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Hanneken C, Otte F, Kubetzka A, et al. Electrical detection of magnetic skyrmions by tunnelling non-collinear magnetoresistance. Nat Nanotechnol. 2015;10(12):1039-42doi: 10.1038/nnano.2015.218.
Hanneken, C., Otte, F., Kubetzka, A., Dupé, B., Romming, N., von Bergmann, K., Wiesendanger, R., & Heinze, S. (2015). Electrical detection of magnetic skyrmions by tunnelling non-collinear magnetoresistance. Nature nanotechnology, 10(12), 1039-42. https://doi.org/10.1038/nnano.2015.218
Hanneken, Christian, et al. "Electrical detection of magnetic skyrmions by tunnelling non-collinear magnetoresistance." Nature nanotechnology vol. 10,12 (2015): 1039-42. doi: https://doi.org/10.1038/nnano.2015.218
Hanneken C, Otte F, Kubetzka A, Dupé B, Romming N, von Bergmann K, Wiesendanger R, Heinze S. Electrical detection of magnetic skyrmions by tunnelling non-collinear magnetoresistance. Nat Nanotechnol. 2015 Dec;10(12):1039-42. doi: 10.1038/nnano.2015.218. Epub 2015 Oct 05. PMID: 26436563.
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Nat Nanotechnol. 2015 Dec;10(12):1039-42. doi: 10.1038/nnano.2015.218. Epub 2015 Oct 05.

Electrical detection of magnetic skyrmions by tunnelling non-collinear magnetoresistance.

Nature nanotechnology

Christian Hanneken, Fabian Otte, André Kubetzka, Bertrand Dupé, Niklas Romming, Kirsten von Bergmann, Roland Wiesendanger, Stefan Heinze

Affiliations

  1. Department of Physics, University of Hamburg, Jungiusstrasse 11, Hamburg 20355, Germany.
  2. Institute of Theoretical Physics and Astrophysics, Christian-Albrechts-Universität zu Kiel, Leibnizstrasse 15, Kiel 24098, Germany.

PMID: 26436563 DOI: 10.1038/nnano.2015.218

Abstract

Magnetic skyrmions are localized non-collinear spin textures with a high potential for future spintronic applications. Skyrmion phases have been discovered in a number of materials and a focus of current research is to prepare, detect and manipulate individual skyrmions for implementation in devices. The local experimental characterization of skyrmions has been performed by, for example, Lorentz microscopy or atomic-scale tunnel magnetoresistance measurements using spin-polarized scanning tunnelling microscopy. Here we report a drastic change of the differential tunnel conductance for magnetic skyrmions that arises from their non-collinearity: mixing between the spin channels locally alters the electronic structure, which makes a skyrmion electronically distinct from its ferromagnetic environment. We propose this tunnelling non-collinear magnetoresistance as a reliable all-electrical detection scheme for skyrmions with an easy implementation into device architectures.

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