Correlated electronic structures and unconventional superconductivity in bilayer nickelate heterostructures

作者：Changming Yue, Jian-jian Miao, Haoliang Huang, Yichen Hua, Peng Li, Yueying Li, Guangdi Zhou, Wei Lv, Qishuo Yang, Fan Yang, Hongyi Sun, Yu-Jie Sun, Junhao Lin, Qi-Kun Xue, Zhuoyu Chen, Weiqiang Chen · 发表于：National Science Review · 年份：2025 · DOI：10.1093/nsr/nwaf253 · 被引用次数：55 · 研究领域：Medicine、Physics

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 (\documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} $T_\mathrm{c}$\end{document}) 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 \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} $U$\end{document} and experimentally measured electron filling \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} $n$\end{document}, quantitatively repro...