Nature Electronics, Published online: 15 June 2026; doi:10.1038/s41928-026-01651-y By breaking the out-of-plane symmetry of a Ruddlesden–Popper thin film, a low-loss and tunable microwave dielectric can be created that is compatible with an out-of-plane parallel-plate varactor design.
Breaking symmetry yields a low-loss out-of-plane tunable microwave dielectric
Darrell G. Schlom