548 citations · 4.5k across the 56 of their papers we have counts for
32 papers · 1 filter
Three-dimensional real Chern insulator in bulk -graphyne
Xu-Tao Zeng, Bin-Bin Liu, Fan Yang +4
The real Chern insulator state, featuring nontrivial real Chern number and second-order boundary modes, has been revealed in a few two-dimensional systems. The concept can be exten…
Second-order and real Chern topological insulator in twisted bilayer -graphyne
Bin-Bin Liu, Xu-Tao Zeng, Cong Chen +2
The study of higher-order and real topological states as well as the material realization have become a research forefront of topological condensed matter physics in recent years.…
Monolayer and bilayer PtCl: Energetics, magnetism, and band topology
Yalong Jiao, Xu-Tao Zeng, Cong Chen +3
Two-dimensional (2D) magnetic materials hosting nontrivial topological states are interesting for fundamental research as well as practical applications. Recently, the topological…
Topological hinge modes in Dirac semimetals
Xu-Tao Zeng, Ziyu Chen, Cong Chen +3
Dirac semimetals (DSMs) are an important class of topological states of matter. Here, focusing on DSMs of band inversion type, we investigate their boundary modes from the effectiv…
I4/mcm-Si: An Ideal Topological Nodal-Line Semimetal
Laiyuan Su, Shifang Li, Jin Li +6
Topological semimetals (TSMs) have attracted numerous attention due to their exotic physical properties and great application potentials. Silicon-based TMSs are of particularly imp…
Second-Order Real Nodal-Line Semimetal in Three-Dimensional Graphdiyne
Cong Chen, Xu-Tao Zeng, Ziyu Chen +3
Real topological phases featuring real Chern numbers and second-order boundary modes have been a focus of current research, but finding their material realization remains a challen…
Phononic real Chern insulator with protected corner modes in graphynes
Jiaojiao Zhu, Weikang Wu, Jianzhou Zhao +6
Higher-order topological insulators have attracted great research interest recently. Different from conventional topological insulators, higher-order topological insulators do not…
Multiple magnetism controlled topological states in EuAgAs
Yahui Jin, Xu-Tao Zeng, Xiaolong Feng +6
The interplay between magnetism and band topology is a focus of current research on magnetic topological systems. Based on first-principle calculations and symmetry analysis, we re…
Topological gimbal phonons in T-carbon
Jing-Yang You, Xian-Lei Sheng, Gang Su
The topological metal states in electronic systems have been extensively studied, but topological phonons were explored only in few examples so far. Here, we expose for the first t…
Graphyne as a second-order and real Chern topological insulator in two dimensions
Cong Chen, Weikang Wu, Zhi-Ming Yu +4
Higher-order topological phases and real topological phases are two emerging topics in topological states of matter, which have been attracting considerable research interest. Howe…
Tunable anomalous Hall transport in bulk and two-dimensional 1-CrTe: A first-principles study
Si Li, Shan-Shan Wang, Bo Tai +4
Layered materials with robust magnetic ordering have been attracting significant research interest. In recent experiments, a new layered material 1-CrTe has been synthesiz…
Universal Approach to Magnetic Second-Order Topological Insulator
Cong Chen, Zhida Song, Jian-Zhou Zhao +4
We propose a universal practical approach to realize magnetic second-order topological insulator (SOTI) materials, based on properly breaking the time reversal symmetry in conventi…
Two-dimensional CoSe structures: Intrinsic magnetism, strain-tunable anisotropic valleys, magnetic Weyl point, and antiferromagnetic metal state
Bo Tai, Weikang Wu, Xiaolong Feng +5
The interplay between magnetism, band topology, and electronic correlation in low dimensions has been a fascinating subject of research. Here, we propose two-dimensional (2D) mater…
Two-dimensional antiferromagnetic Dirac fermions in monolayer TaCoTe
Si Li, Ying Liu, Zhi-Ming Yu +5
Dirac point in two-dimensional (2D) materials has been a fascinating subject of research. Recently, it has been theoretically predicted that Dirac point may also be stabilized in 2…
Topological nodal lines and hybrid Weyl nodes in YCoC
Yuanfeng Xu, Yueqiang Gu, Tiantian Zhang +4
Based on first-principles calculations and effective model analysis, we propose that the noncentrosymmetric superconductor YCoC in normal state is a topological semimetal. In t…
Two-dimensional Weyl Half Semimetal and Tunable Quantum Anomalous Hall Effect in Monolayer PtCl
Jing-Yang You, Cong Chen, Zhen Zhang +3
We propose a new topological quantum state of matter---the two-dimensional (2D) Weyl half semimetal (WHS), which features 2D Weyl points at Fermi level belonging to a single spin c…
Hourglass Weyl loops in two dimensions: Theory and material realization in monolayer GaTeI family
Weikang Wu, Yalong Jiao, Si Li +3
Nodal loops in two-dimensional (2D) systems are typically vulnerable against spin-orbit coupling (SOC). Here, we explore 2D systems with a type of doubly degenerate nodal loops tha…
Carboneyane: A nodal line topological carbon with sp-sp2-sp3 chemical bonds
Jing-Yang You, Xing-Yu Ma, Zhen Zhang +4
A structurally stable carbon allotrope with plentiful topological properties is predicted by means of first-principles calculations. This novel carbon allotrope possesses the simpl…
Weyl-loop half metal in Li(FeO)
Cong Chen, Zhi-Ming Yu, Si Li +3
Nodal-line metals and semimetals, as interesting topological states of matter, have been mostly studied in nonmagnetic materials. Here, based on first-principles calculations and s…
Quadratic contact point semimetal: Theory and material realization
Ziming Zhu, Ying Liu, Zhi-Ming Yu +5
Most electronic properties of metals are determined solely by the low-energy states around the Fermi level, and for topological metals/semimetals, these low-energy states become di…
Nodal Loop and Nodal Surface States in Ti3Al Family Materials
Xiaoming Zhang, Zhi-Ming Yu, Ziming Zhu +4
Topological metals and semimetals are new states of matter which attract great interest in current research. Here, based on first-principles calculations and symmetry analysis, we…
From Multiple Nodal Chain to Dirac/Weyl Semimetal and Topological Insulator in Ternary Hexagonal Materials
Cong Chen, Zefeng Su, Xiaoming Zhang +2
Dirac semimetal (DSM) hosts four-fold degenerate isolated band-crossing points with linear dispersion, around which the quasiparticles resemble the relativistic Dirac Fermions. It…
Nonsymmorphic-symmetry-protected hourglass Dirac loop, nodal line, and Dirac point in bulk and monolayer SiTe ( Ta, Nb)
Si Li, Ying Liu, Shan-Shan Wang +5
Nonsymmorphic space group symmetries can generate exotic band-crossings in topological metals and semimetals. Here, based on symmetry analysis and first-principles calculations, we…
Graphdiyne Nanoribbons with Open Hexagonal Rings: Existence of Topological Unprotected Edge States
Cong Chen, Jin Li, Xian-Lei Sheng
Using first principles calculations, we studied a new class of graphdiyne nanoribbons (GDYNR) with open hexagonal rings on the edges.To avoid the effects from dangling bond, hydrog…