188 citations · 645 across the 43 of their papers we have counts for
43 papers
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…
Suppression of shot noise at a Kondo destruction quantum critical point
Yiming Wang, Shouvik Sur, Fang Xie +4
Strange metal behavior has been observed in an expanding list of quantum materials, with heavy fermion metals serving as a prototype setting. Among the intriguing questions is the…
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…
PbCu(PO4)(OH): Phonon bands, Localized Flat Band Magnetism, Models, and Chemical Analysis
Yi Jiang, Scott B. Lee, Jonah Herzog-Arbeitman +12
In a series of recent reports, doped lead apatite (LK-99) has been proposed as a candidate ambient temperature and pressure superconductor. However, from both an experimental and t…
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…
Kagome Materials I: SG 191, ScVSn. Flat Phonon Soft Modes and Unconventional CDW Formation: Microscopic and Effective Theory
Haoyu Hu, Yi Jiang, Dumitru Călugăru +6
Kagome Materials with flat bands exhibit wildly different physical properties depending on symmetry group, and electron number. For the case of ScVSn in space group 191, we…
Observation of Kondo lattice and Kondo-enhanced anomalous Hall effect in an itinerant ferromagnet
Zi-Jia Cheng, Yuqing Huang, Pengyu Zheng +20
The interplay between Kondo screening and magnetic interactions is central to comprehending the intricate phases in heavy-fermion compounds. However, the role of the itinerant magn…
Kondo Lattice Model of Magic-Angle Twisted-Bilayer Graphene: Hund's Rule, Local-Moment Fluctuations, and Low-Energy Effective Theory
Haoyu Hu, B. Andrei Bernevig, Alexei M. Tsvelik
We apply a generalized Schrieffer-Wolff transformation to the extended Anderson-like topological heavy fermion (THF) model for the magic-angle twisted bilayer gr…
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…
Emergent flat band and topological Kondo semimetal driven by orbital-selective correlations
Lei Chen, Fang Xie, Shouvik Sur +4
Flat electronic bands are expected to show proportionally enhanced electron correlations, which may generate a plethora of novel quantum phases and unusual low-energy excitations.…
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…
Coupled topological flat and wide bands: Quasiparticle formation and destruction
Haoyu Hu, Qimiao Si
Flat bands amplify correlation effects and are of extensive current interest. They provide a platform to explore both topology in correlated settings and correlation physics enrich…
Kondo destruction and fixed-point annihilation in a Bose-Fermi Kondo model
Haoyu Hu, Qimiao Si
Quantum criticality that goes beyond the Landau framework of order-parameter fluctuations is playing a central role in elucidating the behavior of strange metals. A prominent case…
Dynamical Planckian scaling of charge response at a particle-hole-asymmetric quantum critical point with Kondo destruction
Ananth Kandala, Haoyu Hu, Qimiao Si +1
Metallic quantum criticality is a central theme in a variety of strongly correlated systems. Recent experiments have raised the fundamental question of how the charge response can…
Cohomological boundedness for flat bundles on surfaces and applications
Haoyu Hu, Jean-Baptiste Teyssier
This paper explores the cohomological consequences of the existence of moduli spaces for flat bundles with bounded rank and irregularity at infinity and gives unconditional proofs.…
Orbital-selective Mott phase as a dehybridization fixed point
Haoyu Hu, Lei Chen, Jian-Xin Zhu +2
Studies on the iron-based superconductors and related strongly correlated systems have focused attention on bad-metal normal state in proximity to antiferromagnetic order. An orbit…
Electron correlations and charge density wave in the topological kagome metal FeGe
Chandan Setty, Christopher A. Lane, Lei Chen +3
Charge order in kagome metals is of extensive current interest. Recently, a charge density wave was discovered in the magnetic binary kagome metal FeGe. In analogy to its predecess…
Multiorbital spin-triplet pairing and spin resonance in the heavy-fermion superconductor
Lei Chen, Haoyu Hu, Christopher Lane +3
The heavy-fermion system is a candidate for spin-triplet superconductivity, which is of considerable interest to quantum engineering. Among the outstanding issues…
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…