1.9k citations · 5k across the 24 of their papers we have counts for
24 papers
Synthesis of Monolayer Ice on a Hydrophobic Metal Surface
Qiaoxiao Zhao, Meiling Xu, Dong Li +10
Understanding water-metal interactions is central to disciplines spanning catalysis, electrochemistry, and atmospheric science. Monolayer ice phases are well established on hydroph…
Evidence of a two-dimensional nitrogen crystalline structure on silver surfaces
Xuegao Hu, Haijun Cao, Zhicheng Gao +11
Nitrogen, the most abundant element in Earth's atmosphere, exists as a diatomic gas under standard temperature and pressure. In the two-dimensional (2D) limit, atomically thin nitr…
Development of a 10.8-eV Tabletop Femtosecond Laser with Tunable Polarization for High-Resolution Angle-Resolved Photoemission Spectroscopy
Jisong Gao, Qiaoxiao Zhao, Wenbo Liu +13
The development of extreme ultraviolet sources is critical for advancing angleresolved photoemission spectroscopy (ARPES), a powerful technique for probing the electronic structure…
Flat bands and temperature-driven phase transition in quasi-one-dimensional zigzag chains
Jisong Gao, Haijun Cao, Xuegao Hu +12
Flat-band materials have garnered extensive attention due to their captivating properties associated with strong correlation effects. While flat bands have been discovered in sever…
Evidence for Two-dimensional Weyl Fermions in Air-Stable Monolayer PtTe
Zhihao Cai, Haijun Cao, Haohao Sheng +14
The Weyl semimetals represent a distinct category of topological materials wherein the low-energy excitations appear as the long-sought Weyl fermions. Exotic transport and optical…
Evidence for Multiferroicity in Single-Layer CuCrSe
Zhenyu Sun, Yueqi Su, Aomiao Zhi +13
Multiferroic materials, which simultaneously exhibit ferroelectricity and magnetism, have attracted substantial attention due to their fascinating physical properties and potential…
Layer-dependent Raman spectroscopy of ultrathin TaPdTe
Zhenyu Sun, Zhaopeng Guo, Dayu Yan +7
Two-dimensional topological insulators (2DTIs) or quantum spin Hall insulators are attracting increasing attention due to their potential applications in next-generation spintronic…
Bound excitons and bandgap engineering in violet phosphorus
Zhenyu Sun, Zhihao Cai, Peng Cheng +5
Violet phosphorus (VP), the most stable phosphorus allotrope, is a van der Waals semiconductor that can be used to construct -type nanodevices. Recently, high-quality V…
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…
Observation of Gapped Dirac Cones in a Two-Dimensional Su-Schrieffer-Heeger Lattice
Daiyu Geng, Hui Zhou, Shaosheng Yue +6
The Su-Schrieffer-Heeger (SSH) model in a two-dimensional rectangular lattice features gapless or gapped Dirac cones with topological edge states along specific peripheries. While…
Exfoliation of 2D van der Waals crystals in ultrahigh vacuum for interface engineering
Zhenyu Sun, Xu Han, Zhihao Cai +11
Two-dimensional (2D) materials and their heterostructures have been intensively studied in recent years due to their potential applications in electronic, optoelectronic, and spint…
Atomic-scale Manipulation of Single-Polaron in a Two-Dimensional Semiconductor
Huiru Liu, Aolei Wang, Ping Zhang +9
Polaron is a composite quasiparticle derived from an excess carrier trapped by local lattice distortion, and it has been studied extensively for decades both theoretically and expe…
Observation of topological flat bands in the kagome semiconductor NbCl
Zhenyu Sun, Hui Zhou, Cuixiang Wang +12
The destructive interference of wavefunctions in a kagome lattice can give rise to topological flat bands (TFBs) with a highly degenerate state of electrons. Recently, TFBs have be…
Observation of one-dimensional Dirac fermions in silicon nanoribbons
Shaosheng Yue, Hui Zhou, Ya Feng +12
Dirac materials, which feature Dirac cones in the reciprocal space, have been one of the hottest topics in condensed matter physics in the past decade. To date, 2D and 3D Dirac Fer…
Observation of quantum spin Hall states in TaPdTe
Xuguang Wang, Daiyu Geng, Dayu Yan +14
Two-dimensional topological insulators (2DTIs), which host the quantum spin Hall (QSH) effect, are one of the key materials in next-generation spintronic devices. To date, experime…
Universal mechanical exfoliation of large-area 2D crystals
Yuan Huang, Yu-Hao Pan, Rong Yang +27
Two-dimensional (2D) materials provide extraordinary opportunities for exploring phenomena arising in atomically thin crystals. Beginning with the first isolation of graphene, mech…
Experimental realization of graphene-like borophene
Wenbin Li, Longjuan Kong, Caiyun Chen +7
We report a successful preparation of a purely honeycomb, graphene-like borophene, by using an Al(111) surface as the substrate and molecular beam epitaxy (MBE) growth in ultrahigh…
Direct evidences of pentagonal silicon chains and magic clusters
Shaoxiang Sheng, Runze Ma, Jiangbin Wu +11
Pentagon is one of the most beautiful geometric structures in nature, but it is rarely seen simply because five-fold symmetry is mathematically forbidden in a 2D or 3D periodic lat…
Discovery of two-dimensional Dirac nodal line fermions in monolayer Cu2Si
Baojie Feng, Botao Fu, Shusuke Kasamatsu +18
Topological nodal line semimetals, a novel quantum state of materials, possess topologically nontrivial valence and conduction bands that touch at a line near the Fermi level. The…
Experimental Realization of Two-Dimensional Boron Sheets
Baojie Feng, Jin Zhang, Qing Zhong +7
Boron is the fifth element in the periodic table and possesses rich chemistry second only to carbon. A striking feature of boron is that B12 icosahedral cages occur as the building…
Tuning the Band Gap in Silicene by Oxidation
Yi Du, Jincheng Zhuang, Hongsheng Liu +10
Silicene monolayers grown on Ag(111) surfaces demonstrate a band gap that is tunable by oxygen adatoms from semimetallic to semiconducting type. By using low-temperature scanning t…
Persistent Dirac Fermion State on Bulk-like Si(111) Surface
Jian Chen, Wenbin Li, Baojie Feng +4
The "multilayer silicene" films were grown on Ag(111), with increasing thickness above 30 monolayers (ML). We found that the "multilayer silicene" is indeed a bulk Si(111) film. Su…
Observation of Dirac cone warping and chirality effects in silicene
Baojie Feng, Hui Li, Cheng-Cheng Liu +6
We performed low temperature scanning tunneling microscopy (STM) and spectroscopy (STS) studies on the electronic properties of (R3xR3)R30° phase of silicene on Ag(111) surface. We…
Evidence of silicene in honeycomb structures of silicon on Ag(111)
Baojie Feng, Zijing Ding, Sheng Meng +5
In the search for evidence of silicene, a two-dimensional honeycomb lattice of silicon, it is important to obtain a complete picture for the evolution of Si structures on Ag(111),…