Journal of Magnetism and Magnetic Materials 279, 331 (2004)

M. Ziese, R. Höhne, H. C. Semmelhack, K. H. Han, P. Esquinazi and K. Zimmer

Abstract

The magnetoresistance of step edges in magnetite films was systematically studied. An enhancement of the magnetoresistance by the introduction of step edges was observed, especially in the high-field regime. This was modelled by spin-disorder scattering. The analysis revealed magnetic cluster formation at the step edges.