Coulomb Correlations and Magnetic Anisotropy in ordered $L{1}_0$ CoPt and FePt alloys

Abstract

We present results of the magneto-crystalline anisotropy energy (MAE) calculations for chemically ordered $L{1}_0$ CoPt and FePt alloys taking into account the effects of strong electronic correlations and spin-orbit coupling. The local spin density + Hubbard U approximation (LSDA+U) is shown to provide a consistent picture of the magnetic ground state properties when intra-atomic Coulomb correlations are included for both 3$d$ and 5$d$ elements. Our results demonstrate significant and complex contribution of correlation effects to large MAE of these material.

arXiv commentrevised version; 4 pages, 2 figures

References in corpus (3)

• Correlated metals and the LDA+U method
• Magnetism, Spin-Orbit Coupling, and Superconducting Pairing in UGe${}_2$
• Importance of Correlation Effects on Magnetic Anisotropy in Fe and Ni

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