147 citations · 568 across the 26 of their papers we have counts for
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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…
Disorder Effects on the Quasiparticle and Transport Properties of Two-Dimensional Dirac Fermionic Systems
Bo Fu, Yanru Chen, Weiwei Chen +5
Despite extensive existing studies, a complete understanding of the role of disorder in affecting the physical properties of two-dimensional Dirac fermionic systems remains a stand…
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…
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…
Quantum Anomalous Semimetals
Bo Fu, Jin-Yu Zou, Zi-Ang Hu +2
The topological states of matter and topological materials have been attracting extensive interests as one of the frontier topics in condensed matter physics and materials science…
Half-Quantized Hall Effect and Power Law Decay of Edge Current Distribution
Jin-Yu Zou, Bo Fu, Huan-Wen Wang +2
The half-quantized Hall conductance is characteristic of quantum systems with parity anomaly. Here we investigate topological and transport properties of a class of parity anomalou…
Fractional Electromagnetic Response in Three-Dimensional Chiral Anomalous Semimetal
Huan-Wen Wang, Bo Fu, Jin-Yu Zou +2
The magnetoelectric coupling of electrons in a three-dimensional solid can be effectively described by axion electrodynamics. Here we report the discovery of the fractional magneto…
Tailoring Quadrupole Topological Insulators with Periodic Driving and Disorder
Zhen Ning, Bo Fu, Dong-Hui Xu +1
The quadrupole topological insulator (QTI) has attracted intense studies as a prototype of symmetry-protected higher-order topological phases of matter with a quantized quadrupole…
On the sample-dependent minimal conductivity in weakly disordered graphene
Weiwei Chen, Yedi Shen, Bo Fu +2
We present a unified understanding of the experimentally observed minimal dc conductivity in weakly disordered graphene. Firstly, based on linear response theory, we reveal that ra…
Helical Symmetry Breaking and Quantum Anomaly in Massive Dirac Fermions
Huan-Wen Wang, Bo Fu, Shun-Qing Shen
Helical symmetry of massive Dirac fermions is broken explicitly in the presence of electric and magnetic fields. Here we present two equations for the divergence of helical and axi…
The Bulk-Hinge Correspondence and Three-Dimensional Quantum Anomalous Hall Effect in Second Order Topological Insulators
Bo Fu, Zi-Ang Hu, Shun-Qing Shen
The chiral hinge modes are the key feature of a second order topological insulator in three dimensions. Here we propose a quadrupole index in combination of a slab Chern number in…
Topological Phase Transitions in Disordered Electric Quadrupole Insulators
Chang-An Li, Bo Fu, Zi-Ang Hu +2
We investigate disorder-driven topological phase transitions in quantized electric quadrupole insulators. We show that chiral symmetry can protect the quantization of the quadrupol…
Dirac Polarons and Resistivity Anomaly in ZrTe5 and HfTe5
Bo Fu, Huan-Wen Wang, Shun-Qing Shen
Resistivity anomaly, a sharp peak of resistivity at finite temperatures, in the transition-metal pentatellurides ZrTe5 and HfTe5 was observed four decades ago, and more exotic and…
Anomalous Temperature Dependence of Quantum Correction to the Conductivity of Magnetic Topological Insulators
Huan-Wen Wang, Bo Fu, Shun-Qing Shen
Quantum transport in magnetic topological insulators reveals the strong interplay between the magnetism and topology of electronic band structures. A recent experiment on magnetica…
Quantum Diffusive Magneto-transport in Massive Dirac Materials with Chiral Symmetry Breaking
Bo Fu, Huan-Wen Wang, Shun-Qing Shen
Massive Dirac fermions break the chiral symmetry explicitly and also make the Berry curvature of the band structure non-Abelian. By utilizing the Green's function technique, we dev…
Phonon Confinement and Transport in Ultrathin Films
Bo Fu, Kevin D. Parrish, Hyun-Young Kim +2
Thermal transport by phonons in films with thicknesses of less than 10 nm is investigated in a soft system (Lennard-Jones argon) and a stiff system (Tersoff silicon) using two-dime…
Quantum Interference Theory of Magnetoresistance in Dirac Materials
Bo Fu, Huan-Wen Wang, Shun-Qing Shen
Magnetoresistance in many samples of Dirac semimetal and topological insulator displays non-monotonic behaviors over a wide range of magnetic field. Here a formula of magnetoconduc…