Fig. 2
From: Robust quantum valley Hall effect for vortices in an interacting bosonic quantum fluid
Valley polarized topological interface modes. a, b Energy of the vortex core at the interface as a function of its central wavevector, exhibiting valley chirality (Solid blue line; a-K, b-K′). Linear state dispersion on the interface (blue dashed) and in the bulk (black dots). c Energy of the vortex as a function of position. Blue and green curves correspond to a direct interface or a larger one constituted of 4 unstaggered zigzag chains centered at x = 0, respectively
