Geometry-induced spin-momentum locking in a BIC metasurface produces pinned half-vortices in a polariton condensate that displace controllably with excitation density while a topological domain wall prevents their annihilation.
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Topology-guided vortices in a polariton condensate
Geometry-induced spin-momentum locking in a BIC metasurface produces pinned half-vortices in a polariton condensate that displace controllably with excitation density while a topological domain wall prevents their annihilation.