Article
Materials Science, Multidisciplinary
X. Zhang, H. Zhao, J. Zhu
Summary: A proper amount of excess oxygen plays a significant role in hole-doped cuprate high-T-c superconductivity, and this study reveals the influence of oxygen dopants on lattice and electronic structure through experimental and computational approaches.
MATERIALS TODAY PHYSICS
(2022)
Article
Physics, Multidisciplinary
C. Pepin, H. Freire
Summary: In this paper, the authors present their studies on the phase diagram of cuprate superconductors and propose field-theoretical concepts to explain the properties of these compounds. They introduce the concept of an emergent SU(2) symmetry that rotates between the superconducting and charge order parameters. They also discuss the presence of an emergent U(1) gauge field in the theory and its implications for the pseudogap transition and spectroscopic probes.
Article
Chemistry, Multidisciplinary
Dengrong Sun, Lok Wing Wong, Hok Yin Wong, Ka Hei Lai, Lin Ye, Xinyao Xv, Thuc Hue Ly, Qingming Deng, Jiong Zhao
Summary: The atomic structure of multivariate metal-organic frameworks (MTV-MOFs) was visualized using the iDPC-STEM technique, guiding the design of bulk MOFs for efficient oxygen evolution reaction (OER). Incorporating Fe3+ or 2-aminoterephthalate (ATA) into Ni-BDC weakened the coordination bonds, allowing for selective cleavage via mild heat treatment to generate coordinatively unsaturated metal sites, conductive Ni@C, and hierarchical porous structure. The defective MOFs exhibited excellent OER activity, with current densities of 10 and 100 mA cm(-2) achieved at small overpotentials of 286 mV and 365 mV, respectively, surpassing commercial RuO2 catalyst and most bulk MOFs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Polymer Science
Xiuzheng Chen, Guangming Wang, Minjian Wu, Jiahui Liu, Zhaohong Liu, Xuepu Wang, Yunlong Zou, Kaka Zhang
Summary: Organic afterglow materials, especially polymer-based ones, are important for their long-lived excited states and excellent mechanical properties. This study presents a solvent-free method for fabricating polymer-based organic afterglow materials using photoinitiated polymerization and dopant-matrix design strategy. The obtained polymer-based afterglow materials exhibit enhanced optical properties and can be processed into different shapes.
Article
Physics, Multidisciplinary
Rong Li, Zhen-Su She
Summary: The authors suggest that the pseudogap in cuprates is governed by a unified energy law based on the theory of wall turbulence. They report a quantitative relationship between scattering rate, pseudogap energy, and its onset temperature, determined by the wavevector of density wave order. The energy law also explains the linear scalings for the resistivity of the strange metal phase and the transition temperature of the superconducting phase.
COMMUNICATIONS PHYSICS
(2022)
Article
Multidisciplinary Sciences
Zhibo Liu, Lei Wang, Yi-Lun Hong, Xing-Qiu Chen, Hui-Ming Cheng, Wencai Ren
Summary: Researchers discovered superconducting homologous compounds of 2D MoSi2N4, MoSi2N4(MoN)(4n), which provides a new strategy to tailor the structure and properties of 2D materials by phase homology.
NATIONAL SCIENCE REVIEW
(2023)
Article
Physics, Applied
Ling Qin, Yiqun Liu, Shiping Feng
Summary: The study on the doping dependence of cuprate superconductors in the normal-state thermopower within the t-j model reveals that modifications to the electron dispersion can qualitatively reproduce experimental results. The presence of a pseudogap-generated split of the van Hove peak in the density of states is observed in the underdoped and optimally doped regimes, with accompanying asymmetry in spectral conductivity near the electron Fermi surface. This asymmetry leads to unusual behaviors in the normal-state thermopower across different doping regimes.
MODERN PHYSICS LETTERS B
(2021)
Article
Chemistry, Physical
Hongjun Lin, Qilin Wei, Bao Ke, Wenchao Lin, Hualin Zhao, Bingsuo Zou
Summary: By using a doping strategy, we have synthesized lead-free perovskite with tunable fluorescence. The material shows dynamically adjustable emission wavelength from yellow to near-infrared by varying UV excitation. This study provides guidance for designing high-efficiency and excitation-dependent perovskite phosphors.
JOURNAL OF PHYSICAL CHEMISTRY LETTERS
(2023)
Article
Chemistry, Inorganic & Nuclear
Haoyu Wang, Rui Zhang, Yin Yin Li, Dejun Wang, Yanhong Lin, Tengfeng Xie
Summary: In this study, an NiFeSx-decorated Ti-Fe2O3 photoanode was synthesized using a simple electrodeposition method, leading to improved photocurrent density and onset potential. The true effects of NiFeSx as a cocatalyst for enhancing PEC performance were analyzed using surface photovoltage spectroscopy and other techniques. This work provides a simple method for modifying a Ti-Fe2O3 photoanode for PEC water oxidation with a low-cost and efficient cocatalyst.
