334 citations · 532 across the 18 of their papers we have counts for
18 papers
Enhancing Quasi-Two-Dimensional Electronic Structure in Bi2O2Se via Chlorine Substitution
Yong-Zhen Jiang, Qi-Xun Wen, Xiang Xu +17
Bismuth oxyselenide (Bi2O2Se) has emerged as a leading semiconductor candidate for next-generation electronics and quantum phenomena research. However, its strong ionic interlayer…
Non-excitonic mechanism for electronic and structural phase transitions in Ta2Ni(Se,S)5
Weichen Tang, Zhenglu Li, Cheng Chen +2
We present a first-principles study based on density functional theory (DFT) on the electronic and structural properties of Ta2NiSe5, a layered transition metal chalcogenide that h…
Massive 1D Dirac Line, Solitons and Reversible Manipulation on the Surface of a Prototype Obstructed Atomic Insulator, Silicon
Zhongkai Liu, Peng Deng, Yuanfeng Xu +16
Topologically trivial insulators can be classified into atomic insulators (AIs) and obstructed atomic insulators (OAIs) depending on whether the Wannier charge centers are localize…
Mott insulating phase and coherent-incoherent crossover across magnetic phase transition in 2D antiferromagnetic CrSBr
Fan Wu, Xuefeng Zhang, Yi Chen +15
In two-dimensional van der Waals magnetic materials, the interplay between magnetism and electron correlation can give rise to new ground states and lead to novel transport and opt…
Tunable moiré bandgap in hBN-aligned bilayer graphene device with in-situ electrostatic gating
Hanbo Xiao, Han Gao, Min Li +12
Over the years, great efforts have been devoted in introducing a sizable and tunable band gap in graphene for its potential application in next-generation electronic devices. The p…
Anomalous excitonic phase diagram in band-gap-tuned Ta2Ni(Se,S)5
Cheng Chen, Weichen Tang, Xiang Chen +17
During a band-gap-tuned semimetal-to-semiconductor transition, Coulomb attraction between electrons and holes can cause spontaneously formed excitons near the zero-band-gap point,…
Topology hierarchy of transition metal dichalcogenides built from quantum spin Hall layers
Lixuan Xu, Yiwei Li, Yuqiang Fang +15
The evolution of the physical properties of two-dimensional material from monolayer limit to the bulk reveals unique consequences from dimension confinement and provides a distinct…
Electronic Origin of Half-metal to Semiconductor Transition and Colossal Magnetoresistance in Spinel HgCr2Se4
Aiji Liang, Zhilin Li, Shihao Zhang +13
Half-metals are ferromagnets hosting spin-polarized conducting carriers and crucial for spintronics applications. The chromium spinel HgCr2Se4 represents a unique type of half-meta…
Persistent exchange splitting in a chiral helimagnet Cr1/3NbS2
Na Qin, Cheng Chen, Shiqiao Du +16
Using high-resolution angle-resolved photoemission spectroscopy (ARPES) and ab-initio calculation, we systematically investigate the electronic structure of the chiral helimagnet C…
Spectral Evidence for Unidirectional Charge Density Wave in Detwinned BaNiAs
Yucheng Guo, Mason Klemm, Ji Seop Oh +16
The emergence of unconventional superconductivity in proximity to intertwined electronic orders is especially relevant in the case of iron-based superconductors. Such order consist…
Observation of Γ-valley moiré bands and emergent hexagonal lattice in twisted transition metal dichalcogenides
Ding Pei, Binbin Wang, Zishu Zhou +19
Twisted van der Waals heterostructures have recently been proposed as a condensed-matter platform for realizing controllable quantum models due to the low-energy moiré bands with s…
Approaching a Minimal Topological Electronic Structure in Antiferromagnetic Topological Insulator MnBi2Te4 via Surface Modification
Aiji Liang, Cheng Chen, Huijun Zheng +12
The topological electronic structure plays a central role in the non-trivial physical properties in topological quantum materials. A minimal, hydrogen-atom-like topological electro…
Observation of Dimension-Crossover of a Tunable 1D Dirac Fermion in Topological Semimetal NbSiTe
Jing Zhang, Yangyang Lv, Xiaolong Feng +11
Condensed matter systems in low dimensions exhibit emergent physics that does not exist in three dimensions. When electrons are confined to one dimension (1D), some significant ele…
Direct Visualization and Manipulation of Tunable Quantum Well State in Semiconducting Nb2SiTe4
Jing Zhang, Zhilong Yang, Shuai Liu +12
Quantum well states (QWSs) can form at the surface or interfaces of materials with confinement potential. They have broad applications in electronic and optical devices such as hig…
Role of electron-phonon coupling in excitonic insulator candidate Ta2NiSe5
Cheng Chen, Xiang Chen, Weichen Tang +15
Electron-hole bound pairs, or excitons, are common excitations in semiconductors. They can spontaneously form and ``condense'' into a new insulating ground state -- the so-called e…
Observation of topological electronic structure in quasi-1D superconductor TaSe3
Cheng Chen, Aiji Liang, Shuai Liu +21
Topological superconductors (TSCs), with the capability to host Majorana bound states that can lead to non-Abelian statistics and application in quantum computation, have been one…
Electronic structure of a Si-containing topological Dirac semimetal CaAl2Si2
Tao Deng, Cheng Chen, Hao Su +17
There has been an upsurge in the discovery of topological quantum materials, where various topological insulators and semimetals have been theoretically predicted and experimentall…
Ultrafast, highly-sensitive infrared photodetectors based on two-dimensional oxyselenide crystals
Jianbo Yin, Zhenjun Tan, Hao Hong +10
Infrared detection and sensing is deeply embedded in modern technology and human society and its development has always been benefitting from the discovery of new photoelectric res…