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Spontaneous skyrmionic lattice from anisotropic symmetric exchange in a Ni-halide monolayer

Author

Listed:
  • Danila Amoroso

    (Consiglio Nazionale delle Ricerche CNR-SPIN, c/o Università degli Studi ‘G. D’Annunzio’)

  • Paolo Barone

    (Consiglio Nazionale delle Ricerche CNR-SPIN, c/o Università degli Studi ‘G. D’Annunzio’)

  • Silvia Picozzi

    (Consiglio Nazionale delle Ricerche CNR-SPIN, c/o Università degli Studi ‘G. D’Annunzio’)

Abstract

Topological spin structures, such as magnetic skyrmions, hold great promises for data storage applications, thanks to their inherent stability. In most cases, skyrmions are stabilized by magnetic fields in non-centrosymmetric systems displaying the chiral Dzyaloshinskii-Moriya exchange interaction, while spontaneous skyrmion lattices have been reported in centrosymmetric itinerant magnets with long-range interactions. Here, a spontaneous anti-biskyrmion lattice with unique topology and chirality is predicted in the monolayer of a semiconducting and centrosymmetric metal halide, NiI2. Our first-principles and Monte Carlo simulations reveal that the anisotropies of the short-range symmetric exchange, when combined with magnetic frustration, can lead to an emergent chiral interaction that is responsible for the predicted topological spin structures. The proposed mechanism finds a prototypical manifestation in two-dimensional magnets, thus broadening the class of materials that can host spontaneous skyrmionic states.

Suggested Citation

  • Danila Amoroso & Paolo Barone & Silvia Picozzi, 2020. "Spontaneous skyrmionic lattice from anisotropic symmetric exchange in a Ni-halide monolayer," Nature Communications, Nature, vol. 11(1), pages 1-9, December.
    • Handle: RePEc:nat:natcom:v:11:y:2020:i:1:d:10.1038_s41467-020-19535-w
    DOI: 10.1038/s41467-020-19535-w
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    Cited by:

    1. Longju Yu & Hong Jian Zhao & Peng Chen & Laurent Bellaiche & Yanming Ma, 2023. "The anti-symmetric and anisotropic symmetric exchange interactions between electric dipoles in hafnia," Nature Communications, Nature, vol. 14(1), pages 1-9, December.
    2. Mara Gutzeit & André Kubetzka & Soumyajyoti Haldar & Henning Pralow & Moritz A. Goerzen & Roland Wiesendanger & Stefan Heinze & Kirsten Bergmann, 2022. "Nano-scale collinear multi-Q states driven by higher-order interactions," Nature Communications, Nature, vol. 13(1), pages 1-11, December.

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