Signal asymmetries in the anomalous Hall effect of bilayer magnetic nanostructures

We propose an interpretation for the signal asymmetry observed in anomalous Hall effect (AHE) transport measurements of magnetic nanostructures patterned from bilayer magnetic thin films. Experimental data and simulations demonstrate that the signal asymmetry observed in hysteresis loops arises due...

Full description

Saved in:
Bibliographic Details
Published in:Applied physics letters 2016-09, Vol.109 (13)
Main Authors: Griffiths, R. A., Nutter, P. W., Neumann, A., Thönnißen, C., Wilhelm, E.-S., Thomson, T.
Format: Article
Language:English
Subjects:
Applied physics
Asymmetry
Bilayers
Electromagnetism
Giant magnetoresistance
Hall effect
Hysteresis loops
Magnetic thin films
Magnetoresistance
Magnetoresistivity
Nanostructure
Thin films
Transport
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:We propose an interpretation for the signal asymmetry observed in anomalous Hall effect (AHE) transport measurements of magnetic nanostructures patterned from bilayer magnetic thin films. Experimental data and simulations demonstrate that the signal asymmetry observed in hysteresis loops arises due to a combination of the anomalous Hall effect together with a contribution from longitudinal giant magnetoresistance (GMR). The effect shows a high-sensitivity to nanoscale misalignments in Hall cross geometry. Consequently, the complex nature of the origin of electrical signals should be taken into account when undertaking any transport measurements on magnetic bilayer nanostructures, such as GMR or spintronic devices.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4963231