author = {R. Eder},
journal= {arXiv preprint arXiv:0707.3523},
year = {2009}
}
Comments
Revtex, 4 pages, 2 eps-figures