Correlated electronic structures and unconventional superconductivity in bilayer nickelate heterostructures.

ABSTRACT: The recent discovery of ambient-pressure superconductivity in thin-film bilayer nickelates opens new possibilities for investigating electronic structures in this new class of high-transition-temperature ([Formula: see text]) superconductors. Here, we construct a realistic multi-orbital Hubbard model for the thin-film system based on structural parameters integrating scanning transmission electron microscopy measurements and ab initio calculations. The interaction parameters are calculated with the constrained random phase approximation (cRPA). Density functional theory (DFT) plus cluster dynamical mean-field theory (CDMFT) calculations, with cRPA-calculated on-site Coulomb repulsive [Formula: see text] and experimentally measured electron filling [Formula: see text], quantitatively

SUBMITTER: Yue C 

PROVIDER: S-EPMC12485619 | biostudies-literature | 2025 Oct

REPOSITORIES: biostudies-literature