35 citations · 114 across the 22 of their papers we have counts for
22 papers
First-Order Topological FFLO Transition and Superconducting Diode Sign Reversal in Altermagnetic Nanowires
Bo Fu, Kaizhi Bai, Chang-An Li +1
Fulde-Ferrell-Larkin-Ovchinnikov (FFLO) state conventionally emerges via a second-order phase transition driven by finite magnetization. Here we show that a spin-orbit-coupled nano…
Suppression of Extrinsic Anomalous Hall Conductivity in Disordered Parity Anomalous Semimetal
Shi-Hao Bi, Bo Fu, Shun-Qing Shen
We present an analytical investigation of the extrinsic contributions to the anomalous Hall conductivity in the context of the half-quantized Hall effect observed in disordered par…
Nearly semi-elliptic relation between the minimal conductivity and Hall conductivity in unpaired Dirac fermions
Bo Fu, Kai-Zhi Bai, Shi-Hao Bi +1
Electric conductivities may reveal the topological and magnetic properties of band structures in solids, especially for two-dimensional unpaired Dirac fermions. In this work, we ev…
Parity Anomalous Semimetal with Minimal Conductivity Induced by an In-Plane Magnetic Field
Binbin Wang, Jiayuan Hu, Bo Fu +5
The interplay between topological materials and local symmetry breaking gives rise to diverse topological quantum phenomena. A notable example is the parity anomalous semimetal (PA…
Absence of Parity Anomaly in Massive Dirac Fermions on a Lattice
Shun-Qing Shen
The parity anomaly for Dirac fermions in two spatial dimensions has shaped perspectives in quantum field theory and condensed matter physics. In condensed matter it has evolved as…
Reinterpretation of chiral anomaly on a lattice
Huan-Wen Wang, Bo Fu, Shun-Qing Shen
The chiral anomaly is a quantum mechanical effect for massless Dirac fermions in both particle physics and condensed matter physics. Here we present a set of effective models for s…
Half-Quantized Hall Metal and Marginal Metal in Disordered Magnetic Topological Insulators
Shi-Hao Bi, Bo Fu, Shun-Qing Shen
A semimagnetic topological insulator -- a heterostructure combining a topological insulator with a ferromagnet -- exhibits a half-quantized Hall effect, characterized by a quantize…
Quantum Geometric Renormalization of the Hall Coefficient and Unconventional Hall Resistivity in ZrTe5
Huimin Xie, Bo Fu, Huan-Wen Wang +2
The anomalous Hall effect (AHE), conventionally associated with time-reversal symmetry breaking in ferromagnetic materials, has recently been observed in nonmagnetic topological ma…
Ferroelectrically Switchable Half-Quantized Hall Effect
M. U. Muzaffar, Kai-Zhi Bai, Wei Qin +5
Integrating ferroelectricity, antiferromagnetism, and topological quantum transport within a single material is rare, but crucial for developing next-generation quantum devices. He…
Ferroelectrically Switchable Chirality in Topological Superconductivity
Kai-Zhi Bai, Bo Fu, Shun-Qing Shen
The interplay between ferroelectricity, magnetism, and superconductivity provides a rich platform for discovering novel quantum phenomena. Here, we develop an effective theory and…
1/2 Z Topological Invariants and the Half Quantized Hall Effect
Bo Fu, Shun-Qing Shen
The half-quantized Hall phase represents a unique metallic or semi-metallic state of matter characterized by a fractional quantum Hall conductance, precisely half of an integer …
Disordered Parity Anomalous Semimetal
Shi-Hao Bi, Bo Fu, Shun-Qing Shen
The parity anomalous semimetal is a topological state of matter characterized by its semi-metallic nature and a quantum Hall conductance of one-half ( is the elementar…
Dirac Fermions and Topological Phases in Magnetic Topological Insulator Films
Kai-Zhi Bai, Bo Fu, Shun-Qing Shen
We develop a Dirac fermion theory for topological phases in magnetic topological insulator films. The theory is based on exact solutions of the energies and the wave functions for…
Half Quantum Mirror Hall Effect
Bo Fu, Kai-Zhi Bai, Shun-Qing Shen
We report the discovery of the half-quantized mirror Hall effect, a novel quantum-anomaly induced by mirror symmetry in a strong topological insulator (TI) film. These films are kn…
Metallic Quantized Anomalous Hall Effect without Chiral Edge States
Kai-Zhi Bai, Bo Fu, Zhenyu Zhang +1
The quantum anomalous Hall effect (QAHE) is a topological state of matter with a quantized Hall resistance. It has been observed in some two-dimensional insulating materials such a…
Signature of Parity Anomaly: Crossover from One Half to Integer Quantized Hall Conductance in a Finite Magnetic Field
Huan-Wen Wang, Bo Fu, Shun-Qing Shen
The pursuit of understanding parity anomaly in condensed matter systems has led to significant advancements in both theoretical and experimental research in recent years. In this s…
Theory of anomalous Hall effect in transition-metal pentatelluride and
Huan-Wen Wang, Bo Fu, Shun-Qing Shen
The anomalous Hall effect has considerable impact on the progress of condensed matter physics and occurs in systems with time-reversal symmetry breaking. Here we theoretically inve…
A Solvable Model for Discrete Time Crystal Enforced by Nonsymmorphic Dynamical Symmetry
Zi-Ang Hu, Bo Fu, Xiao Li +1
Discrete time crystal is a class of nonequilibrium quantum systems exhibiting subharmonic responses to external periodic driving. Here we propose a class of discrete time crystals…
On the half-quantized Hall conductance of massive surface electrons in magnetic topological insulator films
Rui Chen, Shun-Qing Shen
In topological insulators, massive surface bands resulting from local symmetry breaking are believed to exhibit a half-quantized Hall conductance. However, such scenarios are obvio…
Anomalous Coherence Length of Majorana Zero Modes at Vortices in Superconducting Topological Insulators
Bo Fu, Shun-Qing Shen
The coherence length of two Majorana zero energy modes in a p-wave topological superconductor is inversely proportional to the superconducting order parameter. We studied the finit…
Half-Quantized Hall Effect at the Parity-Invariant Fermi Surface
Jin-Yu Zou, Rui Chen, Bo Fu +3
Condensed matter realization of a single Dirac cone of fermions in two dimensions is a long-standing issue. Here we report the discovery of a single gapless Dirac cone of half-quan…
Signature of parity anomaly in the measurement of optical Hall conductivity in quantum anomalous Hall systems
Zi-Ang Hu, Huan-Wen Wang, Bo Fu +2
Parity anomaly is a quantum mechanical effect that the parity symmetry in a two-dimensional classical action is failed to be restored in any regularization of the full quantum theo…