检索结果-内蒙古大学图书馆

Orbital Magneto-Nonlinear Anomalous Hall Effect in Kagome Magnet Fe3Sn2

Physical Review Letters 2024年第10期132卷 106601-106601页

作者： Lujunyu Wang Jiaojiao Zhu Haiyun Chen Hui Wang Jinjin Liu Yue-Xin Huang Bingyan Jiang Jiaji Zhao Hengjie Shi Guang Tian Haoyu Wang Yugui Yao Dapeng Yu Zhiwei Wang Cong Xiao Shengyuan A. Yang Xiaosong Wu State Key Laboratory for Artificial Microstructure and Mesoscopic Physics Frontiers Science Center for Nano-optoelectronics Peking University Beijing 100871 China Research Laboratory for Quantum Materials Singapore University of Technology and Design Singapore 487372 Singapore Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore 637371 Singapore Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) School of Physics Beijing Institute of Technology Beijing 100081 China School of Sciences Great Bay University Dongguan 523000 China Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems Beijing Institute of Technology Beijing 100081 China Material Science Center Yangtze Delta Region Academy of Beijing Institute of Technology Jiaxing China Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Shenzhen 518055 China Institute of Applied Physics and Materials Engineering University of Macau Taipa Macau China Department of Physics The University of Hong Kong Hong Kong China HKU-UCAS Joint Institute of Theoretical and Computational Physics at Hong Kong China Collaborative Innovation Center of Quantum Matter Beijing 100871 China Peking University Yangtze Delta Institute of Optoelectronics Nantong 226010 Jiangsu China

It has been theoretically predicted that perturbation of the Berry curvature by electromagnetic fields gives rise to intrinsic nonlinear anomalous Hall effects that are independent of scattering. Two types of nonlinear anomalous Hall effects are expected. The electric nonlinear Hall effect has recently begun to receive attention, while very few studies are concerned with the magneto-nonlinear Hall effect. Here, we combine experiment and first-principles calculations to show that the kagome ferromagnet Fe3Sn2 displays such a magneto-nonlinear Hall effect. By systematic field angular and temperature-dependent transport measurements, we unambiguously identify a large anomalous Hall current that is linear in both applied in-plane electric and magnetic fields, utilizing a unique in-plane configuration. We clarify its dominant orbital origin and connect it to the magneto-nonlinear Hall effect. The effect is governed by the intrinsic quantum geometric properties of Bloch electrons. Our results demonstrate the significance of the quantum geometry of electron wave functions from the orbital degree of freedom and open up a new direction in Hall transport effects.

关键词： Anomalous Hall effect Electronic structure Topological materials Kagome lattice Soft magnets Weyl semimetal

来源：评论

学校读者我要写书评

暂无评论

Two-dimensional Dirac semiconductor and its material realization

引用

Physical Review B 2022年第3期105卷 035126-035126页

作者： Botao Fu Da-Shuai Ma Chao He Yong-Hong Zhao Zhi-Ming Yu Yugui Yao College of Physics and Electronic Engineering Center for Computational Sciences Sichuan Normal University Chengdu 610068 China Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement (MOE) School of Physics Beijing Institute of Technology Beijing 100081 China Beijing Key Lab of Nanophotonics & Ultrafine Optoelectronic Systems School of Physics Beijing Institute of Technology Beijing 100081 China Department of Physics Southern University of Science and Technology Shenzhen 518055 China

We propose a new concept of a two-dimensional (2D) Dirac semiconductor which is characterized by the emergence of four-fold degenerate band crossings near the band edge, and provide a generic approach to realize this novel semiconductor in the community of material science. Based on the first-principle calculations and symmetry analysis, we discover recently synthesized triple-layer (TL) Bi2OS2 is such a 2D Dirac semiconductor that features a Dirac cone at the X/Y point, protected by a centrosymmetric nonsymmorphic space group. Due to the sandwich-like structure, each Dirac fermion in TL-Bi2OS2 can be regarded as a combination of two Weyl fermions with opposite chiralities, degenerate in momentum-energy space but separated in real space. Such a 2D Dirac semiconductor carries hidden layer-dependent helical spin textures. Moreover, novel topological phase transitions are flexibly achieved in TL-Bi2OS2: (i) a vertical electric field can drive it into the Weyl semiconductor with switchable spin polarization direction; (ii) an extensive strain is able to generate ferroelectric polarization and actuate it into the Weyl nodal ring around the X point and into another type of four-fold degenerate point at the Y point. Our work extends the Dirac fermion into semiconductor systems and provides a promising avenue to integrate spintronics and optoelectronics in topological materials.

