Half-metallic ferromagnetism induced by dynamic electron correlations in VAs
L. Chioncel, Ph. Mavropoulos, M. Ležaić, S. Blügel, E. Arrigoni, M. I. Katsnelson, A. I. Lichtenstein
Abstract
The electronic structure of the VAs compound in the zinc-blende structure is investigated using a combined density-functional and dynamical mean-field theory approach. Contrary to predictions of a ferromagnetic semiconducting ground state obtained by density-functional calculations, dynamical correlations induce a closing of the gap and produce a half-metallic ferromagnetic state. These results emphasize the importance of dynamic correlations in materials suitable for spintronics.
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