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Orbital-selective electron correlations in high- bilayer nickelates: from a global phase diagram to implications for spectroscopy
Zhiguang Liao, Yiming Wang, Lei Chen +3
Motivated by the high temperature superconductivity observed in the bilayer nickelate LaNiO and the spectroscopic evidences of strong electron correlations in this comp…
First-Principles Study of the Fermi Surface Topology of CeCuSi
Roxanne M. Tutchton, Jean-Pierre Julien, Qimiao Si +1
Since the discovery of heavy-fermion superconductivity in CeCuSi, the material has attracted great interest particularly with regard to the nature of the superconductin…
Fully nonequilibrium Hall response from Berry curvature
Shouvik Sur, Lei Chen, Yiming Wang +3
In topological materials, Berry curvature leads to intrinsic Hall responses. Focusing on time-reversal symmetric systems with broken inversion symmetry, a spontaneoous (zero magnet…
Persistent flat band splitting and strong selective band renormalization in a kagome magnet thin film
Zheng Ren, Jianwei Huang, Hengxin Tan +21
Magnetic kagome materials provide a fascinating playground for exploring the interplay of magnetism, correlation and topology. Many magnetic kagome systems have been reported inclu…
Superconductivity in twisted WSe from topology-induced quantum fluctuations
Fang Xie, Lei Chen, Shouvik Sur +3
Recently, superconductivity has been observed in twisted WSe moiré structures (Xia et al., Nature 2024; Guo et al., Nature 2025). Its transition temperature is high, reaching a…
Chern Bands' Optimally Localized Wannier Functions and Fractional Chern Insulators
Fang Xie, Yuan Fang, Lei Chen +2
Recent development on fractional Chern insulators and proximate phases call for a real space representation of isolated Chern bands. Here we propose a new method for a general cons…