关键词： Electronic structure First-principles calculations Spin-orbit coupling Topological materials

来源：评论

学校读者我要写书评

暂无评论

Bhatia-Davis formula in the quantum speed limit

引用

Physical Review A 2021年第5期104卷 052432-052432页

作者： Jing Liu Zibo Miao Libin Fu Xiaoguang Wang MOE Key Laboratory of Fundamental Physical Quantities Measurement PGMF and School of Physics Huazhong University of Science and Technology Wuhan 430074 China School of Mechanical Engineering and Automation Harbin Institute of Technology Shenzhen Shenzhen 518055 China Graduate School China Academy of Engineering Physics Beijing 100193 China Zhejiang Institute of Modern Physics Department of Physics Zhejiang University Hangzhou 310027 China

The Bhatia-Davis theorem provides a useful upper bound for the variance in mathematics, and in quantum mechanics, the variance of a Hamiltonian is naturally connected to the quantum speed limit due to the Mandelstam-Tamm bound. Inspired by this connection, we construct a formula, referred to as the Bhatia-Davis formula, for the characterization of the quantum speed limit in the Bloch representation. We first prove that the Bhatia-Davis formula is an upper bound for a recently proposed operational definition of the quantum speed limit, which means it can be used to reveal the closeness between the timescale of certain chosen states to the systematic minimum timescale. In the case of the largest target angle, the Bhatia-Davis formula is proved to be a valid lower bound for the evolution time to reach the target when the energy structure is symmetric. Regarding few-level systems, it is also proved to be a valid lower bound for any state in two-level systems with any target, and for most mixed states with large target angles in equally spaced three-level systems.

关键词： Quantum foundations Quantum theory Resource theories

来源：评论

学校读者我要写书评

暂无评论

Smart mechanoluminescent phosphors: A review of zinc sulfide-based materials for advanced mechano-optical applications

Responsive Materials

引用

Responsive Materials 2024年第3期2卷

作者： Zefeng Huang Xu Li Tianlong Liang Biyun Ren Xianhui Zhang Yuantian Zheng Qi'an Zhang Ziyi Fang Mingzhi Wu Maryam Zulfiqar Liqing Jing Sicen Qu Bing Chen Jiulin Gan Dengfeng Peng Shenzhen Key Laboratory of Intelligent Optical Measurement and Detection Shenzhen University Shenzhen China Key Laboratory of Optoelectronic Devices and Systems of Ministry of Education and Guangdong Province College of Physics and Optoelectronic Engineering Shenzhen University Shenzhen China College of Physical Education Shenzhen University Shenzhen China College of Electronic and Optical Engineering and College of Flexible Electronics (Future Technology) Nanjing University of Posts and Telecommunications Nanjing China State Key Laboratory of Luminescent Material and Devices and Guangdong Provincial Key Laboratory of Fibre Laser Materials and Applied Techniques Guangdong Engineering Technology Research and Development Center of Special Optical Fiber Materials and Devices South China University of Technology Guangzhou China Shenzhen Key Laboratory of Photonics and Biophotonics Shenzhen University Shenzhen China

The quest for mechanoluminescence (ML) in zinc sulfide (ZnS) spans more than a century, initially sparked by observations of natural minerals. There has been a resurgence in research into ML materials in recent decades, driven by advances in optoelectronic technologies and a deeper understanding of their luminescent properties under mechanical stress. ZnS, in particular, has garnered attention owing to its remarkable ability to sustain luminescence after more than 100,000 mechanical stimulations, positioning it as a standout candidate for optoelectronic applications. In contrast to conventional photoluminescent and electroluminescent light sources, ZnS composite elastomers have emerged as flexible, stretchable self-powered light sources with considerable practical implications. This review introduces the development history, ML mechanisms, prototype ML devices, ZnS-based ML material preparation methods, and their diverse applications spanning environmental mechanical-to-optical energy conversion, E-signatures, anti-counterfeiting, wearable information sensing devices, advanced battery-free displays, biomedical imaging, and optical fiber sensors for human–computer interactions, among others. By integrating insights from ML-optics, mechanics, and flexible optoelectronics, and by summarizing pertinent perspectives on current scientific challenges, application technology hurdles, and potential solutions for emerging scientific frontiers, this review aims to furnish fundamental guidance and conceptual frameworks for the design, advancement, and cutting-edge application of novel mechanoluminescent materials.

