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Three-dimensional skyrmionic cocoons in magnetic multilayers

Author

Listed:
  • Matthieu Grelier

    (Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay)

  • Florian Godel

    (Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay)

  • Aymeric Vecchiola

    (Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay)

  • Sophie Collin

    (Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay)

  • Karim Bouzehouane

    (Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay)

  • Albert Fert

    (Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay)

  • Vincent Cros

    (Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay)

  • Nicolas Reyren

    (Unité Mixte de Physique, CNRS, Thales, Université Paris-Saclay)

Abstract

Three-dimensional spin textures emerge as promising quasi-particles for encoding information in future spintronic devices. The third dimension provides more malleability regarding their properties and more flexibility for potential applications. However, the stabilization and characterization of such quasi-particles in easily implementable systems remain a work in progress. Here we observe a three-dimensional magnetic texture that sits in the interior of magnetic thin films aperiodic multilayers and possesses a characteristic ellipsoidal shape. Interestingly, these objects that we call skyrmionic cocoons can coexist with more standard tubular skyrmions going through all the multilayer as evidenced by the existence of two very different contrasts in room temperature magnetic force microscopy. The presence of these novel skyrmionic textures as well as the understanding of their layer resolved chiral and topological properties have been investigated by micromagnetic simulations. Finally, we show that the skyrmionic cocoons can be electrically detected using magneto-transport measurements.

Suggested Citation

  • Matthieu Grelier & Florian Godel & Aymeric Vecchiola & Sophie Collin & Karim Bouzehouane & Albert Fert & Vincent Cros & Nicolas Reyren, 2022. "Three-dimensional skyrmionic cocoons in magnetic multilayers," Nature Communications, Nature, vol. 13(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-34370-x
    DOI: 10.1038/s41467-022-34370-x
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    References listed on IDEAS

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    1. Mona Bhukta & Takaaki Dohi & Venkata Krishna Bharadwaj & Ricardo Zarzuela & Maria-Andromachi Syskaki & Michael Foerster & Miguel Angel Niño & Jairo Sinova & Robert Frömter & Mathias Kläui, 2024. "Homochiral antiferromagnetic merons, antimerons and bimerons realized in synthetic antiferromagnets," Nature Communications, Nature, vol. 15(1), pages 1-10, December.

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