Regensburg 2010 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 24: Particles and clusters

O 24.3: Vortrag

Dienstag, 23. März 2010, 11:00–11:15, H34

Orbital and spin magnetic moments of small, deposited CoPd alloy clusters on Ni/Cu(100) — •Steffen Fiedler1, Ivan Baev1, Kai Chen1, Leif Glaser1, Paolo Imperia2, Stephan Klumpp1, Michael Martins1, and Wilfried Wurth11Institut für Experimentalphysik, Universität Hamburg — 2Institute of Materials and Engineering Science, Australian Nuclear Science and Technology Organisation New Illawarra Road, Lucas Heights, NSW Australia

It has been shown that the orbital magnetic moments of Co clusters can be exceptionally large on a platinum substrate [1]. Together with a strong induced spin-orbit-coupling this leads to a high magnetic anisotropy.

We examine the magnetic moments of transition metal elements in small, mass selected alloy clusters on ferromagnetic substrates with the method of X-ray circular magnetic dichroism (XMCD). The measurements are performed at the storage ring of the synchrotron radiation source Bessy II in Berlin. Starting with CoxPty clusters we proceeded with the investigation of CoxPdy clusters. We will classify the results in the light of the previous measurements also including pure Cox clusters as a reference.

This work was funded by the DFG through the SPP 1153.

[1] P. Gambardella et al., Science 300, 1130 (2003)

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