The authors report a strategy to break inversion symmetry in infinite-layer nickelate superconductors through artificial superlattice design. Asymmetric residual oxygen at the interfaces induces inversion symmetry breaking and nonreciprocal charge transport, emerging below the superconducting transition, which can provide a route to probe superconducting mechanisms.
- Taisei Nishida
- Motoki Osada
- Atsushi Tsukazaki