关键词： flexible optoelectronics mechanoluminescence self-powered light source stress sensing zinc sulfide

来源：评论

学校读者我要写书评

暂无评论

Confined Heterojunction in Hollow-Structured TiO2and Its Directed Effect in Photodriven Seawater Splitting

引用

ACS Nano 2023年第18期17卷 18217-18226页

作者： Shi-Tian Xiao Si-Ming Wu Lu Wu Yu Dong Jia-Wen Liu Li-Ying Wang Xin-Yi Chen Yi-Tian Wang Ge Tian Gang-Gang Chang Menny Shalom Paolo Fornasiero Xiao-Yu Yang State Key Laboratory of Advanced Technology for Materials Synthesis and Processing & School of Materials Science and Engineering & School of Chemistry Chemical Engineering and Life Sciences & Shenzhen Research Institute & Laoshan Laboratory Wuhan University of Technology Wuhan 430070 China Hubei Collaborative Innovation Center for Advanced Organic Chemical Materials Ministry of Education Key Laboratory for the Synthesis and Application of Organic Functional Molecules College of Chemistry and Chemical Engineering Hubei University Wuhan 430062 China State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics National Center for Magnetic Resonance in Wuhan Wuhan Institute of Physics and Mathematics Innovation Academy for Precision Measurement Science and Technology Chinese Academy of Sciences Wuhan 430071 China Department of Chemistry and Ilse Katz Institute for Nanoscale Science and Technology Ben-Gurion University of the Negev Beer-Sheva 8410501 Israel Department of Chemical and Pharmaceutical Sciences University of Trieste and ICCOM-CNR and INSTM Trieste Research Units Via L. Giorgieri 1 34127 Trieste Italy

The high salinity of seawater often strongly affects the activity and stability of photocatalysts utilized for photodriven seawater splitting. The current investigation is focused on the photocatal...

关键词：

来源：评论

学校读者我要写书评

暂无评论

Evidence chain for time-reversal symmetry-breaking kagome superconductivity

arXiv

引用

arXiv 2024年

作者： Deng, Hanbin Liu, Guowei Guguchia, Z. Yang, Tianyu Liu, Jinjin Wang, Zhiwei Xie, Yaofeng Shao, Sen Ma, Haiyang Liège, William Bourdarot, Frédéric Yan, Xiao-Yu Qin, Hailang Mielke, C. Khasanov, R. Luetkens, H. Wu, Xianxin Chang, Guoqing Liu, Jianpeng Christensen, Morten Holm Kreisel, Andreas Andersen, Brian Møller Huang, Wen Zhao, Yue Bourges, Philippe Yao, Yugui Dai, Pengcheng Yin, Jia-Xin Department of Physics Southern University of Science and Technology Guangdong Shenzhen China Laboratory for Muon Spin Spectroscopy Paul Scherrer Institute Villigen PSICH-5232 Switzerland Centre for Quantum Physics Key Laboratory of Advanced Optoelectronic Quantum Architecture and Measurement MOE School of Physics Beijing Institute of Technology Beijing China Beijing Key Lab of Nanophotonics and Ultrafine Optoelectronic Systems Beijing Institute of Technology Beijing China Department of Physics and Astronomy Rice University HoustonTX77005 United States Division of Physics and Applied Physics School of Physical and Mathematical Sciences Nanyang Technological University Singapore637371 Singapore Shenzhen China Université Paris-Saclay CNRS-CEA Laboratoire Léon Brillouin Gif-sur-Yvette91191 France Université Grenoble Alpes CEA INAC MEM MDN GrenobleF-38000 France CAS Key Laboratory of Theoretical Physics Institute of Theoretical Physics Chinese Academy of Sciences Beijing China School of Physical Science and Technology ShanghaiTech University Shanghai201210 China Niels Bohr Institute University of Copenhagen CopenhagenDK-2200 Denmark Shenzhen Institute for Quantum Science and Engineering Southern University of Science and Technology Guangdong Shenzhen518055 China

