Fig. 4

Kibble–Lazarides–Shafi (KLS) wall configurations in the PdB phase. Each HQV core terminates one soliton—reorientation of the spin part of the order parameter denoted by the angle θ—and one KLS wall. The orientation of the \(\widehat {\mathbf{d}}\)-vector is shown as arrows where their color indicates the angle θ, based on numerical calculations (Supplementary Figure 2). a The KLS wall is bound between a different pair of HQV cores as the soliton. Ignoring the virtual jumps, the angle θ winds by π − 2θ₀ across the soliton and by 2θ₀ across the KLS wall. The order parameter is continuous across the virtual jumps, where ϕ → ϕ + π, θ → θ + π, and q₂ → −q₂. b The soliton and the KLS wall are bound between the same pair of HQV cores. The total winding of the \(\widehat {\mathbf{d}}\)-vector is π across the structure. In principle, the KLS wall may lie inside or outside the soliton. Here the KLS wall and the soliton are spatially separated for clarity