Interlayer hybridization promotes superconductivity in bilayer nickelates.

Nature materials · 23 Sept 2026 · Journal Article · Open access

Zhang, Zhang + more

The abstract is read at the publisher; the summary is JClub's.

Superconductivity in bilayer (La,Pr)3Ni2O7 thin films is linked to coherent dz2-pz-dz2 interlayer hybridization, alongside suppressed static spin order and strongly damped spin excitations.

Why it matters: The electronic reconstruction behind superconductivity in bilayer nickelates is unresolved because superconducting samples are hard to probe directly.
What they did: The team stabilized superconducting (La,Pr)3Ni2O7 thin films using a protective capping layer, then used X-ray absorption and resonant inelastic X-ray scattering across insulating, superconducting, and metallic states, supported by theory.
The result: Oxygen stoichiometry and epitaxial strain tune the interlayer hybridization channel, placing superconductivity in a narrow regime of interlayer coherence and supporting a multiorbital picture.

AI summary of the abstract · may contain errors · not medical advice · read the paper.

Open access
13 cites

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Interlayer hybridization promotes superconductivity in bilayer nickelates.

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