73 citations · 241 across the 14 of their papers we have counts for
14 papers
Berry-Curvature Engineering for Nonreciprocal Directional Dichroism in Two-Dimensional Antiferromagnets
Wenhao Liang, Junjie Zeng, Zhenhua Qiao +2
In two-dimensional antiferromagnets, we identify the mixed Berry curvature as the geometrical origin of the nonreciprocal directional dichroism (NDD), which refers to the differenc…
Chiral-Flux-Phase-Based Topological Superconductivity in Kagome Systems with Mixed Edge Chiralities
Junjie Zeng, Qingming Li, Xun Yang +2
Recent studies have attracted intense attention on the quasi-2D kagome superconductors ( K, Rb, and Cs) where the unexpected chiral flux phase (CF…
Floquet Engineering of Nonequilibrium Valley-Polarized Quantum Anomalous Hall Effect with Tunable Chern Number
Fangyang Zhan, Junjie Zeng, Zhuo Chen +4
Numerous attempts have been made so far to explore the quantum anomalous Hall effect (QAHE), but the ultralow observed temperature strongly hinders its practical applications. Henc…
Layer Zero-Line Modes in Antiferromagnetic Topological Insulators
Wenhao Liang, Tao Hou, Junjie Zeng +3
Recently, the magnetic domain walls have been experimentally observed in antiferromagnetic topological insulators MnBiTe, where we find that the topological zero-line modes…
Topological Corner States in Graphene by Bulk and Edge Engineering
Junjie Zeng, Chen Chen, Yafei Ren +3
Two-dimensional higher-order topology is usually studied in (nearly) particle-hole symmetric models, so that an edge gap can be opened within the bulk one. But more often deviates…
Berry-Curvature Exchange Induced Anderson Localization in Large-Chern-Number Quantum Anomalous Hall Effect
Hui Yang, Junjie Zeng, Yulei Han +1
We theoretically investigate the localization mechanism of quantum anomalous Hall Effect (QAHE) with large Chern numbers in bilayer graphene and magnetic topological…
Mesoscopic Electronic Transport in Twisted Bilayer Graphene
Yulei Han, Yafei Ren, Xinlong Dong +3
We numerically investigate the electronic transport properties between two mesoscopic graphene disks with a twist by employing the density functional theory coupled with non-equili…
Finite-Size Effects in the Dynamic Conductivity and Faraday Effect of Quantum Anomalous Hall Insulators
Junjie Zeng, Tao Hou, Zhenhua Qiao +1
We theoretically study the finite-size effects in the dynamical response of a quantum anomalous Hall insulator in the disk geometry. Semi-analytic and numerical results are obtaine…
Micro-Structuring, Ablation and Defect Generation in Graphene with Femtosecond Pulses
Andres Vasquez, Panagis Samolis, Junjie Zeng +1
Femtosecond micromachining offers a contact-free and mask-less technique for material patterning. With ultrafast laser irradiation, permanent modifications to the properties of sin…
Universal Current Correlations Induced by the Majorana and Fermionic Andreev Bound States
Kunhua Zhang, Xinlong Dong, Junjie Zeng +2
Due to their nonlocality, Majorana bound states have been proposed to induce current-current correlations (CCCs) that are completely different from those induced by low-energy ferm…
Current partition at zero-line intersection of quantum anomalous Hall topologies
Yafei Ren, Junjie Zeng, Ke Wang +2
At the interface between two-dimensional materials with different topologies, topologically protected one-dimensional states (also named as zero-line modes) arise. Here, we focus o…
Spin-Pairing Correlations and Spin Polarization of Majorana Bound States in Two-Dimensional Topological Insulator Systems
Kunhua Zhang, Junjie Zeng, Yafei Ren +1
We demonstrate that zero-energy Majorana bound state, in the ferromagnetic insulator (FI)-superconductor (SC) junction formed on the edge of two-dimensional topological insulator,…
Topological phase transition from trigonal warping in van der Waals multilayers
Junjie Zeng, Yafei Ren, Kunhua Zhang +1
In van der Waals multilayers of triangular lattice, trigonal warping occurs universally due to the interlayer hopping. We theoretically investigate the effect of trigonal warping u…
Quantum anomalous Hall effect in atomic crystal layers from in-plane magnetization
Yafei Ren, Junjie Zeng, Xinzhou Deng +3
We theoretically report that, with \textit{in-plane} magnetization, the quantum anomalous Hall effect (QAHE) can be realized in two-dimensional atomic crystal layers with preserved…