Dresden 2017 – scientific programme
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O: Fachverband Oberflächenphysik
O 52: Nanostructures at Surfaces: Dots, Particles, Clusters
O 52.9: Poster
Tuesday, March 21, 2017, 18:30–20:30, P1C
Noncollinear spin arrangement in size-selected FeV clusters on Cu(100) — •Fridtjof Kielgast1, Ivan Baev1, Friederike Albrecht1, Christina Ossig1, Michael Martins1, and Wilfried Wurth1,2 — 1Physics Department, University of Hamburg — 2DESY Photon Science, Hamburg
Deposited clusters constitute interesting model systems for fundamental as well as applied research, as their electronic and magnetic properties tend to change nonlinearly with cluster size and composition. Here, we present investigations on small, size-selected VnFem adsorbates produced by high energy sputtering. The clusters were deposited onto a Cu(100) surface using a soft landing scheme to avoid fragmentation. X-Ray magnetic circular dichroism (XMCD) measurements were carried out up to sizes of n+m=3. The XMCD signal was obtained by switching an external magnetic field (±7T) and scanning the L2,3 edges of V and Fe respectively with circular polarized light at the P04 beamline at PETRA III, DESY. By changing the incidence angle between the incoming light and the sample, the axis of easy magnetization could be found. This work is supported by the DFG in the framework of the SFB 668.