Electronic structure and magnetic anisotropy of CrO_2
arXiv:cond-mat/0409554 · doi:10.1103/PhysRevB.71.172403
Abstract
The problem of importance of strong correlations for the electronic structure, transport and magnetic properties of half--metallic ferromagnetic CrO_2 is addressed by performing density functional electronic structure calculations in the local spin density approximation (LSDA) as well as using the LSDA+U method. It is shown that the corresponding low--temperature experimental data are best fitted without accounting for the Hubbard U corrections. We conclude that the ordered phase of CrO$_2 is weakly correlated.
5 pages, 7 EPS figures, in RevTex format