5 papers
Topological phase transition driven by Hatsugai-Kohmoto interaction on the Kagome lattice
Zhuo-Xuan Yang, Jiangfan Wang
The interplay between band topology and strong correlations is central to modern condensed matter physics, but exact solutions are rare. Here, we present an exactly solvable model…
A unified theory of thin film and bulk bilayer nickelates
Jiangfan Wang, Yi-feng Yang
The discovery of bilayer nickelate superconductivity in both pressurized bulk and thin films has drawn enormous attention on their similarity and distinction. Here we provide a uni…
Interlayer pairing mechanism for bilayer nickelate superconductors
Jiangfan Wang, Yi-feng Yang
The discovery of superconductivity in Ruddlesden-Popper bilayer nickelates under both high pressure and ambient conditions has opened a new paradigm for exploring unconventional su…
Auxiliary-Bath Numerical Renormalization Group Method and Successive Collective Screening in Multi-Impurity Kondo Systems
Danqing Hu, Jiangfan Wang, Yi-feng Yang
We propose an auxiliary-bath algorithm for the numerical renormalization group (NRG) method to solve multi-impurity models with shared electron baths. The method allows us to disen…
Fermi liquid and isotropic superconductivity of Hund scenario for bilayer nickelates
Jiangfan Wang, Yi-feng Yang
Recent experiments on bulk and thin film bilayer nickelate high- superconductors urge for clarification of their pairing mechanism. Debates exist on whether the hybridization…