Signal Asymmetries in the Anomalous Hall Effect of Bilayer Magnetic Nanostructures

Rhys Griffiths, Paul Nutter, A. Neumann, C. Thönnißen , E.-S. Wilhelm , Thomas Thomson

    Research output: Contribution to journalArticlepeer-review


    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.
    Original languageEnglish
    Article number132401
    JournalApplied Physics Letters
    Issue number13
    Early online date26 Sept 2016
    Publication statusPublished - 26 Sept 2016


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