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Jin C, Li ZA, Kovács A, et al. Control of morphology and formation of highly geometrically confined magnetic skyrmions. Nat Commun. 2017;8:15569doi: 10.1038/ncomms15569.
Jin, C., Li, Z. A., Kovács, A., Caron, J., Zheng, F., Rybakov, F. N., Kiselev, N. S., Du, H., Blügel, S., Tian, M., Zhang, Y., Farle, M., & Dunin-Borkowski, R. E. (2017). Control of morphology and formation of highly geometrically confined magnetic skyrmions. Nature communications, 815569. https://doi.org/10.1038/ncomms15569
Jin, Chiming, et al. "Control of morphology and formation of highly geometrically confined magnetic skyrmions." Nature communications vol. 8 (2017): 15569. doi: https://doi.org/10.1038/ncomms15569
Jin C, Li ZA, Kovács A, Caron J, Zheng F, Rybakov FN, Kiselev NS, Du H, Blügel S, Tian M, Zhang Y, Farle M, Dunin-Borkowski RE. Control of morphology and formation of highly geometrically confined magnetic skyrmions. Nat Commun. 2017 Jun 05;8:15569. doi: 10.1038/ncomms15569. PMID: 28580935; PMCID: PMC5465359.
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Nat Commun. 2017 Jun 05;8:15569. doi: 10.1038/ncomms15569.

Control of morphology and formation of highly geometrically confined magnetic skyrmions.

Nature communications

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

Affiliations

  1. The Anhui Key Laboratory of Condensed Matter Physics at Extreme Conditions, High Magnetic Field Laboratory, Chinese Academy of Science (CAS), Hefei, Anhui Province 230031, China.
  2. Department of Physics, University of Science and Technology of China, Hefei, Anhui Province 230031, China.
  3. Ernst Ruska-Centre for Microscopy and Spectroscopy with Electrons and Peter Grünberg Institute, Forschungszentrum Jülich, Jülich 52425, Germany.
  4. Faculty of Physics and Center for Nanointegration (CENIDE), University of Duisburg-Essen, Duisburg 48047, Germany.
  5. Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China.
  6. M.N. Miheev Institute of Metal Physics of Ural Branch of Russian Academy of Sciences, Ekaterinburg 620990, Russia.
  7. Ural Federal University, Ekaterinburg 620002, Russia.
  8. KTH Royal Institute of Technology, Stockholm SE-10691, Sweden.
  9. Peter Grünberg Institute and Institute for Advanced Simulation, Forschungszentrum Jülich and JARA, Jülich 52425, Germany.
  10. Collaborative Innovation Center of Advanced Microstructures, Nanjing University, Jiangsu Province 210093, China.
  11. Center of Functionalized Magnetic Materials, Immanuel Kant Baltic Federal University, Kaliningrad 236041, Russian Federation.

PMID: 28580935 PMCID: PMC5465359 DOI: 10.1038/ncomms15569

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.

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