Field-Direction Sensitive Skyrmion Crystals in Cubic Chiral Systems: Implication to 4f-Electron Compound EuPtSi

@article{Hayami2021FieldDirectionSS,
  title={Field-Direction Sensitive Skyrmion Crystals in Cubic Chiral Systems: Implication to 4f-Electron Compound EuPtSi},
  author={Satoru Hayami and Ryota Yambe},
  journal={Journal of the Physical Society of Japan},
  year={2021}
}
We theoretically study the stability of magnetic skyrmion crystals (SkXs) in chiral cubic antiferromagnets with the EuPtSi hosting unconventional nanometric SkXs in mind. By performing numerical simulations for a minimal effective spin model with the long-range Dzyaloshinskii-Moriya interaction and the multiple-spin interaction arising from itinerant nature of electrons, we clarify two key ingredients for the emergence of the SkXs in EuPtSi: One is the lowsymmetric ordering vectors that lead to… Expand
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Topological spin crystals by itinerant frustration
  • S. Hayami, Y. Motome
  • Physics, Medicine
  • Journal of physics. Condensed matter : an Institute of Physics journal
  • 2021
TLDR
Focusing on the interplay between charge and spin degrees of freedom in itinerant electron systems, it is shown that itinerant frustration, which is the competition among electron-mediated interactions, plays a central role in stabilizing a variety of topological spin crystals including a skyrmion crystal with unconventional high skyrnion number, meron crystals, and hedgehog crystals. Expand

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33) the nearest-neighbor DM interaction is twice (≈ 2πa/λ 3) ) as large as the nearest-neighbor ferromagnetic interaction
    The following results remain the same for N = 30 2