%0 Journal Article
%A Galanakis, I.
%A Sasioglu, E.
%T Stability of ferromagnetism against doping in half-metallic alloys
%J Journal of applied physics
%V 109
%@ 0021-8979
%C Melville, NY
%I American Institute of Physics
%M PreJuSER-17871
%P 113912
%D 2011
%Z Record converted from VDB: 12.11.2012
%X We use a rigid band model to simulate doping in half-metallic NiMnSb and CoMnSb semi-Heusler alloys. Using first-principles calculations we calculate the intrasublattice exchange constants and the Curie temperature for these alloys as a function of the shift of the Fermi level and compare them also with the case of half-metallic CrAs and CrSe zinc-blende alloys. We show for all four compounds that the interactions between Cr-Cr(Mn-Mn) nearest neighbors are sufficient to explain the behavior of the Curie temperature. The interplay between the ferromagnetic RKKY-like and the antiferromagnetic superexchange interactions depends strongly on the details of the density of states around the minority-spin gap and thus it is found to be alloy-dependent. (C) 2011 American Institute of Physics. [doi:10.1063/1.3592168]
%K J (WoSType)
%F PUB:(DE-HGF)16
%9 Journal Article
%U <Go to ISI:>//WOS:000292214700098
%R 10.1063/1.3592168
%U https://juser.fz-juelich.de/record/17871