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@ARTICLE{DeSantis:56650,
author = {De Santis, M. and Gauthier, Y. and Tolentino, H. C. N. and
Bihlmayer, G. and Blügel, S. and Langlais, V.},
title = {{S}tructure and magnetic properties of
{M}n/{P}t(110)-(1x2): {A} joint x-ray diffraction and
theoretical study},
journal = {Physical review / B},
volume = {75},
number = {20},
issn = {1098-0121},
address = {College Park, Md.},
publisher = {APS},
reportid = {PreJuSER-56650},
pages = {205432},
year = {2007},
note = {Record converted from VDB: 12.11.2012},
abstract = {The growth of a Mn submonolayer on Pt(110)-(1x2) was
studied by surface x-ray diffraction. At room temperature,
Mn fills in the empty rows of the clean substrate's missing
row structure. At a coverage of 0.5 ML (monolayer), a (1x2)
surface alloy is formed, with alternating Pt and Mn dense
rows. Upon annealing (or depositing at a substrate
temperature of about 570 K), another surface alloy forms
with a (2x1) symmetry. It exhibits mixed dense rows where Pt
and Mn sites alternate, as in bulk Pt3Mn. The top layer is
corrugated for both the (1x2) and (2x1) surfaces, with Mn
lying 0.19 +/- 0.03 and 0.16 +/- 0.02 A above the Pt site,
respectively. A Pt3Mn-like slab forms when annealing a
3-ML-thick Mn film. The observed symmetries are at variance
with the NiMn and CuMn surfaces where c(2x2) arrangements
were found. Theoretical calculations were performed for
(1x2), c(2x2), and (2x1) PtMn two-dimensional (2D) alloys on
Pt(110). Among them, the latter was found to be the ground
state. Both the (1x2) and (2x1) surface alloys form
antiferromagnetic (AF) Mn chains running in the [1 (1) over
bar0] and [001] directions, respectively. The ordering
within the surface layer switches to ferromagnetic (F) for a
5-ML-thick Pt3Mn(110) film albeit with a surface structure
quite identical to the (2x1) 2D case. The magnetic moment
per Mn atom at the surface is close to 4 mu(B), in all
cases, among the largest values ever found in similar
metal-Mn surface alloys: it is directly related to the
surface corrugation and to the Mn volume as already observed
for other Mn-based surface alloys. The magnetic order, F or
AF, is strongly influenced by the local chemical environment
of the Mn sites.},
keywords = {J (WoSType)},
cin = {IFF-1 / JARA-FIT / JARA-SIM},
ddc = {530},
cid = {I:(DE-Juel1)VDB781 / $I:(DE-82)080009_20140620$ /
I:(DE-Juel1)VDB1045},
pnm = {Kondensierte Materie},
pid = {G:(DE-Juel1)FUEK414},
shelfmark = {Physics, Condensed Matter},
typ = {PUB:(DE-HGF)16},
UT = {WOS:000246890900133},
doi = {10.1103/PhysRevB.75.205432},
url = {https://juser.fz-juelich.de/record/56650},
}