Extended Data Fig. 1: Comparison of different spin models.
From: Fractional antiferromagnetic skyrmion lattice induced by anisotropic couplings
a, INS spectra S(Q, ω) collected on FOCUS at T = 1.3 K using a powder sample of MnSc2S4. b–d, INS spectra calculated using the linear spin-wave theory for the J1–J2–J3 model with J1 = −0.31 K, J2 = 0.46 K and J3 = 0.087 K, as discussed in the main text (b), for the J1–J2 model with J1 = −0.71 K, J2 = −0.85 × J1 = 0.60 K (c), and for the J1–J2–J3 model with parameters calculated from the DFT calculations32, J1 = −0.378 K, J2 = 0.621 K and J3 = 0.217 K. Note the different energy ranges in different panels.
