236 citations · 1.5k across the 46 of their papers we have counts for
7 papers · 1 filter
Hinged Quantum Spin-Hall Effect in Antiferromagnetic Topological Insulators
Yue-Ran Ding, Dong-Hui Xu, Chui-Zhen Chen +1
In this work, we predict a hinged quantum spin-Hall (HQSH) effect featured by a pair of helical hinge modes in antiferromagnetic (AFM) topological insulator (TI) multilayers. This…
Evidence of Higher Order Topology in Multilayer WTe from Josephson Coupling through Anisotropic Hinge States
Yong-Bin Choi, Yingming Xie, Chui-Zhen Chen +12
The noncentrosymmetric Td-WTe, previously known as a type-II Weyl semimetal, is expected to have higher order topological phases with topologically protected, helical one-dimen…
Scaling Behavior of the Quantum Phase Transition from a Quantum Anomalous Hall Insulator to an Axion Insulator
Xinyu Wu, Di Xiao, Chui-Zhen Chen +7
The phase transitions from one plateau to the next plateau or to an insulator in quantum Hall and quantum anomalous Hall (QAH) systems have revealed universal scaling behaviors. A…
Emergent Topological Invariant and Robust Helical Edge States in Two-Dimensional Topological Metals
Chui-Zhen Chen, Hua Jiang, Dong-Hui Xu +1
In this work, we study the disorder effect on topological metals that support a pair of helical edge modes deeply embedded inside the gapless bulk states. Strikingly, we predict th…
Higher-Order Topological Insulators in Quasicrystals
Rui Chen, Chui-Zhen Chen, Jin-Hua Gao +2
Current understanding of higher-order topological insulators (HOTIs) is based primarily on crystalline materials. Here, we propose that HOTIs can be realized in quasicrystals. Spec…
Quantum to classical crossover under dephasing effects in a two-dimensional percolation model
Junjie Qi, Haiwen Liu, Chui-zhen Chen +2
Scaling theory predicts complete localization in in quantum systems belonging to orthogonal class (i.e. with time-reversal symmetry and spin-rotation symmetry). The conductan…