Fig. 4: Chiral Majorana modes along domain walls.

Electronic band structure as a function of momentum k_∥ along the domain wall for a a spin, and b a π-phase domain wall. Energy-resolved local density of states for c the spin, and d the π-phase domain wall along a linecut perpendicular to the domain wall. The position of the domain wall is indicated by a dashed gray line. Spatial plot of the zero-energy local density of states for e a spin, and f a π-phase domain wall. Spatial distribution of supercurrents near g the spin, and h the π-phase domain wall. For both domain walls, (α, Δμ) = (7, 0) meV, with JS = ±7.5 meV corresponding to domains with Chern number C = ±1 separated by the spin domain wall. Here, α is the Rashba spin–orbit coupling, and JS is the magnetic exchange strength.