50 citations · 121 across the 20 of their papers we have counts for
21 papers
ActICL: Post-Training for Agentic Multimodal In-Context Learning
Yanshu Li, Ruixiang Tang, Junyi Jessy Li +1
Multimodal in-context learning (ICL) is an important capability of multimodal large language models (MLLMs). Its performance is closely tied to the demonstrations it uses, making d…
Quantum Fisher information of magnetic quantum phase transition on Kondo lattice
Yuan Fang, Lei Chen, Mounica Mahankali +4
Strange metals exemplify highly collective quantum many-body systems that call for new means of characterization, and there is considerable potential for quantum information approa…
Nonperturbative Nonlinear Hall Effect in Nonequilibrium Steady States
Lei Geng, Martin Eckstein, Lei Chen +4
The nonlinear Hall effect in quantum materials has attracted broad interest, yet most existing studies focus on the weak-field, perturbative regime. Here we develop a nonperturbati…
Kondo destruction quantum critical point: fixed point annihilation and thermodynamic stability
Yiming Wang, Lei Chen, Haoyu Hu +4
A wide range of strongly correlated electron systems exhibit strange metallicity, and they are increasingly recognized as in proximity to correlation-driven localization-delocaliza…
Emergent heavy-fermion physics in a new family of topological insulators RAsS (R = Y, La, and Sm)
Iñigo Robredo, Yuan Fang, Lei Chen +10
Realizing topological phases in strongly correlated materials has become a major impetus in condensed matter physics. Although many compounds are now classified as topological insu…
Correlated flat-band physics in a bilayer kagome metal based on compact molecular orbitals
Mounica Mahankali, Fang Xie, Yuan Fang +11
Flat bands, when located close to the Fermi energy, can considerably enhance the influence of electron correlations on the low energy physics in kagome and other frustrated-lattice…
Resolving the Kagome Origin of the Strange Metallicity in NiIn
Jean C. Souza, Moshe Haim, Ambikesh Gupta +15
Strong correlations promote singular properties such as strange metallicity, which shows considerable commonality across quantum materials platforms. Understanding the mechanism fo…
Orbital-selective correlation effects and superconducting pairing symmetry in a multiorbital - model for bilayer nickelates
Guijing Duan, Zhiguang Liao, Lei Chen +3
The recent discovery of superconductivity in LaNiO raises key questions about its mechanism and the nature of pairing symmetry. This system is believed to be described…
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…
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…
Topological Kondo semimetals emulated in hetero-bilayer transition metal dichalcogenides
Fang Xie, Lei Chen, Yuan Fang +1
The moiré structure of AB-stacked represents a natural platform to realize Kondo lattice models, due to the discrepancy of the bandwidth between the individual…
Electron correlations in the kagome flat band metal
Fang Xie, Yuan Fang, Ying Li +7
Kagome metals offer a unique platform for investigating robust electron-correlation effects because of their lattice geometry, flat bands and multi-orbital nature. In the cases wit…
Magnetic Weyl-Kondo semimetals induced by quantum fluctuations
Yuan Fang, Lei Chen, Andrey Prokofiev +5
Weyl-Kondo semimetals are strongly correlated topological semimetals that develop through the cooperation of the Kondo effect with space group symmetries. The Kondo effect, capturi…
Amplified multipartite entanglement witnessed in a quantum critical metal
Yuan Fang, Mounica Mahankali, Yiming Wang +4
Strong correlations in matter promote a landscape of quantum phases and associated quantum critical points. For metallic systems, there is increasing recognition that the quantum c…
Dirac zeros in an orbital selective Mott phase: Green's function Berry curvature and flux quantization
Lei Chen, Haoyu Hu, Maia G. Vergniory +2
How electronic topology develops in strongly correlated systems represents a fundamental challenge in the field of quantum materials. Recent studies have advanced the characterizat…
Topological Diagnosis of Strongly Correlated Electron Systems
Chandan Setty, Fang Xie, Shouvik Sur +5
The intersection of electronic topology and strong correlations offers a rich platform to discover exotic quantum phases of matter and unusual materials. An overarching challenge t…
Non-Fermi liquid behavior in a correlated flatband pyrochlore lattice
Jianwei Huang, Lei Chen, Yuefei Huang +14
Electronic correlation effects are manifested in quantum materials when either the onsite Coulomb repulsion is large or the electron kinetic energy is small. The former is the domi…
Kondo effect and its destruction in hetero-bilayer transition metal dichalcogenides
Fang Xie, Lei Chen, Qimiao Si
Moiré structures, along with line-graph-based -electron systems, represent a setting to realize flat bands. One form of the associated strong correlation physics is the Kondo ef…
Nematic and Antiferromagnetic Quantum Criticality in a Multi-Orbital Hubbard Model for Iron Pnictides
Wen-Jun Hu, Haoyu Hu, Rong Yu +4
The extent to which quantum criticality drives the physics of iron pnictides is a central question in the field. Earlier theoretical considerations were based on an effective field…