Fig. 4
From: Observation of spin–orbit coupling induced Weyl points in a two-electron double quantum dot
Magnetic Weyl points in spin–orbit-coupled few-spin systems. a An example of evolution and annihilation of Weyl points with opposite charges (red with Chern number +1, blue with −1) upon continuous deformation of a spin–orbit-coupled two-spin Hamiltonian. b, c Statistics of the number of magnetic Weyl points for randomly chosen spin–orbit-coupled Hamiltonians for b a two-spin system and c a three-spin system
