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. 2016 Sep 21;7:12691. doi: 10.1038/ncomms12691

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Copyright © 2016, The Author(s)

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(a) The spin-wave spectrum along high-symmetry momentum lines with a linear band touching that is marked with a (red) dashed circle. (b) Four Weyl nodes are located at (±k₀, 0, 0), (0, ±k₀, 0) with k₀=1.072π in the xy plane of the Brillouin zone. The (red) circle has an opposite chirality from the (blue) diamond. In the figure, we have set D=0.2J, J′=0.6J and θ=π/2.