Control of morphology and formation of highly geometrically confined magnetic skyrmions View Full Text


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Article Info

DATE

2017-06-05

AUTHORS

Chiming Jin, Zi-An Li, András Kovács, Jan Caron, Fengshan Zheng, Filipp N. Rybakov, Nikolai S. Kiselev, Haifeng Du, Stefan Blügel, Mingliang Tian, Yuheng Zhang, Michael Farle, Rafal E Dunin-Borkowski

ABSTRACT

The ability to controllably manipulate magnetic skyrmions, small magnetic whirls with particle-like properties, in nanostructured elements is a prerequisite for incorporating them into spintronic devices. Here, we use state-of-the-art electron holographic imaging to directly visualize the morphology and nucleation of magnetic skyrmions in a wedge-shaped FeGe nanostripe that has a width in the range of 45–150 nm. We find that geometrically-confined skyrmions are able to adopt a wide range of sizes and ellipticities in a nanostripe that are absent in both thin films and bulk materials and can be created from a helical magnetic state with a distorted edge twist in a simple and efficient manner. We perform a theoretical analysis based on a three-dimensional general model of isotropic chiral magnets to confirm our experimental results. The flexibility and ease of formation of geometrically confined magnetic skyrmions may help to optimize the design of skyrmion-based memory devices. More... »

PAGES

15569

References to SciGraph publications

  • 2014-10-17. Creation of skyrmions and antiskyrmions by local heating in NATURE COMMUNICATIONS
  • 2015-10-08. Edge-mediated skyrmion chain and its collective dynamics in a confined geometry in NATURE COMMUNICATIONS
  • 2010-12-05. Near room-temperature formation of a skyrmion crystal in thin-films of the helimagnet FeGe in NATURE MATERIALS
  • 2014-04-13. Observation of the magnetic flux and three-dimensional structure of skyrmion lattices by electron holography in NATURE NANOTECHNOLOGY
  • 2015-06-01. Large anisotropic deformation of skyrmions in strained crystal in NATURE NANOTECHNOLOGY
  • 2013-12-04. Topological properties and dynamics of magnetic skyrmions in NATURE NANOTECHNOLOGY
  • 2013-10-27. Nucleation, stability and current-induced motion of isolated magnetic skyrmions in nanostructures in NATURE NANOTECHNOLOGY
  • 2015-07-06. Electrical probing of field-driven cascading quantized transitions of skyrmion cluster states in MnSi nanowires in NATURE COMMUNICATIONS
  • 2012-04-23. Current-induced torques in magnetic materials in NATURE MATERIALS
  • 2010-06. Real-space observation of a two-dimensional skyrmion crystal in NATURE
  • 2013-09-08. Current-induced skyrmion dynamics in constricted geometries in NATURE NANOTECHNOLOGY
  • 2009-04. Electron tomography and holography in materials science in NATURE MATERIALS
  • 2013-03-05. Skyrmions on the track in NATURE NANOTECHNOLOGY
  • 2015-11-25. Ground state search, hysteretic behaviour and reversal mechanism of skyrmionic textures in confined helimagnetic nanostructures in SCIENTIFIC REPORTS
  • 2013-09-08. Towards control of the size and helicity of skyrmions in helimagnetic alloys by spin–orbit coupling in NATURE NANOTECHNOLOGY
  • Identifiers

    URI

    http://scigraph.springernature.com/pub.10.1038/ncomms15569

    DOI

    http://dx.doi.org/10.1038/ncomms15569

    DIMENSIONS

    https://app.dimensions.ai/details/publication/pub.1085862459

    PUBMED

    https://www.ncbi.nlm.nih.gov/pubmed/28580935


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