Electronic structure and magnetic anisotropy of CrO2
A. Toropova, G. Kotliar, S. Y. Savrasov, V. S. Oudovenko
Abstract
The problem of importance of strong correlations for the electronic structure, transport and magnetic properties of half--metallic ferromagnetic CrO2 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.
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