35 citations · 114 across the 22 of their papers we have counts for
8 papers · 1 filter
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…