Temperature dependent magnetic spin and orbital moments of mass-filtered cobalt clusters on Au(111) |
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| Authors: | J. Bansmann A. Kleibert F. Bulut M. Getzlaff P. Imperia C. Boeglin K.-H. Meiwes-Broer |
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| Affiliation: | 1.Institut für Oberfl?chenchemie und Katalyse, Universit?t Ulm,Ulm,Germany;2.Institut für Physik, Universit?t Rostock, Universit?tsplatz 3,Rostock,Germany;3.Institut für Angewandte Physik, Universit?t Düsseldorf, Universit?tsstrasse 1,Düsseldorf,Germany;4.Institut für Experimentalphysik, Universit?t Hamburg,Hamburg,Germany;5.Institut de Physique et de Chimie des Matériaux de Strasbourg, UMR 7504 CNRS-Université Louis Pasteur,Strasbourg Cedex 2,France |
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| Abstract: | Mass-filtered cobalt clusters with a size of 8 nm have been deposited in-situ under soft-landing conditions onto Au(111). The spin and orbital moments of the Co nanoparticles on a Au (111) single crystal have been investigated as a function of the temperature using the element-specific method of X-ray magnetic circular dichroism in photoabsorption. The results hint at an temperature-dependent spin-reorientation transition which is discussed with respect to different contribution to the magnetic anisotropy. Furthermore, by means of an in-situ oxidation experiment, the influence of an exposure to oxygen on the properties of the cobalt clusters has been investigated. |
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| Keywords: | 73.22.-f Electronic structure of nanoscale materials: clusters, nanoparticles, nanotubes, and nanocrystals 75.70.-i Magnetic properties of thin films, surfaces, and interfaces 75.75.+a Magnetic properties of nanostructures 81.07.-b Nanoscale materials and structures: fabrication and characterization |
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