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@ARTICLE{Picozzi:52566,
author = {Picozzi, S. and Yamauchi, K. and Bihlmayer, G. and Blügel,
S.},
title = {{F}irst-principles stabilization of an unconventional
collinear magnetic ordering in distorted manganites},
journal = {Physical review / B},
volume = {74},
number = {9},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-52566},
pages = {094402},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {First-principles calculations have been performed for
different collinear magnetic orderings in orthorhombic
manganites, such as HoMnO3, TbMnO3, and YMnO3, showing large
GdFeO3-like distortions. Our results suggest that the AFM-E
type ordering, experimentally observed in HoMnO3 and
recently proposed from model Hamiltonian studies, is indeed
the magnetic ground state. Its stability is strongly
connected with octahedral distortions and points to the
relevance of structural more than chemical effects. The
calculated exchange constants, extracted from a Heisenberg
model used to fit the first-principles total energies, show
that the ferromagnetic in-plane nearest-neighbor coupling is
reduced compared to less-distorted manganites, such as
LaMnO3. In parallel, the antiferromagnetic
next-nearest-neighbor coupling along planar Mn-O-O-Mn paths
in highly distorted manganites plays a relevant role in the
stabilization of the AFM-E spin configuration. In agreement
with experiments, the density of states shows that this
phase is insulating with an indirect band gap of similar to
0.5 eV.},
keywords = {J (WoSType)},
cin = {IFF-TH-I / JARA-FIT / JARA-SIM},
ddc = {530},
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, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000240871700029},
doi = {10.1103/PhysRevB.74.094402},
url = {https://juser.fz-juelich.de/record/52566},
}