Asymmetric field dependence of magnetoresistance in magnetic films

Abstract

We study an asymmetric in field magnetoresistance that is frequently observed in magnetic films and, in particular, the odd longitudinal voltage peaks that appear during magnetization reversal in ferromagnetic films, with out-of-plane magnetic anisotropy. We argue that the anomalous signals result from small variation of magnetization and Hall resistivity along the sample. Experimental data can be well described by a simple circuit model, the latter being supported by analytic and numerical calculations of current and electric field distribution in films with a gradual variation of the magnetization and Hall resistance.

7 pages, 5 figures, to be published in Phys. Rev. B

References in corpus (4)

• Giant Planar Hall Effect in Epitaxial (Ga,Mn)As Devices
• Antisymmetric magnetoresistance in magnetic multilayers with perpendicular anisotropy
• Magnetoresistance Anomalies in (Ga,Mn)As Epilayers with Perpendicular Magnetic Anisotropy
• The longitudinal resistance of a quantum Hall system with a density gradient

Cited by in corpus (2)

• Inhomogeneity and transverse voltage in superconductors
• Non-reciprocal magnetoresistance, directional inhomogeneity and mixed symmetry Hall devices