Dresden 2011 – wissenschaftliches Programm
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O: Fachverband Oberflächenphysik
O 101: Particles and clusters II
O 101.1: Vortrag
Freitag, 18. März 2011, 11:15–11:30, WIL C107
(contribution withdrawn) Orbital and spin magnetic moments of small, size-selected CoRh alloy clusters, deposited on Ni/Cu(100) — •Torben Beeck, Ivan Baev, Kai Chen, Michael Martins, and Wilfried Wurth — Institute of Experimental Physics, University of Hamburg, Luruper Chaussee 149, 22761 Hamburg, Germany
Besides their high potential for applications in magnetic materials and chemical catalysis, transition metal clusters of few atoms are excellent candidates for comparison with complex theoretical calculations, including correlation effects which become very important on the nanoscale.
X-ray magnetic circular dichroism (XMCD) studies on small, size-selected CoxRhy transition metal clusters have been carried out at the Co L2,3 absorption edges. Under UHV conditions the clusters were deposited in situ on a remanently magnetized Ni thin film evaporated upon a Cu(100) crystal. All the measurements were performed at the BESSY II, UE52 SGM beamline.
We will show the orbital and spin magnetic moments of the CoxRhy clusters which exhibit changes with cluster size and composition. A comparison to other transition metal alloy clusters will be given.
This work is supported by the DFG in the framework of the SFB 668 subproject A7