DALTON TRANSACTIONS
(2021)
Article
Chemistry, Applied
Shuhui Ding, Yaxian Xu, Junbo Li, Xuepu Wang, Guangming Wang, Haodong Li, Shixue Ren, Kaka Zhang
Summary: Unlike heavy atom effect and n-pi* transition, charge transfer technology and dipole effect can enhance kISC and achieve long-lived room-temperature phosphorescence in dopant-matrix systems. The BF2bdk dopants exhibit charge transfer characters and have multiple phenyl groups in the excited state, enabling efficient intersystem crossing. The selected crystalline matrices suppress nonradiative decay and oxygen quenching, resulting in bright and long-lived room-temperature phosphorescence materials.
Article
Chemistry, Inorganic & Nuclear
Hao Wan, Xue Xiao, Wei Ma, Ying Zhang, Xiaohe Liu, Yanyu Liu, Gen Chen, Ning Zhang, Yijun Cao, Renzhi Ma
Summary: Phosphorus doping was used to modulate the electronic configuration of SnO2 nanoparticles, transforming the water oxidation process from a two-electron transfer to a four-electron transfer pathway, with electrocatalytic activity comparable to benchmark RuO2 nanoparticles. This study demonstrates the potential of tuning electrocatalytic performance of transition metal compound electrocatalysts with non-metallic element dopants.
INORGANIC CHEMISTRY FRONTIERS
(2022)
Article
Chemistry, Multidisciplinary
Boyang Liu, Xiao Chen, Ning Huang, Shaoxiong Liu, Boyuan Shen, Fei Wei, Tiefeng Wang
Summary: Atomic details of Pt1@UiO-66 and Pd1@UiO-66-NH2 are revealed using low-dose integrated differential phase contrast scanning transmission electron microscopy (iDPCSTEM). Single Pt atoms locate on the benzene ring of p-benzenedicarboxylic acid (BDC) linkers in Pt@UiO-66, while single Pd atoms are adsorbed by the amino groups in Pd@UiO-66-NH2. However, Pt@UiO-66-NH2 and Pd@UiO-66 show obvious clusters. Therefore, amino groups do not always favor the formation of single atom catalysts (SACs), and density functional theory (DFT) calculations indicate that a moderate binding strength between metals and MOFs is preferred.
Article
Materials Science, Multidisciplinary
G. Lemut, M. J. Pacholski, C. W. J. Beenakker
Summary: The study shows that the direction of the magnetic field with respect to the vector separating Weyl points of opposite chirality in a Weyl superconductor affects the electrical conduction.
Article
Multidisciplinary Sciences
Yu-Te Hsu, Maarten Berben, Matija Culo, Seiji Adachi, Takeshi Kondo, Tsuneshiro Takeuchi, Yue Wang, Steffen Wiedmann, Stephen M. Hayden, Nigel E. Hussey
Summary: The study reveals the presence of an anomalous vortex liquid in high-Tc cuprates, indicating a close relationship between charge order and superconductivity. This phenomenon is related to the existence of long-range charge order and occurs in the presence of excitation current.
PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
(2021)
Article
Materials Science, Multidisciplinary
Shih-Jye Sun, Hsiung Chou
Summary: Unexpected magnetic properties are observed at the heterostructure interface between a high-temperature superconductor and a colossal magnet, with copper moments appearing at the interface and evidence of charge transfer. A theoretical model is proposed to simulate the interface, revealing that the odd copper moment coexists with the ferromagnetic moment of the colossal magnet and that charge transfer significantly affects superconducting and ferromagnetic order.
