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Tunable topological edge states in black phosphorus-like Bi(110)
Chen Liu, Shengdan Tao, Guanyong Wang +12
We have investigated the structures and electronic properties of ultra-thin Bi(110) films grown on an s-wave superconductor substrate using low-temperature scanning tunneling micro…
Atomic-Scale Imaging of Fractional Spinon Quasiparticles in Open-Shell Triangulene Spin- Chains
Zhangyu Yuan, Xin-Yu Zhang, Yashi Jiang +14
The emergence of spinon quasiparticles, which carry spin but lack charge, is a hallmark of collective quantum phenomena in low-dimensional quantum spin systems. While the existence…
Observation of magnetism induced topological edge state in antiferromagnetic topological insulator MnBi4Te7
HaoKe Xu, Mingqiang Gu, Fucong Fei +16
Breaking time reversal symmetry in a topological insulator may lead to quantum anomalous Hall effect and axion insulator phase. MnBi4Te7 is a recently discovered antiferromagnetic…
Strain Tunable Semimetal-Topological-Insulator Transition in Monolayer 1T'-WTe2
Chenxiao Zhao, Mengli Hu, Jin Qin +8
A quantum spin hall insulator(QSHI) is manifested by its conducting edge channels that originate from the nontrivial topology of the insulating bulk states. Monolayer 1T'-WTe2 exhi…
Electronic structure of Ba(Zn0.875Mn0.125)2As2 studied by angle-resolved photoemission spectroscopy
Fengfeng Zhu, W. X. Jiang, P. Li +9
Electronic structure of single crystalline Ba(ZnMn)As, parent compound of the recently founded high-temperature ferromagnetic semiconductor, was stu…
Topologically Nontrivial Bismuth(111) Thin Films Grown on Bi2Te3
Meng-Yu Yao, Fengfeng Zhu, Lin Miao +7
Using high-resolution angle-resolved photoemission spectroscopy, the electronic structure near the Fermi level and the topological property of the Bi(111) films grown on the Bi…
Epitaxial Growth of Two-Dimensional Stanene
Fengfeng Zhu, Wei-jiong Chen, Yong Xu +6
Ultrathin semiconductors present various novel electronic properties. The first experimental realized two-dimensional (2D) material is graphene. Searching 2D materials with heavy e…
Electronic Structures of Black Phosphorus Studied by Angle-resolved Photoemission Spectroscopy
C. Q. Han, M. Y. Yao, X. X. Bai +9
Electronic structures of single crystalline black phosphorus were studied by state-of-art angleresolved photoemission spectroscopy. Through high resolution photon energy dependence…
Orbit- and Atom-Resolved Spin Textures of Intrinsic, Extrinsic and Hybridized Dirac Cone States
Lin Miao, Z. F. Wang, Meng-Yu Yao +7
Combining first-principles calculations and spin- and angle-resolved photoemission spectroscopy measurements, we identify the helical spin textures for three different Dirac cone s…
Quasiparticle Dynamics in Reshaped Helical Dirac Cone of Topological Insulators
Lin Miao, Z. F. Wang, Wenmei Ming +14
Topological insulators (TIs) and graphene present two unique classes of materials which are characterized by spin polarized (helical) and non-polarized Dirac-cone band structures,…
Carrier density dependence of the magnetic properties in iron-doped Bi2Se3 topological insulator
H. Li, Y. R. Song, Meng-Yu Yao +8
The electronic and magnetic properties of iron-doped topological insulator Bi1.84-xFe0.16CaxSe3 single crystals were studied. By co-doping Fe and Ca atoms, ferromagnetic bulk state…
Creation of Helical Dirac Fermions by Interfacing Two Gapped Systems of Ordinary Fermions
Z. F. Wang, Meng-Yu Yao, Wenmei Ming +7
Topological insulators (TIs) are a unique class of materials characterized by a surface (edge) Dirac cone state of helical Dirac fermions in the middle of bulk (surface) gap. When…