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@ARTICLE{Pavarini:3491,
author = {Pavarini, E. and Koch, E. and Lichtenstein, A. I.},
title = {{M}echanism for {O}rbital {O}rdering in {KC}u{F}3},
journal = {Physical review letters},
volume = {101},
issn = {0031-9007},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-3491},
pages = {266405},
year = {2008},
note = {Record converted from VDB: 12.11.2012},
abstract = {The Mott insulating perovskite KCuF3 is considered the
archetype of an orbitally ordered system. By using the
local-density approximation+dynamical mean-field theory
method, we investigate the mechanism for orbital ordering in
this material. We show that the purely electronic
Kugel-Khomskii superexchange mechanism alone leads to a
remarkably large transition temperature of T-KK similar to
350 K. However, orbital order is experimentally believed to
persist to at least 800 K. Thus, Jahn-Teller distortions are
essential for stabilizing orbital order at such high
temperatures.},
keywords = {J (WoSType)},
cin = {IAS-1 / IFF-1 / JARA-FIT / IAS-3 / IFF-3},
ddc = {550},
cid = {I:(DE-Juel1)IAS-1-20090406 / I:(DE-Juel1)VDB781 /
$I:(DE-82)080009_20140620$ / I:(DE-Juel1)IAS-3-20090406 /
I:(DE-Juel1)VDB783},
pnm = {Grundlagen für zukünftige Informationstechnologien},
pid = {G:(DE-Juel1)FUEK412},
shelfmark = {Physics, Multidisciplinary},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000262247100057},
doi = {10.1103/PhysRevLett.101.266405},
url = {https://juser.fz-juelich.de/record/3491},
}