Bilayer nickelate films exhibit symmetric nodeless superconducting energy gaps, enabling ambient zero-resistance superconductor design

https://phys.org/news/2026-05-nickelate-reveals-nodeless-gap-key.html

"in contrast to d-wave, node-heavy gap structures of high-temperature cuprate superconductors... nodeless gap behavior is an inherent, intrinsic property of the bilayer nickelate lattice rather than an artifact induced by external substrate strain... delivers a precise chemical and physical blueprint that will help theorists decode the exact mechanism behind high-temperature superconductivity to engineer more resilient, ambient-temperature lossless power components"