Impurity spin magnetization of thin Fe doped Au films

Details Impurity spin magnetization of thin Fe doped Au films Impurity spin magnetization of thin Fe doped Au films

2000-02-29

arxiv.org/abs/cond-mat/0002467v1

Phys. Rev. Lett. 85 (2000) 2593

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 3 figures, E-mail addresses: devreese@uia.ua.ac.be, fomin@uia.ua.ac.be

Scientific paper

10.1103/PhysRevLett.85.2593

In order to probe the influence of the surface-induced anisotropy on the impurity spin magnetization, we measure the anomalous Hall effect in thin AuFe films at magnetic fields up to 15 T. The observed suppression of the anomalous Hall resistivity at low fields as well as the appearance of a minimum in the differential Hall resistivity at higher fields can be explained by our theoretical model which takes into account the influence of a polycrystalline film structure on the surface-induced anisotropy. Our results imply that the apparent discrepancy between different experimental results for the size effects in dilute magnetic alloys can be linked to a different microstructure of the samples.

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