168 citations · 825 across the 36 of their papers we have counts for
36 papers
Extreme topological tunability of Weyl-Kondo semimetal to Zeeman coupling
Sarah E. Grefe, Hsin-Hua Lai, Silke Paschen +1
There is considerable interest in the intersection of correlations and topology, especially in metallic systems. Among the outstanding questions are how strong correlations drive n…
Weyl-Kondo Semimetal: Towards Control of Weyl Nodes
Sarah E. Grefe, Hsin-Hua Lai, Silke Paschen +1
Heavy fermion semimetals represent a promising setting to explore topological metals driven by strong correlations. In this paper, we i) summarize the theoretical results in a Weyl…
Density Matrix Renormalization Group Study of Nematicity in Two Dimensions: Application to a Spin- Bilinear-Biquadratic Model on the Square Lattice
Wen-Jun Hu, Shou-Shu Gong, Hsin-Hua Lai +2
Nematic order is an exotic property observed in several strongly correlated systems, such as the iron-based superconductors. Using large-scale density matrix renormalization group…
Weyl-Kondo semimetals in nonsymmorphic systems
Sarah E. Grefe, Hsin-Hua Lai, Silke Paschen +1
There is considerable current interest to explore electronic topology in strongly correlated metals, with heavy fermion systems providing a promising setting. Recently, a Weyl-Kond…
Plaquette instability competing with bicollinear ground state in detwinned FeTe
David W. Tam, Hsin-Hua Lai, Jin Hu +10
We use inelastic neutron scattering to show that long-range spin waves arising from the static bicollinear antiferromagnetic (AF) order in FeTe, which have twofold rotational symme…
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…
Fractionalized Excitations Revealed by Entanglement Entropy
Wen-Jun Hu, Yi Zhang, Andriy H. Nevidomskyy +3
Fractionalized excitations develop in many unusual many-body states such as quantum spin liquids, disordered phases that cannot be described using any local order parameter. Becaus…
Giant spontaneous Hall effect in a nonmagnetic Weyl-Kondo semimetal
Sami Dzsaber, Xinlin Yan, Mathieu Taupin +9
Nontrivial topology in condensed matter systems enriches quantum states of matter, to go beyond either the classification into metals and insulators in terms of conventional band t…
Kondo Destruction and Multipolar Order-- Implications for Heavy Fermion Quantum Criticality
Hsin-Hua Lai, Emilian M. Nica, Wen-Jun Hu +3
Quantum criticality beyond the Landau paradigm represents a fundamental problem in condensed matter and statistical physics. Heavy fermion systems with multipolar degrees of freedo…
Spin-isotropic continuum of spin excitations in antiferromagnetically ordered FeTe
Yu Song, Xingye Lu, L. -P. Regnault +5
Unconventional superconductivity typically emerges in the presence of quasi-degenerate ground states, and the associated intense fluctuations are likely responsible for generating…
Nematic Spin Liquid Phase in a Frustrated Spin-1 System on the Square Lattice
Wen-Jun Hu, Shou-Shu Gong, Hsin-Hua Lai +3
Frustration in quantum spin systems promote a variety of novel quantum phases. An important example is the frustrated spin- model on the square lattice with the nearest-neighbor…
Sequential localization of a complex electron fluid
V. Martelli, A. Cai, E. M. Nica +13
Complex and correlated quantum systems with promise for new functionality often involve entwined electronic degrees of freedom. In such materials, highly unusual properties emerge…
Weyl-Kondo Semimetal in Heavy Fermion Systems
Hsin-Hua Lai, Sarah E. Grefe, Silke Paschen +1
Insulating states can be topologically nontrivial, a well-established notion that is exemplified by the quantum Hall effect and topological insulators. By contrast, topological met…
Frustrated magnetism and bicollinear antiferromagnetic order in FeTe
Hsin-Hua Lai, Shou-Shu Gong, Wen-Jun Hu +1
Iron chalcogenides display a rich variety of electronic orders in their phase diagram. A particularly enigmatic case is FeTe, a metal which possesses co-existing hole and electron…
Quantum Transitions of Nematic Phases in a Spin- Bilinear-Biquadratic Model and Their Implications for FeSe
Wen-Jun Hu, Hsin-Hua Lai, Shou-Shu Gong +3
Since its discovery, iron-based superconductivity has been known to develop near an antiferromagnetic order, but this paradigm fails in the iron chalcogenide FeSe, whose single-lay…
Antiferroquadrupolar order and rotational symmetry breaking in a generalized bilinear-biquadratic model on a square lattice
Hsin-Hua Lai, Wen-Jun Hu, Emilian M. Nica +2
The magnetic and nematic properties of the iron chalcogenides have recently been the subject of intense interest. Motivated by the proposed antiferroquadrupolar and Ising-nematic o…
Probing Critical Surfaces in Momentum Space Using Real-Space Entanglement Entropy: Bose versus Fermi
Hsin-Hua Lai, Kun Yang
A co-dimension one critical surface in the momentum space can be either a familiar Fermi surface, which separates occupied states from empty ones in the non-interacting fermion cas…
Relaxation of a Goldstino-like mode due to supersymmetry breaking in Bose-Fermi mixtures
Hsin-Hua Lai, Kun Yang
In the presence of nonrelativistic supersymmetry, a sharp fermionic collective mode similar to the Goldstino mode in high-energy physics was proposed to be realized in Bose-Fermi m…
Correlation effects in double-Weyl semimetals
Hsin-Hua Lai
We study the long-range Coulomb interaction effects on the double-Weyl fermion system which is possibly realized in the three dimensional semimetal HgCrSe in the ferromagne…
Short-ranged interaction effects on topological phase transitions: The perturbative mean-field method
Hsin-Hua Lai, Hsiang-Hsuan Hung
Time-reversal symmetric topological insulator is a novel state of matter that a bulk-insulating state carries dissipationless spin transport along the surfaces, embedded by the $Z_…
Disordered and interacting parabolic semimetals in two and three dimensions
Hsin-Hua Lai, Bitan Roy, Pallab Goswami
A clean noninteracting parabolic semimetal is characterized by quadratic band touching between the conduction and the valence bands at isolated diabolic points in the Brillouin zon…
Entanglement Entropy Scaling Laws and Eigenstate Typicality in Free Fermion Systems
Hsin-Hua Lai, Kun Yang
We demonstrate that the entanglement entropy area law for free fermion ground states and the corresponding volume law for highly excited states are related by a position-momentum d…
Short-ranged interaction effects on topological phase transitions
Hsin-Hua Lai, Hsiang-Hsuan Hung, Gregory A. Fiete
Using a combined perturbative and self-consistent mean-field approach that we directly compare with quantum Monte Carlo calculations, we study the effects of short-ranged interacti…
Effects of short-ranged interactions on the Kane-Mele model without discrete particle-hole symmetry
Hsin-Hua Lai, Hsiang-Hsuan Hung
We study the effects of short-ranged interactions on the topological insulator phase, also known as the quantum spin Hall phase, in the Kane-Mele model at half-filling with s…