188 citations · 645 across the 43 of their papers we have counts for
9 papers · 1 filter
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…