98 citations · 793 across the 32 of their papers we have counts for
32 papers
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…
Optical bulk-boundary dichotomy in a quantum spin Hall insulator
Junfeng Han, Pengcheng Mao, Hailong Chen +17
The bulk-boundary correspondence is a key concept in topological quantum materials. For instance, a quantum spin Hall insulator features a bulk insulating gap with gapless helical…
2D Ladder polyborane: an ideal Dirac semimetal with a multi-feld-tunable band gap
Botao Fu, Run-Wu Zhang, Xiaotong Fan +3
Hydrogen, a simple and magic element, has attracted increasing attention for its effective incorporation within solids and powerful manipulation of electronic states. Here, we show…
Strain-driven phonon topological phase transition impedes thermal transport in titanium monoxide
Xin Jin, Da-shuai Ma, Peng Yu +4
Topological phonon states in crystalline materials have attracted significant research interests due to their importance for fundamental physical phenomena, yet their implication o…
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…
Anomalous skew-scattering nonlinear Hall effect and chiral photocurrents in {\it PT}-symmetric antiferromagnets
Da Ma, Arpit Arora, Giovanni Vignale +1
Berry curvature and skew-scattering play central roles in determining both the linear and nonlinear anomalous Hall effects. Yet in {\it PT}-symmetric antiferromagnetic metals, Hall…
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…
From Atomic Semimetal to Topological Nontrivial Insulator
Xiao-Ping Li, Da-Shuai Ma, Cheng-Cheng Liu +2
Topological band insulators and (semi-) metals can arise out of atomic insulators when the hopping strength between electrons increases. Such topological phases are separated from…
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…
Catalogue of Flat-Band Stoichiometric Materials
Nicolas Regnault, Yuanfeng Xu, Ming-Rui Li +11
Topological electronic flatten bands near or at the Fermi level are a promising avenue towards unconventional superconductivity and correlated insulating states. However, the relat…
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…
Double Dirac Nodal Line Semimetal with Torus Surface State
Xiao-Ping Li, Botao Fu, Da-Shuai Ma +3
We propose a class of nodal line semimetals that host an eight-fold degenerate double Dirac nodal line (DDNL) with negligible spin-orbit coupling. We find only 5 of the 230 space g…
Fragile topology in line-graph lattices with two, three, or four gapped flat bands
Christie S. Chiu, Da-Shuai Ma, Zhi-Da Song +2
The geometric properties of a lattice can have profound consequences on its band spectrum. For example, symmetry constraints and geometric frustration can give rise to topologicial…
Spin-Orbit-Induced Topological Flat Bands in Line and Split Graphs of Bipartite Lattices
Da-Shuai Ma, Yuanfeng Xu, Christie S. Chiu +4
Topological flat bands, such as the band in twisted bilayer graphene, are becoming a promising platform to study topics such as correlation physics, superconductivity, and transpor…
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…
Type-III Weyl Semimetals: (TaSe4)2I
Xiao-Ping Li, Ke Deng, Botao Fu +6
Weyl semimetals have been classified into type-I and type-II with respect to the geometry of their Fermi surfaces at the Weyl points. Here, we propose a new class of Weyl semimetal…
Unconventional Hall Effect induced by Berry Curvature
Jun Ge, Da Ma, Yanzhao Liu +10
Berry phase and Berry curvature play a key role in the development of topology in physics and do contribute to the transport properties in solid state systems. In this paper, we re…
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…