TY  - JOUR
AU  - Sasioglu, E.
TI  - Nonzero macroscopic magnetization in half-metallic antiferromagnets at finite temperatures
JO  - Physical review / B
VL  - 79
IS  - 10
SN  - 1098-0121
CY  - College Park, Md.
PB  - APS
M1  - PreJuSER-6293
SP  - 100406
PY  - 2009
N1  - Record converted from VDB: 12.11.2012
AB  - Combining density-functional theory calculations with many-body Green's-function technique, we reveal that the macroscopic magnetization in half-metallic antiferromagnets does not vanish at finite temperature as for the T=0 limit. This anomalous behavior stems from the inequivalent magnetic sublattices which lead to different intrasublattice exchange interactions. As a consequence, the spin fluctuations suppress the magnetic order of the sublattices in a different way leading to a ferrimagnetic state at finite temperatures. Computational results are presented for the half-metallic antiferromagnetic CrMnZ (Z=P,As,Sb) semi-Heusler compounds.
KW  - J (WoSType)
LB  - PUB:(DE-HGF)16
UR  - <Go to ISI:>//WOS:000264768600014
DO  - DOI:10.1103/PhysRevB.79.100406
UR  - https://juser.fz-juelich.de/record/6293
ER  -