Half-metallic ferromagnetism induced by dynamic electron correlations in VAs

Details Half-metallic ferromagnetism induced by dynamic electron correlations in VAs Half-metallic ferromagnetism induced by dynamic electron correlations in VAs

2006-02-05

arxiv.org/abs/cond-mat/0602112v2

Physics

Condensed Matter

Strongly Correlated Electrons

Published in Phys. Rev. Lett. 96, 197203 (2006)

Scientific paper

10.1103/PhysRevLett.96.197203

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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