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@ARTICLE{Postnikov:34887,
author = {Postnikov, A. V. and Chiuzbaian, S. G. and Neumann, M. and
Blügel, S.},
title = {{E}lectron spectroscopy and density-functional study of
'ferric wheel' molecules},
journal = {Journal of physics and chemistry of solids},
volume = {65},
issn = {0022-3697},
address = {New York, NY [u.a.]},
publisher = {Elsevier},
reportid = {PreJuSER-34887},
pages = {813 - 817},
year = {2004},
note = {Record converted from VDB: 12.11.2012},
abstract = {The Li-centered 'ferric wheel' molecules with six
oxo-bridged iron atoms form molecular crystals. We probed
their electronic structure by X-ray photoelectron and soft
X-ray emission spectroscopy, having calculated in parallel
the electronic structure of a single 'ferric wheel' molecule
from first-principles by tools of the density-functional
theory, using, specifically, the SIESTA method. The Fe local
moments were found to be 4mu(B), irrespective of their
mutual orientation. Neighbouring atoms, primarily oxygen,
exhibit a noticeable magnetic polarization, yielding
effective spin S = 5/2 per iron atom, that can get inverted
as a 'rigid' one in magnetic transitions. Corresponding
energy preferences can be mapped onto the Heisenberg model
with effective exchange parameter J of about -80 K. (C) 2003
Elsevier Ltd. All rights reserved.},
keywords = {J (WoSType)},
cin = {IFF-TH-I},
ddc = {530},
cid = {I:(DE-Juel1)VDB30},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK242},
shelfmark = {Chemistry, Multidisciplinary / Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000189219700025},
doi = {10.1016/j.jpcs.2003.11.025},
url = {https://juser.fz-juelich.de/record/34887},
}