TY  - JOUR
AU  - Galanakis, I.
AU  - Sasioglu, E.
TI  - Stability of ferromagnetism against doping in half-metallic alloys
JO  - Journal of applied physics
VL  - 109
SN  - 0021-8979
CY  - Melville, NY
PB  - American Institute of Physics
M1  - PreJuSER-17871
SP  - 113912
PY  - 2011
N1  - Record converted from VDB: 12.11.2012
AB  - 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]
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000292214700098
DO  - DOI:10.1063/1.3592168
UR  - https://juser.fz-juelich.de/record/17871
ER  -