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@ARTICLE{Dederichs:49518,
author = {Dederichs, P. H. and Galanakis, I. and Mavropoulos, Ph.},
title = {{H}alf-metallic {A}lloys: {E}lectronic {S}tructure,
{M}agnetism and {S}pin {P}olarisation},
journal = {Journal of electron microscopy},
volume = {54},
issn = {0022-0744},
address = {Oxford [u.a.]},
publisher = {Oxford Univ. Press},
reportid = {PreJuSER-49518},
pages = {i53 - i56},
year = {2005},
note = {Record converted from VDB: 12.11.2012},
abstract = {Using the state-of-the-art screened Korringa-Kohn-Rostoker
Green function method we study the electronic and magnetic
properties of NiMnSb and similar Heusler alloys. We show
that all these compounds are half-metals, e.g. the
minority-spin band is semiconducting and the Fermi level
falls within this gap resulting in $100\%$ spin polarization
at the Fermi level. The total spin moment M(t) shows the
so-called Slater-Pauling behaviour and scales with the total
valence charge Z(t) following the rule M(t) = Z(t) - 18 for
half and M(t) = Z(t) - 24 for full Heusler alloys. These
rules are connected to the origin of the gap. Finally we
show that the inclusion of the spin-orbit interaction in our
calculations kills the half-metallic gap but the
spin-polarization at the Fermi level can be still very high,
approximately $99\%$ for NiMnSb, but much lower for a
half-metallic compound like zinc-blende MnBi $(77\%).$},
keywords = {J (WoSType)},
cin = {IFF-TH-I / IFF-TH-III},
ddc = {570},
cid = {I:(DE-Juel1)VDB30 / I:(DE-Juel1)VDB32},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK242},
shelfmark = {Microscopy},
typ = {PUB:(DE-HGF)16},
pubmed = {pmid:16157642},
UT = {WOS:000232005200011},
doi = {10.1093/jmicro/54.suppl_1.i53},
url = {https://juser.fz-juelich.de/record/49518},
}