TY  - JOUR
AU  - Kielgast, Fridtjof
AU  - Baev, Ivan
AU  - Beeck, Torben
AU  - Pressacco, Federico
AU  - Martins, Michael
TI  - Revealing noncollinear magnetic ordering at the atomic scale via XMCD
JO  - Scientific reports
VL  - 11
IS  - 1
SN  - 2045-2322
CY  - [London]
PB  - Macmillan Publishers Limited, part of Springer Nature
M1  - PUBDB-2021-00849
SP  - 2996
PY  - 2021
AB  - Mass-selected V and Fe monomers, as well as the heterodimer Fe1V1, were deposited on a Cu(001) surface. Their electronic and magnetic properties were investigated via X-ray absorption (XAS) and X-ray magnetic circular dichroism (XMCD) spectroscopy. Anisotropies in the magnetic moments of the deposited species could be examined by means of angle resolving XMCD, i.e. changing the X-ray angle of incidence. A weak adatom-substrate-coupling was found for both elements and, using group theoretical arguments, the ground state symmetries of the adatoms were determined. For the dimer, a switching from antiparallel to parallel orientation of the respective magnetic moments was observed. We show that this is due to the existence of a noncollinear spin-flop phase in the deposited dimers, which could be observed for the first time in such a small system. Making use of the two magnetic sublattices model, we were able to find the relative orientations for the dimer magnetic moments for different incidence angles.
LB  - PUB:(DE-HGF)16
C6  - pmid:33542346
UR  - <Go to ISI:>//WOS:000618048400013
DO  - DOI:10.1038/s41598-021-82518-4
UR  - https://bib-pubdb1.desy.de/record/454942
ER  -