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APS » Journals » Phys. Rev. B » Volume 59 » Issue 2
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Phys. Rev. B 59, R701–R704 (1999)

Spin and orbital magnetization in self-assembled Co clusters on Au(111)

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H. A. Dürr, S. S. Dhesi, and E. Dudzik
Daresbury Laboratory, Warrington WA4 4AD, United Kingdom

D. Knabben
Institut für Angewandte Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany

G. van der Laan
Daresbury Laboratory, Warrington WA4 4AD, United Kingdom

J. B. Goedkoop
European Synchrotron Radiation Facility, Boîte Postale 220, 38043 Grenoble, France

F. U. Hillebrecht
Institut für Angewandte Physik, Heinrich-Heine-Universität, D-40225 Düsseldorf, Germany

Received 7 October 1998; published in the issue dated 1 January 1999

We show that superparamagnetic Co clusters supported on a Au(111) surface exhibit a strong variation in perpendicular magnetic anisotropy with cluster size, which can be ascribed to electron localization at the perimeter of the clusters. The reduced dimensionality of such sites leads to drastic changes in the 3d electronic structure resulting in an increased orbital magnetic moment and a temperature-dependent 3d band occupancy.

© 1999 The American Physical Society

URL:
http://link.aps.org/doi/10.1103/PhysRevB.59.R701
DOI:
10.1103/PhysRevB.59.R701
PACS:
75.30.Pd, 75.25.+z, 75.30.Gw, 78.70.Dm
 
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