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. 2021 May 5;7(19):eabf5299. doi: 10.1126/sciadv.abf5299

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Fig. 3 — Ratio of the elastic energy of the 2e skyrmion to the particle-hole band gap in the nearly chiral (orange) and realistic (purple) limits, with stiffness and gap values extracted from self-consistent Hartree-Fock. Below the gray dashed line, the skyrmion energy lies within the particle-hole gap. Note that w₀ and w₁ are the interlayer hoppings in AA- and AB-stacked regions [see (25) for details].