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Discovery of two-dimensional Dirac nodal line fermions in monolayer Cu2Si
Baojie Feng, Botao Fu, Shusuke Kasamatsu +18
Topological nodal line semimetals, a novel quantum state of materials, possess topologically nontrivial valence and conduction bands that touch at a line near the Fermi level. The…
Floquet High Chern Insulators in Periodically Driven Chirally Stacked Multilayer Graphene
Si Li, Cheng-Cheng Liu, Yugui Yao
Chirally stacked -layer graphene is a semimetal with band-touching at two nonequivalent corners in its Brillioun zone. We predict that an off-resonant circularly polar…
Topological, Valleytronic, and Optical Properties of Monolayer PbS
Wenhui Wan, Yugui Yao, Liangfeng Sun +2
We systematically examine the topological, valleytronic, and optical properties of experimentally accessible PbS (001) few-layers, with a focus on the monolayer. With even-odd laye…
A new kind of 2D topological insulators BiCN with a giant gap and its substrate effects
Botao Fu, Yanfeng Ge, Wenyong Su +2
Based on DFT calculation, we predict that BiCN, i.e., bilayer Bi films passivated with -CN group, is a novel 2D Bi-based material with highly thermodynamic stability, and demonstra…
van der Waals Heterostructures of Germanene, Stanene and Silicene with Hexagonal Boron Nitride and Their Topological Domain Walls
Maoyuan Wang, Liping Liu, Cheng-Cheng Liu +1
We investigate van der Waals (vdW) heterostructures made of germanene, stanene or silicene with hexagonal Boron Nitride (h-BN). The intriguing topological properties of these buckl…