74 citations · 534 across the 38 of their papers we have counts for
38 papers
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…
Dual-use quantum hardware for quantum resource generation and energy storage
Vaibhav Sharma, Yiming Wang, Shouvik Sur
Efficient generation of quantum resources is a central objective of modern quantum technological platforms. Independently, quantum batteries have emerged as nanoscale devices that…
Perturbative Kondo destruction and global phase diagram of heavy fermion metals
Yiming Wang, Shouvik Sur, Chia-Chuan Liu +1
Strange metals represent a foundational problem in quantum condensed matter physics, and heavy fermion systems provide a canonical setting to advance a general understanding. The c…
Amplified response of cavity-coupled quantum-critical systems
Shouvik Sur, Yiming Wang, Mounica Mahankali +2
A quantum critical point develops when matter undergoes a continuous transformation between distinct ground states at absolute zero. It hosts pronounced quantum fluctuations, which…
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…
Nonlinear thermal and thermoelectric transport from quantum geometry
Yuan Fang, Shouvik Sur, Yonglong Xie +1
Quantum geometry may enable the development of quantum phases ranging from superconductivity to correlated topological states. One powerful probe of quantum geometry is the nonline…
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…
Correlated Hopf insulators
Konstantinos Ladovrechis, Shouvik Sur
Hopf insulators represent an exceptional class of topological matter unanticipated by the periodic table of topological invariants. These systems point to the existence of previous…
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…
Cubic Dirac Semimetals: General Theory and Application to Rare-Earth Magnets
Shouvik Sur, Chandan Setty
Rare-earth magnets with parent cubic symmetry exhibit unique topological properties. However, the origin of these behaviors remains presently unclear. Here, we develop minimal mode…
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…
Shot noise in coupled electron-boson systems
Yiming Wang, Shouvik Sur, Chandan Setty +2
The nature of charge carriers in strange metals has become a topic of intense current investigation. Recent shot noise measurements in the quantum critical heavy fermion metal YbRh…
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…
Particle-hole asymmetric phases in doped twisted bilayer graphene
Run Hou, Shouvik Sur, Lucas K. Wagner +1
Despite much theoretical work, developing a comprehensive ab initio model for twisted bilayer graphene (TBG) has proven challenging due to the inherent trade-off between accurately…
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…
Electronic properties, correlated topology and Green's function zeros
Chandan Setty, Fang Xie, Shouvik Sur +3
There is extensive current interest about electronic topology in correlated settings. In strongly correlated systems, contours of Green's function zeros may develop in frequency-mo…
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…
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.…
Dipolar Weyl semimetals
Alexander C. Tyner, Shouvik Sur
In time-reversal symmetry-broken Weyl semimetals, Weyl points act as monopoles and antimonopoles of the Berry curvature, with a monopole-antimonopole pair producing a net zero Berr…
Shot noise and universal Fano factor as characterization of strongly correlated metals
Yiming Wang, Chandan Setty, Shouvik Sur +4
Shot noise measures out-of-equilibrium current fluctuations and is a powerful tool to probe the nature of current-carrying excitations in quantum systems. Recent shot noise measure…
Field induced non-BEC transitions in frustrated magnets
Shouvik Sur, Yi Xu, Shuyi Li +2
Frustrated spin-systems have traditionally proven challenging to understand, owing to a scarcity of controlled methods for their analyses. By contrast, under strong magnetic fields…
Shot noise in a strange metal
Liyang Chen, Dale T. Lowder, Emine Bakali +12
Strange-metal behavior has been observed in materials ranging from high-temperature superconductors to heavy fermion metals. In conventional metals, current is carried by quasipart…