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Probing the spinor nature of electronic states in nanosize non-collinear magnets

Author

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  • Jeison A. Fischer

    (Max-Planck-Institut für Mikrostrukturphysik
    Laboratório de Filmes Finos e Superfícies, Universidade Federal de Santa Catarina)

  • Leonid M. Sandratskii

    (Max-Planck-Institut für Mikrostrukturphysik)

  • Soo-Hyon Phark

    (Max-Planck-Institut für Mikrostrukturphysik
    Center for Nanometrology, Korea Research Institute of Standards and Science)

  • Safia Ouazi

    (Max-Planck-Institut für Mikrostrukturphysik)

  • André A. Pasa

    (Laboratório de Filmes Finos e Superfícies, Universidade Federal de Santa Catarina)

  • Dirk Sander

    (Max-Planck-Institut für Mikrostrukturphysik)

  • Stuart S. P. Parkin

    (Max-Planck-Institut für Mikrostrukturphysik)

Abstract

Non-collinear magnetization textures provide a route to novel device concepts in spintronics. These applications require laterally confined non-collinear magnets (NCM). A crucial aspect for potential applications is how the spatial proximity between the NCM and vacuum or another material impacts the magnetization texture on the nanoscale. We focus on a prototypical exchange-driven NCM given by the helical spin order of bilayer Fe on Cu(111). Spin-polarized scanning tunnelling spectroscopy and density functional theory reveal a nanosize- and proximity-driven modification of the electronic and magnetic structure of the NCM in interfacial contact with a ferromagnet or with vacuum. An intriguing non-collinearity between the local magnetization in the sample and the electronic magnetization probed above its surface results. It is a direct consequence of the spinor nature of electronic states in NCM. Our findings provide a possible route for advanced control of nanoscale spin textures by confinement.

Suggested Citation

  • Jeison A. Fischer & Leonid M. Sandratskii & Soo-Hyon Phark & Safia Ouazi & André A. Pasa & Dirk Sander & Stuart S. P. Parkin, 2016. "Probing the spinor nature of electronic states in nanosize non-collinear magnets," Nature Communications, Nature, vol. 7(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:7:y:2016:i:1:d:10.1038_ncomms13000
    DOI: 10.1038/ncomms13000
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