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Square and rhombic lattices of magnetic skyrmions in a centrosymmetric binary compound

Author

Listed:
  • Rina Takagi

    (University of Tokyo
    University of Tokyo
    PRESTO, Japan Science and Technology Agency (JST)
    RIKEN Center for Emergent Matter Science (CEMS))

  • Naofumi Matsuyama

    (University of Tokyo)

  • Victor Ukleev

    (Paul Scherrer Institute (PSI))

  • Le Yu

    (Paul Scherrer Institute (PSI)
    École Polytechnique Fédérale de Lausanne (EPFL)
    École Polytechnique Fédérale de Lausanne (EPFL))

  • Jonathan S. White

    (Paul Scherrer Institute (PSI))

  • Sonia Francoual

    (Deutsches Elektronen-Synchrotron DESY)

  • José R. L. Mardegan

    (Deutsches Elektronen-Synchrotron DESY)

  • Satoru Hayami

    (University of Tokyo
    PRESTO, Japan Science and Technology Agency (JST))

  • Hiraku Saito

    (University of Tokyo)

  • Koji Kaneko

    (Japan Atomic Energy Agency
    Japan Atomic Energy Agency)

  • Kazuki Ohishi

    (Comprehensive Research Organization for Science and Society (CROSS))

  • Yoshichika Ōnuki

    (RIKEN Center for Emergent Matter Science (CEMS))

  • Taka-hisa Arima

    (RIKEN Center for Emergent Matter Science (CEMS)
    University of Tokyo)

  • Yoshinori Tokura

    (University of Tokyo
    RIKEN Center for Emergent Matter Science (CEMS)
    University of Tokyo)

  • Taro Nakajima

    (RIKEN Center for Emergent Matter Science (CEMS)
    University of Tokyo)

  • Shinichiro Seki

    (University of Tokyo
    University of Tokyo
    PRESTO, Japan Science and Technology Agency (JST)
    RIKEN Center for Emergent Matter Science (CEMS))

Abstract

Magnetic skyrmions are topologically stable swirling spin textures with particle-like character, and have been intensively studied as a candidate of high-density information bit. While magnetic skyrmions were originally discovered in noncentrosymmetric systems with Dzyaloshinskii-Moriya interaction, recently a nanometric skyrmion lattice has also been reported for centrosymmetric rare-earth compounds, such as Gd2PdSi3 and GdRu2Si2. For the latter systems, a distinct skyrmion formation mechanism mediated by itinerant electrons has been proposed, and the search of a simpler model system allowing for a better understanding of their intricate magnetic phase diagram is highly demanded. Here, we report the discovery of square and rhombic lattices of nanometric skyrmions in a centrosymmetric binary compound EuAl4, by performing small-angle neutron and resonant elastic X-ray scattering experiments. Unlike previously reported centrosymmetric skyrmion-hosting materials, EuAl4 shows multiple-step reorientation of the fundamental magnetic modulation vector as a function of magnetic field, probably reflecting a delicate balance of associated itinerant-electron-mediated interactions. The present results demonstrate that a variety of distinctive skyrmion orders can be derived even in a simple centrosymmetric binary compound, which highlights rare-earth intermetallic systems as a promising platform to realize/control the competition of multiple topological magnetic phases in a single material.

Suggested Citation

  • Rina Takagi & Naofumi Matsuyama & Victor Ukleev & Le Yu & Jonathan S. White & Sonia Francoual & José R. L. Mardegan & Satoru Hayami & Hiraku Saito & Koji Kaneko & Kazuki Ohishi & Yoshichika Ōnuki & Ta, 2022. "Square and rhombic lattices of magnetic skyrmions in a centrosymmetric binary compound," Nature Communications, Nature, vol. 13(1), pages 1-7, December.
  • Handle: RePEc:nat:natcom:v:13:y:2022:i:1:d:10.1038_s41467-022-29131-9
    DOI: 10.1038/s41467-022-29131-9
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    Cited by:

    1. Deepak Singh & Yukako Fujishiro & Satoru Hayami & Samuel H. Moody & Takuya Nomoto & Priya R. Baral & Victor Ukleev & Robert Cubitt & Nina-Juliane Steinke & Dariusz J. Gawryluk & Ekaterina Pomjakushina, 2023. "Transition between distinct hybrid skyrmion textures through their hexagonal-to-square crystal transformation in a polar magnet," Nature Communications, Nature, vol. 14(1), pages 1-12, December.
    2. Yoshihiro D. Kato & Yoshihiro Okamura & Max Hirschberger & Yoshinori Tokura & Youtarou Takahashi, 2023. "Topological magneto-optical effect from skyrmion lattice," Nature Communications, Nature, vol. 14(1), pages 1-7, December.

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