RESULTS IN PHYSICS
(2022)
Article
Chemistry, Multidisciplinary
Tongxiang Tang, Wenfeng Yang, Zhonghui Shen, Jian Wang, Mengfan Guo, Yao Xiao, Weibin Ren, Jing Ma, Rong Yu, Ce-Wen Nan, Yang Shen
Summary: A polymer composite with interconnected BaTiO3 ceramic scaffold is proposed and demonstrated, which exhibits a high dielectric constant (epsilon(r)) of approximately 210 at a low BaTiO3 volume fraction of approximately 18%, approaching the upper limit predicted by the parallel model. By incorporating relaxor Ba(ZrxTi1-x)O-3 phase in the BaTiO3 scaffold, dielectric temperature stability is achieved with Delta epsilon(r) below +/- 10% within a broad temperature range (25-140 degrees C). Moreover, the dielectric performances remain stable under a compressive strain of up to 80%. This work provides a facile approach to construct large-scale polymer composites with robust dielectric performance against changes in thermal and mechanical conditions, which are promising for high-temperature applications in flexible electronics.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Chang Liu, Jizhe Cui, Zhiying Cheng, Bozhao Zhang, Siyuan Zhang, Jun Ding, Rong Yu, En Ma
Summary: By employing deep-sub-angstrom-resolution electron ptychography, individual oxygen atoms in a highly concentrated body-centered-cubic solid solution (TiNbZr)(86)O12C1N1 medium-entropy alloy (MEA) were directly observed, revealing the interstitial sites where the oxygen atoms are located. In addition, it was shown for the first time that at high oxygen concentrations, oxygen atoms preferentially occupy the unusual tetrahedral sites. This shift away from octahedral occupancy can be explained by the extra strain energy cost when the necessary displacement of host atoms is hindered in the presence of nearby octahedral interstitials.
ADVANCED MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Zhiming Xu, Wenhui Duan, Yong Xu
Summary: In this study, we constructed a first-principles database for quantum anomalous Hall (QAH) materials and explored the microscopic mechanisms that determine their properties. We found that the Coulomb exchange, which is usually neglected, plays a strong role in a large class of QAH materials and is key to resolving experimental puzzles. Additionally, we identified simple indicators for property evaluation and suggested material design strategies to control QAH chirality and gap. This work is valuable for future research in magnetic topological physics and materials.
Article
Multidisciplinary Sciences
Shaohua Zhou, Changhua Bao, Benshu Fan, Hui Zhou, Qixuan Gao, Haoyuan Zhong, Tianyun Lin, Hang Liu, Pu Yu, Peizhe Tang, Sheng Meng, Wenhui Duan, Shuyun Zhou
Summary: Time-periodic light field has been used to manipulate quantum states in solid-state materials, cold atoms, and photonic systems. This is achieved through interaction with photon-dressed Floquet states in the strong-coupling limit, known as Floquet engineering. In this study, experimental evidence of momentum-resolved Floquet band engineering in a model semiconductor, black phosphorus, is reported using time and angle-resolved photoemission spectroscopy measurements. Strong band renormalization and light-induced dynamical gap opening are observed near the band edges under near-resonance pumping, along with the emergence of Floquet sidebands. The band renormalization shows a selection rule favoring pump polarization along the armchair direction, indicating pseudospin selectivity for Floquet band engineering enforced by lattice symmetry. This work demonstrates pseudospin-selective Floquet band engineering in black phosphorus and provides important guiding principles for Floquet engineering of semiconductors.
Article
Physics, Condensed Matter
Zhongwei Wu, Wandong Xing, Yuanmin Zhu, Rong Yu
Summary: This study investigated the atomic and electronic structures of the La0.75Sr0.25MnO3/SrCoO2.5 interface using first-principles calculations. The polarity of the interface can be compensated through atomic reconstruction or electronic redistribution. The MnO6 octahedra near the interface exhibit the largest distortion, and the density of states around Fermi level and the magnetic coupling across the interface are also discussed.
PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS
(2023)
Article
Biotechnology & Applied Microbiology
Kuan Chen, Meng Zhang, Baihan Gao, Aobulikasimu Hasan, Junhao Li, Yang'oujie Bao, Jingjing Fan, Rong Yu, Yang Yi, Hans Agren, Zilong Wang, Haiyang Liu, Min Ye, Xue Qiao
Summary: In this study, glycosyltransferases (GT) from Astragalus membranaceus were studied to synthesize structurally diverse astragalosides, providing new biocatalytic tools for saponin biosynthesis.
PLANT BIOTECHNOLOGY JOURNAL
(2023)
Article
Physics, Multidisciplinary
Mengmeng Zhang, Rong Yu, Fanyan Meng
Summary: The magnetic properties of Rh clusters with FCC and HCP structures were investigated using first-principles calculations. The study revealed that the structure and magnetic properties are influenced by the size of the clusters. While bulk Rh is nonmagnetic, the nanoparticles or clusters of Rh in FCC and HCP structures exhibit magnetism. The magnetism can be attributed to the reduction of coordination number, rather than lattice expansion. These findings contribute to the understanding of the magnetic properties of noble metal clusters.
Article
Multidisciplinary Sciences
Xiaoxun Gong, He Li, Nianlong Zou, Runzhang Xu, Wenhui Duan, Yong Xu
Summary: The authors propose an E(3)-equivariant deep-learning framework for representing the density functional theory (DFT) Hamiltonian in material structures, which preserves Euclidean symmetry and allows for efficient electronic structure calculations.
