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Kinetics-Limited Two-Step Growth of van der Waals Puckered Honeycomb Sb Monolayer
Zhi-Qiang Shi, Huiping Li, Qian-Qian Yuan +7
Puckered honeycomb Sb monolayer, the structural analog of black phosphorene, has been recently successfully grown by means of molecular beam epitaxy. However, little is known to da…
Tuning the electronic structure of α-antimonene monolayer through interface engineering
Zhi-Qiang Shi, Huiping Li, Cheng-Long Xue +8
The interfacial charge transfer from the substrate may influence the electronic structure of the epitaxial van der Waals (vdW) monolayers and thus their further technological appli…
Ferromagnetic MnSn monolayer epitaxially grown on silicon substrate
Qian-Qian Yuan, Zhaopeng Guo, Zhi-Qiang Shi +6
Two-dimensional (2D) ferromagnetic materials have been exhibiting promising potential in applications, such as spintronics devices. To grow epitaxial magnetic films on silicon subs…
Quasiparticle Interference Evidence of the Topological Fermi Arc States in Chiral Fermionic Semimetal CoSi
Qian-Qian Yuan, Liqin Zhou, Zhi-Cheng Rao +13
Chiral fermions in solid state feature "Fermi arc" states, connecting the surface projections of the bulk chiral nodes. The surface Fermi arc is a signature of nontrivial bulk topo…
Turning ZrTe5 into semiconductor through atomic intercalation
Qi-Yuan Li, Yang-Yang Lv, Jinghui Wang +11
In this work, we use the liquid ammonia method to successfully intercalate potassium atoms into ZrTe5 single crystal, and find a transition from semimetal to semiconductor at low t…
Van der Waals heteroepitaxial growth of monolayer Sb in puckered honeycomb structure
Zhi-Qiang Shi, Huiping Li, Qian-Qian Yuan +8
Atomically thin two-dimensional (2D) crystals have gained tremendous attentions owing to their potential impacts to the future electronics technologies, as well as the exotic pheno…
High-buckled R3 stanene with topologically nontrivial energy gap
Ye-Heng Song, Zhi-Wen Wang, Zhen-Yu Jia +6
Stanene has been predicted to be a two-dimensional topological insulator (2DTI). Its low-buckled atomic geometry and the enhanced spin-orbit coupling are expected to cause a promin…
Aggregation of BiTe Monolayer on BiTe(111) Induced by Diffusion of Intercalated Atoms in van der Waals Gap
Zhi-Wen Wang, Wen-Kai Huang, Kai-Wen Zhang +3
We report a post-growth aging mechanism of BiTe(111) films with scanning tunneling microscopy in combination with density functional theory calculation. It is found that a…
Direct Visualization of 2D Topological Insulator in Single-layer 1T'-WTe2
Zhen-Yu Jia, Ye-Heng Song, Xiang-Bing Li +9
We grow nearly freestanding single-layer 1T'-WTe2 on graphitized 6H-SiC(0001) by using molecular beam epitaxy (MBE), and characterize its electronic structure with scanning tunneli…
Real-space characterization of reactivity towards water at Bi2Te3(111) surface
Kai-Wen Zhang, Ding Ding, Chao-Long Yang +10
Surface reactivity is important in modifying the physical and chemical properties of surface sensitive materials, such as the topological insulators (TIs). Even though many studies…
Tailoring Kinetics on a Topological Insulator Surface by Defect-Induced Strain: Pb Mobility on Bi2Te3
Wen-Kai Huang, Kai-Wen Zhang, Chao-Long Yang +5
Heteroepitaxial structures based on BiTe-type topological insulators (TIs) exhibit exotic quantum phenomena. For optimal characterization of these phenomena, it is desi…