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@ARTICLE{Tusche:57646,
author = {Tusche, C. and Meyerheim, H. L. and Hillebrecht, F. U. and
Kirschner, J.},
title = {{E}vidence for a mixed {C}o{N}i{O} layer at the
{C}o/{N}i{O}(001) interface from surface x-ray diffraction},
journal = {Physical review / B},
volume = {73},
number = {12},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-57646},
pages = {125401},
year = {2006},
note = {Record converted from VDB: 12.11.2012},
abstract = {The clean and cobalt-covered NiO(001) surface was studied
by surface x-ray diffraction. The NiO(001) surface prepared
by annealing in air at 1000 degrees C is characterized by a
strong expansion of the top interlayer spacing (approximate
to $14\%$ relative to the bulk NiO-spacing of 2.085 A) and
an outward relaxation (0.28 A) of the oxygen atoms, which
can be related to a high $(27\%)$ concentration of oxygen
vacancy defects. In addition we find an oxygen-layer (most
likely as part of the OH- anion) on top of the surface Ni
atoms at a distance of 2.33 A. Deposition of 0.8 monolayers
of Co induces a complex surface restructuring involving the
formation of double layer CoO-islands above an oxygen
deficient interfacial oxide layer ([NiCo]O-0.5) in registry
with the underlying NiO single crystal. Our results support
previous spectroscopic studies suggesting the presence of
uncompensated interfacial spins responsible for the exchange
bias.},
keywords = {J (WoSType)},
cin = {IFF-IEE},
ddc = {530},
cid = {I:(DE-Juel1)VDB38},
pnm = {ohne FE},
pid = {G:(DE-Juel1)FUEK307},
shelfmark = {Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000236467400098},
doi = {10.1103/PhysRevB.73.125401},
url = {https://juser.fz-juelich.de/record/57646},
}