NATURE COMMUNICATIONS
(2023)
Editorial Material
Nanoscience & Nanotechnology
Wenhui Duan
Article
Crystallography
Rong Yu, Huan Lei, Zhao Tian
Summary: A phosphorus-free copolymer hydroxyethyl methacrylate-acrylic acid-sodium allyl sulfonate (HEMA-AA-SAS) was synthesized using a free radical polymerization method. The structure of HEMA-AA-SAS was characterized, and its scale and corrosion inhibition performance were evaluated. The copolymer showed near 100% scale inhibition at a concentration of 6 mg/L and a corrosion inhibition effect of 88.12% on carbon steel hanging sheet at a concentration of 7.5 mg/L. The copolymer was also found to effectively destroy the crystal morphology of calcium carbonate. The results indicate that HEMA-AA-SAS has excellent scale and corrosion inhibition performance.
Article
Materials Science, Multidisciplinary
Haoyuan Zhong, Hongyun Zhang, Haoxiong Zhang, Ting Bao, Kenan Zhang, Shengnan Xu, Laipeng Luo, Awabaikeli Rousuli, Wei Yao, Jonathan D. Denlinger, Yaobo Huang, Yang Wu, Yong Xu, Wenhui Duan, Shuyun Zhou
Summary: We report the superconducting and electronic structure properties of a natural van der Waals superlattice (PbSe)(1.14)NbSe2. Anisotropic superconductivity with a higher transition temperature than monolayer NbSe2 is revealed by transport measurements. ARPES measurements reveal the two-dimensional electronic structure and charge transfer characteristics. Our study suggests that natural van der Waals superlattices can achieve intriguing properties distinct from bulk and monolayer samples.
PHYSICAL REVIEW MATERIALS
(2023)
Article
Chemistry, Multidisciplinary
Mingqiang Ren, Fangjun Cheng, Yufei Zhao, Mingqiang Gu, Qiangjun Cheng, Binghai Yan, Qihang Liu, Xucun Ma, Qikun Xue, Can-Li Song
Summary: Nontrivial electronic states in low-dimensional physics have attracted significant attention. This study reports the observation of a 2 x 2 chiral CDW and the strong suppression of Te-5p hole-band backscattering in monolayer 1T-TiTe2 using scanning tunneling microscopy. Theoretical calculations show that the chirality comes from a helical stacking of the triple-q CDW components and can persist at the two-dimensional limit. The chirality also gives the Te-5p bands an unconventional orbital texture that prohibits electron backscattering. These findings establish TiTe2 as a promising system for manipulating chiral ground states and engineering electronic properties.
Article
Chemistry, Physical
Honglin Wang, Jing Li, Meirong Huang, Jizhe Cui, Zhiying Cheng, Rong Yu, Hongwei Zhu
Summary: In this work, the formation of single-atom alloys (SAAs) by thermal evaporation technique was observed for the first time. The formation mechanism of SAAs prepared using this method was elucidated through density functional theory calculations. Thermal evaporation offers convenience, cost-efficiency, and universality in preparing SAAs with multiple single atoms.
Article
Physics, Multidisciplinary
Jizhang Wang, Hui Zeng, Wenhui Duan, Huaqing Huang
Summary: This study proposes an efficient method to detect the Neel vector in two-dimensional antiferromagnetic materials using the intrinsic nonlinear Hall effect. The results show that the nonlinear Hall effect can be accurately controlled by shifting the chemical potential, and it exhibits a 2g-periodic dependence on the Neel vector orientation. These findings provide flexible design schemes and promising material platforms for spintronic memory device applications based on two-dimensional antiferromagnets.
PHYSICAL REVIEW LETTERS
(2023)
Article
Multidisciplinary Sciences
Heng Wang, Yuying Zhu, Zhonghua Bai, Zechao Wang, Shuxu Hu, Hong-Yi Xie, Xiaopeng Hu, Jian Cui, Miaoling Huang, Jianhao Chen, Ying Ding, Lin Zhao, Xinyan Li, Qinghua Zhang, Lin Gu, X. J. Zhou, Jing Zhu, Ding Zhang, Qi-Kun Xue
Summary: Josephson tunneling in twisted cuprate junctions provides a test for the pairing symmetry in high temperature superconductivity, but experiments on Bi2Sr2CaCu2O8+x (Bi-2212) have yielded conflicting results. This study focuses on Bi2Sr2-xLaxCuO6+y (Bi-2201) junctions with single CuO2 planes and demonstrates strong Josephson tunneling and conventional temperature dependence at carefully calibrated twist angles around 45 degrees. The observed Fraunhofer diffraction patterns and integer Fiske steps suggest the presence of an isotropic pairing component.
NATURE COMMUNICATIONS
(2023)
