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Nonlinear Giant Magnetoresistance in Dual Spin Valves

Aziz, A. and Wessely, O. P. and Ali, M. and Edwards, D. M. and Marrows, C. H. and Hickey, B. J. and Blamire, M. G. (2009) Nonlinear Giant Magnetoresistance in Dual Spin Valves. Physical review letters, 103 (23). ISSN 0031-9007

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    Abstract

    Giant magnetoresistance (GMR) arises from differential scattering of the majority and minority spin electrons by a ferromagnet (FM) so that the resistance of a heterostructure depends on the relative magnetic orientation of the FM layers within it separated by nonmagnetic spacers. Here, we show that highly nonequilibrium spin accumulation in metallic heterostructures results in a current-dependent nonlinear GMR which is not predicted within the present understanding of GMR. The behavior can be explained by allowing the scattering asymmetries in an ultrathin FM layer to be current dependent.

    Item Type: Article
    Journal or Publication Title: Physical review letters
    Additional Information: © 2009 The American Physical Society
    Uncontrolled Keywords: MAGNETIC MULTILAYERS ; Spintronics ; GMR ; Fabrication ; magnetism ; nano magnetism ; nano
    Subjects:
    Departments: Faculty of Science and Technology > Physics
    ID Code: 63532
    Deposited By: ep_importer_pure
    Deposited On: 19 Apr 2013 11:21
    Refereed?: Yes
    Published?: Published
    Last Modified: 21 Sep 2017 05:32
    Identification Number:
    URI: http://eprints.lancs.ac.uk/id/eprint/63532

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