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Chirality coupling in topological magnetic textures with multiple magnetochiral parameters

Author

Listed:
  • Oleksii M. Volkov

    (Institute of Ion Beam Physics and Materials Research)

  • Daniel Wolf

    (Institute for Solid State Research)

  • Oleksandr V. Pylypovskyi

    (Institute of Ion Beam Physics and Materials Research
    Kyiv Academic University)

  • Attila Kákay

    (Institute of Ion Beam Physics and Materials Research)

  • Denis D. Sheka

    (Taras Shevchenko National University of Kyiv)

  • Bernd Büchner

    (Institute for Solid State Research
    Institute of Solid State and Materials Physics
    Würzburg-Dresden Cluster of Excellence ct.qmat)

  • Jürgen Fassbender

    (Institute of Ion Beam Physics and Materials Research)

  • Axel Lubk

    (Institute for Solid State Research
    Institute of Solid State and Materials Physics
    Würzburg-Dresden Cluster of Excellence ct.qmat)

  • Denys Makarov

    (Institute of Ion Beam Physics and Materials Research)

Abstract

Chiral effects originate from the lack of inversion symmetry within the lattice unit cell or sample’s shape. Being mapped onto magnetic ordering, chirality enables topologically non-trivial textures with a given handedness. Here, we demonstrate the existence of a static 3D texture characterized by two magnetochiral parameters being magnetic helicity of the vortex and geometrical chirality of the core string itself in geometrically curved asymmetric permalloy cap with a size of 80 nm and a vortex ground state. We experimentally validate the nonlocal chiral symmetry breaking effect in this object, which leads to the geometric deformation of the vortex string into a helix with curvature 3 μm−1 and torsion 11 μm−1. The geometric chirality of the vortex string is determined by the magnetic helicity of the vortex texture, constituting coupling of two chiral parameters within the same texture. Beyond the vortex state, we anticipate that complex curvilinear objects hosting 3D magnetic textures like curved skyrmion tubes and hopfions can be characterized by multiple coupled magnetochiral parameters, that influence their statics and field- or current-driven dynamics for spin-orbitronics and magnonics.

Suggested Citation

  • Oleksii M. Volkov & Daniel Wolf & Oleksandr V. Pylypovskyi & Attila Kákay & Denis D. Sheka & Bernd Büchner & Jürgen Fassbender & Axel Lubk & Denys Makarov, 2023. "Chirality coupling in topological magnetic textures with multiple magnetochiral parameters," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
  • Handle: RePEc:nat:natcom:v:14:y:2023:i:1:d:10.1038_s41467-023-37081-z
    DOI: 10.1038/s41467-023-37081-z
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    References listed on IDEAS

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    1. D. D. Sheka & C. Schuster & B. A. Ivanov & F. G. Mertens, 2006. "Dynamics of topological solitons in two-dimensional ferromagnets," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 50(3), pages 393-402, April.
    2. S. Seki & M. Garst & J. Waizner & R. Takagi & N. D. Khanh & Y. Okamura & K. Kondou & F. Kagawa & Y. Otani & Y. Tokura, 2020. "Propagation dynamics of spin excitations along skyrmion strings," Nature Communications, Nature, vol. 11(1), pages 1-7, December.
    3. M. Bode & M. Heide & K. von Bergmann & P. Ferriani & S. Heinze & G. Bihlmayer & A. Kubetzka & O. Pietzsch & S. Blügel & R. Wiesendanger, 2007. "Chiral magnetic order at surfaces driven by inversion asymmetry," Nature, Nature, vol. 447(7141), pages 190-193, May.
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    Cited by:

    1. Oleksii M. Volkov & Oleksandr V. Pylypovskyi & Fabrizio Porrati & Florian Kronast & Jose A. Fernandez-Roldan & Attila Kákay & Alexander Kuprava & Sven Barth & Filipp N. Rybakov & Olle Eriksson & Sebas, 2024. "Three-dimensional magnetic nanotextures with high-order vorticity in soft magnetic wireframes," Nature Communications, Nature, vol. 15(1), pages 1-13, December.

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