Half-metallic ferromagnetism induced by dynamic electron correlations in VAs.
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.
Chioncel
L
L
Institute of Theoretical Physics, Graz University of Technology, Austria.
Mavropoulos
Ph
P
Lezaić
M
M
Blügel
S
S
Arrigoni
E
E
Katsnelson
M I
MI
Lichtenstein
A I
AI