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Electronic structure and magnetic anisotropy of CrO2

A. Toropova, G. Kotliar, S. Y. Savrasov, V. S. Oudovenko

cond-mat.str-elarXiv:cond-mat/0409554

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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