98 citations · 793 across the 32 of their papers we have counts for
20 papers · 1 filter
Design monolayer iodinenes based on halogen bond and tiling theory
Kejun Yu, Botao Fu, Runwu Zhang +5
Xenes, two-dimensional (2D) monolayers composed of a single element, with graphene as a typical representative, have attracted widespread attention. Most of the previous Xenes, X f…
Design of Antiferromagnetic Second-order Band Topology with Rotation Topological Invariants in Two Dimensions
Fangyang Zhan, Zheng Qin, Dong-Hui Xu +3
The existence of fractionally quantized topological corner states serves as a key indicator for two-dimensional second-order topological insulators (SOTIs), yet has not been experi…
Realization of a two-dimensional checkerboard lattice in monolayer CuN
Xuegao Hu, Run-Wu Zhang, Da-Shuai Ma +10
Two-dimensional checkerboard lattice, the simplest line-graph lattice, has been intensively studied as a toy model, while material design and synthesis remain elusive. Here, we rep…
Hybrid Nodal-chain Semimetal State in MgCaN2
Hongbo Wu, Da-Shuai Ma, Botao Fu
The distinct over-tilting of band crossings in topological semimetal generates the type-I and typeII classification of Dirac/Weyl and nodal-line fermions, accompanied by the exotic…
Phononic Obstructed Atomic Insulators with Robust Corner Modes
Da-Shuai Ma, Kejun Yu, Xiao-Ping Li +2
Higher-order topological insulators (HOTIs) are described by symmetric exponentially decayed Wannier functions at some unoccupied Wyckoff positions and classified as ob…
Inventory of high-quality flat-band van der Waals materials
Jingyi Duan, Da-Shuai Ma, Run-Wu Zhang +5
More is left to do in the field of flat bands besides proposing theoretical models. One unexplored area is the flat bands featured in the van der Waals (vdW) materials. Exploring m…
Quantum transport evidence of the boundary states and Lifshitz transition in BiBr
Dong-Yun Chen, Dashuai Ma, Junxi Duan +4
The quasi-one-dimensional van der Waals compound BiBr was recently found to be a promising high-order topological insulator with exotic electronic states. In this paper, we…
Charge-4 Weyl point: Minimum lattice model and chirality-dependent properties
Chaoxi Cui, Xiao-Ping Li, Da-Shuai Ma +2
Topological Weyl semimetals have been attracting broad interest. Recently, a new type of Weyl point with topological charge of , termed as charge-4 Weyl point (C-4 WP), was prop…
Two-dimensional Dirac semiconductor and its material realization
Botao Fu, Chao He, Da-Shuai Ma +3
We propose a new concept of two-dimensional (2D) Dirac semiconductor which is characterized by the emergence of fourfold degenerate band crossings near the band edge and provide a…
Weyl Nodal Line-Surface Half-metal in CaFeO
Run-Wu Zhang, Da-Shuai Ma, Jian-Min Zhang +1
Manipulating the spin degrees of freedom of electrons affords an excellent platform for exploring novel quantum states in condensed-matter physics and material science. Based on fi…
Observation of the Topologically Originated Edge States in large-gap Quasi-One-Dimensional a-BiBr
Pengcheng Mao, Maoyuan Wang, Dashuai Ma +16
Two-dimensional topological insulator features time-reversal-invariant spin-momentum-locked one-dimensional (1D) edge states with a linear energy dispersion. However, experimental…
Experimental evidence of monolayer AlB with symmetry-protected Dirac cones
Daiyu Geng, Kejun Yu, Shaosheng Yue +13
Monolayer AlB is composed of two atomic layers: honeycomb borophene and triangular aluminum. In contrast with the bulk phase, monolayer AlB is predicted to be a superconduc…
Fully spin-polarized nodal loop semimetals in alkaline-metal monochalcogenide monolayers
Xiaodong Zhou, Run-Wu Zhang, Zeying Zhang +4
Topological semimetals in ferromagnetic materials have attracted enormous attention due to the potential applications in spintronics. Using the first-principles density functional…
Weyl nodal point-line Fermion in ferromagnetic EuBi
Hongbo Wu, Da-Shuai Ma, Botao Fu +2
Based on calculations and low-energy effective model, we propose a type of Weyl nodal point-line fermion, composed of 0D Weyl points and 1D Weyl nodal lin…
Cat's cradle-like Dirac semimetals in layer groups with multiple screw axes: Application to 2D Borophene and Borophane
Xiaotong Fan, Dashuai Ma, Botao Fu +2
Recently, the crystal symmetry-protected topological semimetals have aroused extensive interests, especially for the nonsymmorphic symmetry-protected one. We list the possible nonm…
Hourglass-like Nodal Net Semimetal in Ag2BiO3
Botao Fu, Dashuai Ma, Xiaotong Fan +2
Based on first-principles calculation and analysis of crystal symmetries, we propose a kind of hourglass-like nodal net (HNN) semimetal in centrosymmetric Ag2BiO3 that is construct…
Nodal line semimetal states in positive electrode material of lead-acid battery: Lead dioxide family and its derivatives
Run-Wu Zhang, Cheng-Cheng Liu, Da-Shuai Ma +2
Based on first-principles calculations and symmetry analysis, we report that the three-dimensional (3D) nodal line (NL) semimetal phases can be realized in the lead dioxide family…
Mirror Protected Multiple Nodal Line Semimetals and Material Realization
Da-Shuai Ma, Jianhui Zhou, Botao Fu +3
The conventional k.p method fails to capture the full and essential physics of many symmetry enriched multiple nodal line structures in the three dimensional Brillouin zone. Here w…
Trigonal warping induced terraced spin texture and nearly perfect spin polarization in graphene with Rashba effect
Da-Shuai Ma, Zhi-Ming Yu, Hui Pan +1
Electrical tunability of spin polarization has been a focus in spintronics. Here, we report that the trigonal warping (TW) effect, together with spin-orbit coupling (SOC), can lead…
From Node-Line Semimetals to Large Gap QSH States in New Family of Pentagonal Group-IVA Chalcogenide
Run-Wu Zhang, Cheng-Cheng Liu, Da-Shuai Ma +1
Two-dimensional (2D) topological insulators (TIs) have attracted tremendous research interest from both theoretical and experimental fields in recent years. However, it is much les…