110 citations · 476 across the 25 of their papers we have counts for
25 papers
Quantum-Geometry-Induced Superconductivity near a Fractional Chern Insulator
Haoyu Hu, Lei Chen
Recent moiré experiments and numerical studies of interacting Chern bands have revealed fractional Chern insulators, charge-density-wave order, and superconductivity as proximate c…
Electron correlations and superconductivity in LaNiO under pressure tuning
Zhiguang Liao, Lei Chen, Guijing Duan +4
Motivated by the recent discovery of superconductivity in LaNiO under pressure, we discuss the basic ingredients of a model that captures its microscopic physics under…
Asymmetric Transmission Through a Classical Analogue of the Aharonov-Bohm Ring
Lei Chen, Isabella L. Giovannelli, Nadav Shaibe +1
It has been predicted that new physics and technology are enabled for quantum systems that suffer from partial decoherence, in the intermediate range between coherent quantum evolu…
Reversible Non-Volatile Electronic Switching in a Near Room Temperature van der Waals Ferromagnet
Han Wu, Lei Chen, Paul Malinowski +37
The ability to reversibly toggle between two distinct states in a non-volatile method is important for information storage applications. Such devices have been realized for phase-c…
Metallic quantum criticality enabled by flat bands in a kagome lattice
Lei Chen, Fang Xie, Shouvik Sur +4
Strange metals arise in a variety of platforms for strongly correlated electrons, ranging from the cuprates, heavy fermions to flat band systems. Motivated by recent experiments in…
Correlated two-photon scattering in a one-dimensional waveguide coupled to two- or three-level giant atoms
Wenju Gu, He Huang, Zhen Yi +3
We study the two-photon scattering processes in a one-dimensional waveguide coupled to a two- or three-level giant atom, respectively. The accumulated phase shift between the two c…
Symmetry constraints and spectral crossing in a Mott insulator with Green's function zeros
Chandan Setty, Shouvik Sur, Lei Chen +5
Lattice symmetries are central to the characterization of electronic topology. Recently, it was shown that Green's function eigenvectors form a representation of the space group. T…
Extended Dynamical Mean Field Theory for Correlated Electron Models
Haoyu Hu, Lei Chen, Qimiao Si
An overarching question in strongly correlated electron systems is how the landscape of quantum phases emerges from electron correlations. The method of extended dynamical mean fie…
Quantum critical metals and loss of quasiparticles
Haoyu Hu, Lei Chen, Qimiao Si
Strange metals develop near quantum critical points in a variety of strongly correlated systems. Some of the issues that are central to the field include how the quantum-critical s…
Use of Transmission and Reflection Complex Time Delays to Reveal Scattering Matrix Poles and Zeros: Example of the Ring Graph
Lei Chen, Steven M. Anlage
We identify the poles and zeros of the scattering matrix of a simple quantum graph by means of systematic measurement and analysis of Wigner, transmission, and reflection complex t…
Topological semimetals without quasiparticles
Haoyu Hu, Lei Chen, Chandan Setty +8
The interplay between interactions and topology in quantum materials is of extensive current interest. Strong correlations are known to be important for insulating topological stat…
Unconventional Superconductivity from Fermi Surface Fluctuations in Strongly Correlated Metals
Haoyu Hu, Ang Cai, Lei Chen +4
In quantum materials, electrons that have strong correlations tend to localize, leading to quantum spins as the building blocks for low-energy physics. When strongly correlated ele…
Spin-singlet and spin-triplet pairing correlations in antiferromagnetically coupled Kondo systems
Haoyu Hu, Ang Cai, Lei Chen +1
Recent experiments in quantum critical heavy fermion metals have pushed to the fore the question about whether antiferromagnetic fluctuations can promote both spin-singlet and spin…
Topological Semimetal driven by Strong Correlations and Crystalline Symmetry
Lei Chen, Chandan Setty, Haoyu Hu +9
Electron correlations amplify quantum fluctuations and, as such, they have been recognized as the origin of a rich landscape of quantum phases. Whether and how they lead to gapless…
Statistics of Complex Wigner Time Delays as a counter of S-matrix poles: Theory and Experiment
Lei Chen, Steven M. Anlage, Yan V. Fyodorov
We study the statistical properties of the complex generalization of Wigner time delay for sub-unitary wave chaotic scattering systems. We first demonstrate theoretica…
Electron correlations and -breaking density wave order in a kagome metal
Chandan Setty, Haoyu Hu, Lei Chen +1
There have been extensive recent developments on kagome metals, such as TX (T= Fe, Co and X= Sn, Ge) and VSb ( Cs, K, Rb). An emerging issue is the nature of…
Generalization of Wigner Time Delay to Sub-Unitary Scattering Systems
Lei Chen, Steven M. Anlage, Yan V. Fyodorov
We introduce a complex generalization of Wigner time delay for sub-unitary scattering systems. Theoretical expressions for complex time delay as a function of excitation energy…
Fragile Insulator and Electronic Nematicity in a Graphene Moire System
Lei Chen, Haoyu Hu, Qimiao Si
Strongly correlated quantum matter exhibits a rich variety of remarkable properties, but the organizing principles that underlie the behavior remain to be established. Graphene het…
Perfect Absorption in Complex Scattering Systems with or without Hidden Symmetries
Lei Chen, Tsampikos Kottos, Steven M. Anlage
Wavefront shaping (WFS) schemes for efficient energy deposition in weakly lossy targets is an ongoing challenge for many classical wave technologies relevant to next-generation tel…
Dark-bright solitons in spinor polariton condensates under nonresonant pumping
Xingran Xu, Lei Chen, Zhidong Zhang +1
Adopting a mean-field Gross-Pitaevskii description for a spinor polariton Bose-Einstein condensates under non-resonant pumping, we investigate the static and dynamical properties o…
Non-equilibrium dynamics of an ultracold Bose gas under a multi-pulsed quantum quench in interaction
Lei Chen, Zhidong Zhang, Zhaoxin Liang
We investigate the nonequilibrium dynamical properties of a weakly-interacting Bose gas at zero temperature under the multi-pulsed quantum quench in interaction by calculating one-…
Unusual behavior of sound velocity of a Bose gas in an optical superlattice at quasi-one-dimension
Lei Chen, Zhu Chen, Wu Li +2
A Bose gas trapped in a one-dimensional optical superlattice has emerged as a novel superfluid characterized by tunable lattice topologies and tailored band structures. In this wor…
Probing Sound Speed of an Optically-Trapped Bose Gas with Periodically Modulated Interactions by Bragg Spectroscopy
Lei Chen, Wu Li, Zhu Chen +2
A Bose-Einstein condensate (BEC) with periodically modulated interactions (PMI) has emerged as a novel kind of periodic superfluid, which has been recently experimentally created u…
Quench Dynamics of Three-Dimensional Disordered Bose Gases: Condensation, Superfluidity and Fingerprint of Dynamical Bose Glass
Lei Chen, Zhaoxin Liang, Ying Hu +1
In an equilibrium three-dimensional (3D) disordered condensate, it's well established that disorder can generate an amount of normal fluid equaling to of the condensa…