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@ARTICLE{Lezaic:52029,
author = {Lezaic, M. and Mavropoulos, Ph. and Enkovaara, J. and
Bihlmayer, G. and Blügel, S.},
title = {{T}hermal {C}ollapse of {S}pin {P}olarization in
{H}alf-{M}etallic {F}erromagnets},
journal = {Physical review letters},
volume = {97},
issn = {0031-9007},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-52029},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {We propose two novel approaches to study the temperature
dependence of the magnetization and the spin polarization at
the Fermi level in magnetic compounds, and apply them to
half-metallic ferromagnets. We reveal a new mechanism, where
the hybridization of states forming the half-metallic gap
depends on thermal spin fluctuations and the polarization
can drop abruptly at temperatures much lower than the Curie
point. We verify this for NiMnSb by ab initio calculations.
The thermal properties are studied by mapping ab initio
results to an extended Heisenberg model which includes
longitudinal fluctuations and is solved by a Monte Carlo
method.},
keywords = {J (WoSType)},
cin = {IFF-TH-I / JARA-FIT / JARA-SIM},
ddc = {550},
cid = {I:(DE-Juel1)VDB30 / $I:(DE-82)080009_20140620$ /
I:(DE-Juel1)VDB1045},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Physics, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000239057200048},
doi = {10.1103/PhysRevLett.97.026404},
url = {https://juser.fz-juelich.de/record/52029},
}