81 citations · 326 across the 18 of their papers we have counts for
19 papers
Revisiting quadratic band crossing: from interaction-driven instability to intrinsic topology
Yadong Jiang, Linghao Huang, Zhaochen Liu +2
The realization of robust quantum anomalous Hall (QAH) phases at elevated temperatures remains a central challenge in condensed matter physics. While quadratic band crossing points…
Unveiling the impact of anti-site defects in magnetic transitions of few-layer MnBi2Te4 by operando heating
Xinyu Chen, Jingjing Gao, Shuang Wu +11
As the first experimentally discovered intrinsic magnetic topological insulator, MnBi2Te4 has attracted widespread attentions, providing a unique platform for the exploration of to…
Quantized Topological States and Parity Anomaly in Intrinsic Quantum Anomalous Hall Insulator MnBi2Te4
Zhongxun Guo, Jingjing Gao, Zhiwei Huang +22
When thinned down to just a few atomic layers, the layered magnetic topological insulator MnBi2Te4 offers an exceptional platform for exploring a wide range of topological phenomen…
Anisotropic moiré band flattening in twisted bilayers of M-valley MXenes
Kejie Bao, Huan Wang, Zhaochen Liu +1
Experimental studies on moiré materials have predominantly focused on twisted hexagonal lattice with low-energy states near the - or K-points, where the electronic dispersion is…
Orbital Description of Landau Levels
Huan Wang, Rui Shi, Zhaochen Liu +1
The pursuit of a lattice analogue for Landau levels has been a central theme in condensed matter physics. Although the correspondence between Chern bands and the lowest Landau leve…
Layer-Dependent Quantum Anomalous Hall Effect in Rhombohedral Graphene
Zhaochen Liu, Jing Wang
The quantum anomalous Hall (QAH) effect, first proposed in the Haldane model, is a paradigmatic example of the application of band topology in condensed matter physics. The recent…
Josephson Diode Effect in Topological Superconductor
Zhaochen Liu, Linghao Huang, Jing Wang
We investigate the Josephson diode effect (JDE) in topological Josephson junctions. By both analytic and numerical calculations, we find that while a Josephson junction in the topo…
Giant anisotropic band flattening in twisted valley semiconductor bilayers
Huan Wang, Zhaochen Liu, Yadong Jiang +1
We propose a general theory of anisotropic band flattening in moiré systems at the valley. For a two-dimensional semiconductor with a rectangular unit cell of or mirro…
Monolayer V2MX4: A new family of quantum anomalous Hall insulators
Yadong Jiang, Huan Wang, Kejie Bao +2
We theoretically propose that the van der Waals layered ternary transition metal chalcogenide V ( W, Mo; S, Se) is a new family of quantum anomalous Hall insulato…
Moiré Engineering and Topological Flat Bands in Twisted Orbital-Active Bilayers
Huan Wang, Yadong Jiang, Zhaochen Liu +1
Topological flat bands at the Fermi level offer a promising platform to study a variety of intriguing correlated phase of matter. Here we present band engineering in the twisted or…
Planar magnetic texture on the surface of a topological insulator
Zhaochen Liu, Jing Wang, Congjun Wu
We study the planar magnetic textures in an insulating magnetic film coupled to the Dirac surface state of a topological insulator. It is shown that the radial vortex with winding…
Dissipative Edge Transport in Disordered Axion Insulator Films
Zhaochen Liu, Dongheng Qian, Yadong Jiang +1
We investigate the role of disorder in the edge transport of axion insulator films. We predict by first-principles calculations that even-number-layer MnBiTe have gapped he…
Unoccupied Topological Surface State in MnBiTe
Yadong Jiang, Zhaochen Liu, Jing Wang
The unoccupied part of the band structure in the magnetic topological insulator MnBiTe is studied by first-principles calculations. We find a second, unoccupied topological…
Magnetic moiré surface states and flat chern band in topological insulators
Zhaochen Liu, Huan Wang, Jing Wang
We theoretically study the effect of magnetic moiré superlattice on the topological surface states by introducing a continuum model of Dirac electrons with a single Dirac cone movi…
Dynamical magnetoelectric coupling in axion insulator thin films
Zhaochen Liu, Jiang Xiao, Jing Wang
Axion insulator is an exotic magnetic topological insulator with zero Chern number but a nonzero quantized Chern-Simons magnetoelectric coupling. A conclusive experimental evidence…
Intrinsic topological phases in MnBiTe tuned by the layer magnetization
Yue Li, Yadong Jiang, Jinlong Zhang +3
The interplay between band topology and magnetic order could generate a variety of time-reversal-breaking gapped topological phases with exotic topological quantization phenomena,…
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…
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…