Motivated by a collection of experimental results indicating the strongly correlated nature of the ferromagnetic metallic state of CrO2, we present results based on a combination of the actual bandstructure [3] with dynamical mean-field theory (DMFT) for the multi-orbital case. In striking contrast with LSDA(+U) [3] and model many-body approaches [14], much better semiquantitative agreement with (i) recent photoemission results, (ii) domain of applicability of the half-metal concept, and (iii) thermodynamic and dc transport data, is obtained within a single picture. Our approach has broad applications for the detailed first principles investigation of other transition metal oxide-based half-metallic ferromagnets.
@article{arxiv.cond-mat/0209132,
title = {Orbital Kondo Effect in $CrO_{2}$: A LSDA+DMFT Study},
author = {L. Craco and M. S. Laad and E. Müller-Hartmann},
journal= {arXiv preprint arXiv:cond-mat/0209132},
year = {2007}
}