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Anisotropic topological magnetoelectric effect in axion insulators
Zhaochen Liu, Jing Wang
Three-dimensional topological insulators or axion insulators exhibit the topological magnetoelectric effect, which is isotropic with a universal coefficient of proportionality quan…
Flat Chern Band From Twisted Bilayer MnBiTe
Biao Lian, Zhaochen Liu, Yuanbo Zhang +1
We construct a continuum model for the Moiré superlattice of twisted bilayer MnBiTe, and study the band structure of the bilayer in both ferromagnetic (FM) and antiferromag…
Dynamical axion state with hidden pseudospin Chern numbers in MnBiTe-based heterostructures
Huaiqiang Wang, Dinghui Wang, Zhilong Yang +5
Axion is a hypothetical elementary particle which was initially postulated to solve the charge conjugation-parity problem in particle physics. Interestingly, the axion state has em…
In-Plane Magnetic-Field-Induced Quantum Anomalous Hall Plateau Transition
Jinlong Zhang, Zhaochen Liu, Jing Wang
We study the critical properties of the in-plane magnetic field-induced quantum anomalous Hall (QAH) plateau transition in axion insulators. Take even septuple layer film MnBiT…
Large dynamical axion field in topological antiferromagnetic insulator MnBiTe
Jinlong Zhang, Dinghui Wang, Minji Shi +3
The dynamical axion field is a new state of quantum matter where the magnetoelectric response couples strongly to its low-energy magnetic fluctuations. It is fundamentally differen…
Magnetic-field-induced quantized anomalous Hall effect in intrinsic magnetic topological insulator MnBiTe
Yujun Deng, Yijun Yu, Meng Zhu Shi +3
In a magnetic topological insulator, nontrivial band topology conspires with magnetic order to produce exotic states of matter that are best exemplified by quantum anomalous Hall (…