%0 Journal Article %J PHYSICAL REVIEW LETTERS %D 2006 %T Half-metallic ferromagnetism induced by dynamic electron correlations in VAs %A Chioncel, L. %A Mavropoulos, Ph. %A Lezaic, M. %A S. Blügel %A Arrigoni, E. %A Katsnelson, M. I. %A Lichtenstein, A. I. %X 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. %B PHYSICAL REVIEW LETTERS %V 96 %P 197203 %8 MAY 19 %G eng %R 10.1103/PhysRevLett.96.197203