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Mott phase in a van der Waals transition-metal halide at single layer limit
Lang Peng, Jianzhou Zhao, Gui-Yuan Hua +9
Two-dimensional materials offer opportunities for unravelling unprecedented ordered states at single layer limit. Among such ordered states, Mott phase is rarely explored. Here, we…
New types of topological superconductors under local magnetic symmetries
Jinyu Zou, Qing Xie, Zhida Song +1
We classify gapped topological superconducting (TSC) phases of one-dimensional quantum wires with local magnetic symmetries (LMSs), in which the time-reversal symmetry $\mathcal{T}…
Magnetotransport properties of the layered CaAl2Si2 semimetal hosting multiple nontrivial topological states
Hao Su, Xianbiao Shi, Wei Xia +9
Combination of different nontrivial topological states in a single material is capable of realizing multiple functionalities and exotic physics, but such materials are still very s…
Confinement Effect Driven Quantum Spin Hall Effect in Monolayer AuTe2Cl
Guyue Zhong, Q. Xie, Gang Xu
Based on first-principles calculations, we predict that the monolayer AuTe2Cl is a quantum spin Hall (QSH) insulator with a topological band gap about 10 meV. The three-dimensional…
The study of magnetic topological semimetals by first principles calculations
Jinyu Zou, Zhuoran He, Gang Xu
Magnetic topological semimetals (TSMs) are topological quantum materials with broken time-reversal symmetry (TRS) and isolated nodal points or lines near the Fermi level. Their top…
Higher-order topological insulators in a crisscross antiferromagnetic model
Jinyu Zou, Zhuoran He, Gang Xu
We present a -respecting crisscross AFM model in 2D and 3D, both belonging to the classification and exhibiting interesting magnetic high-order topological insulating…