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Toggle-like current-induced Bloch point dynamics of 3D skyrmion strings in a room temperature nanowire

Author

Listed:
  • M. T. Birch

    (Max Planck Institute for Intelligent Systems)

  • D. Cortés-Ortuño

    (Utrecht University)

  • K. Litzius

    (Max Planck Institute for Intelligent Systems)

  • S. Wintz

    (Max Planck Institute for Intelligent Systems
    Helmholtz-Zentrum Berlin für Materialien und Energie GmbH)

  • F. Schulz

    (Max Planck Institute for Intelligent Systems)

  • M. Weigand

    (Helmholtz-Zentrum Berlin für Materialien und Energie GmbH)

  • A. Štefančič

    (University of Warwick
    Paul Scherrer Institut)

  • D. A. Mayoh

    (University of Warwick)

  • G. Balakrishnan

    (University of Warwick)

  • P. D. Hatton

    (Durham University)

  • G. Schütz

    (Max Planck Institute for Intelligent Systems)

Abstract

Research into practical applications of magnetic skyrmions, nanoscale solitons with interesting topological and transport properties, has traditionally focused on two dimensional (2D) thin-film systems. However, the recent observation of novel three dimensional (3D) skyrmion-like structures, such as hopfions, skyrmion strings (SkS), skyrmion bundles, and skyrmion braids, motivates the investigation of new designs, aiming to exploit the third spatial dimension for more compact and higher performance spintronic devices in 3D or curvilinear geometries. A crucial requirement of such device schemes is the control of the 3D magnetic structures via charge or spin currents, which has yet to be experimentally observed. In this work, we utilise real-space imaging to investigate the dynamics of a 3D SkS within a nanowire of Co8Zn9Mn3 at room temperature. Utilising single current pulses, we demonstrate current-induced nucleation of a single SkS, and a toggle-like positional switching of an individual Bloch point at the end of a SkS. The observations highlight the possibility to locally manipulate 3D topological spin textures, opening up a range of design concepts for future 3D spintronic devices.

Suggested Citation

  • M. T. Birch & D. Cortés-Ortuño & K. Litzius & S. Wintz & F. Schulz & M. Weigand & A. Štefančič & D. A. Mayoh & G. Balakrishnan & P. D. Hatton & G. Schütz, 2022. "Toggle-like current-induced Bloch point dynamics of 3D skyrmion strings in a room temperature nanowire," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-31335-y
    DOI: 10.1038/s41467-022-31335-y
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    References listed on IDEAS

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    1. Chenhui Zhang & Ze Jiang & Jiawei Jiang & Wa He & Junwei Zhang & Fanrui Hu & Shishun Zhao & Dongsheng Yang & Yakun Liu & Yong Peng & Hongxin Yang & Hyunsoo Yang, 2024. "Above-room-temperature chiral skyrmion lattice and Dzyaloshinskii–Moriya interaction in a van der Waals ferromagnet Fe3−xGaTe2," Nature Communications, Nature, vol. 15(1), pages 1-9, December.

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