Superconductivity and magnetism are antagonistic quantum matter, while their intertwining has long been considered in frustrated-lattice systems1-3. In this work, we utilize scanning tunneling microscopy and muon spin resonance to discover time-reversal symmetry-breaking superconductivity in kagome metal Cs(V,Ta)3Sb5, where the Cooper pairing exhibits magnetism and is modulated by it. In the magnetic channel, we observe spontaneous internal magnetism in a full-gap superconducting state. Under perturbations of inverse magnetic fields, we detect a time-reversal asymmetrical interference of Bogoliubov quasi-particles at a circular vector. At this vector, the pairing gap spontaneously modulates, which is distinct from pair density waves occurring at a point vector and consistent with the theoretical proposal of unusual interference effect under time-reversal symmetry-breaking. The correlation between internal magnetism, Bogoliubov quasi-particles, and pairing modulation provides a chain of experimental clues for time-reversal symmetry-breaking kagome superconductivity. © 2024, CC BY.

关键词： Scanning tunneling microscopy

来源：评论

学校读者我要写书评

暂无评论

Antiferroelectric Oxide Thin-Films: Fundamentals, Properties, and Applications

arXiv

引用

arXiv 2023年

作者： Si, Yangyang Zhang, Tianfu Liu, Chenhan Das, Sujit Xu, Bin Burkovsky, Roman G. Wei, Xian-Kui Chen, Zuhuang School of Materials Science and Engineering Harbin Institute of Technology Shenzhen518055 China Micro- and Nano-scale Thermal Measurement Thermal Management Laboratory School of Energy and Mechanical Engineering Nanjing Normal University Nanjing210023 China Material Research Centre Indian Institute of Science Bangalore560012 India Jiangsu Key Laboratory of Thin Films School of Physical Science and Technology Soochow University Suzhou215006 China Peter the Great Saint-Petersburg Polytechnic University 29 Politekhnicheskaya St. Petersburg195251 Russia College of Chemistry and Chemical Engineering Xiamen University Xiamen361005 China Xiamen361005 China

Antiferroelectrics have received blooming interests because of a wide range of potential applications in energy storage, solid-state cooling, thermal switch, transducer, actuation, and memory devices. Many of those applications are the most prospective in thin film form. The antiferroelectric ordering in thin films is highly sensitive to a rich set of factors, such as lattice strain, film thickness, surface and interface effects as well as film stoichiometry. To unlock the full potential of these materials and design high-quality thin films for functional devices, a comprehensive and systematic understanding of their behavior is essential. In conjunction with the necessary fundamental background of antiferroelectrics, we review recent progress on various antiferroelectric oxide thin films, the key parameters that trigger their phase transition and the device applications that rely on the robust responses to electric, thermal, and optical stimuli. Current challenges and future perspectives highlight new and emerging research directions in this field. It is hoped that this review can boost the development of antiferroelectric thin-film materials and device design, stimulating more researchers to explore the unknowns together. © 2023, CC BY-NC-ND.

关键词： Thin films

来源：评论

学校读者我要写书评

暂无评论

Assessing distribution features of fibrous structures using Mueller matrix derived parameters: A quantitative method for breast carcinoma tissues detection and staging 17

Assessing distribution features of fibrous structures using ...

引用

Dynamics and Fluctuations in Biomedical Photonics XVII 2020

作者： Shen, Yuanxing Sheng, Wei He, Honghui Li, Weipeng Ma, Hui Guangdong Research Center of Polarization Imaging and Measurement Engineering Technology Shenzhen Key Laboratory for Minimal Invasive Medical Technologies Institute of Optical Imaging and Sensing Tsinghua Shenzhen International Graduate School Tsinghua University Shenzhen518055 China Department of Biomedical Engineering Tsinghua University Beijing100084 China Department of Physics Tsinghua University Beijing100084 China

ISBN: (纸本)9781510632417

Breast cancer is a serious threat to women worldwide due to its high incidence and mortality. The early detection is very crucial for the treatment of breast cancer. Currently, for breast cancer patients, mammography and stereotactic needle biopsy followed by time-consuming pathological observations are the primary diagnostic approaches. In our previous study, it was found that the characteristic features of breast carcinoma tissues often include fibrous structures induced by inflammatory reactions, which can be quantitatively evaluated by polarimetric techniques. In this study, we further measure the transmission Mueller matrix microscopic images of 30 breast ductal tissue samples at different progression stages. We calculate the Mueller matrix derived parameters, which can provide the quantitative information on the location, density and distribution behavior of the fibrous structures in the tissues. To evaluate the distribution behavior of fibrous structures more quantitatively and precisely, we also analyze the parameters δ and θ using the gray level cooccurrence matrix (GLCM) analyzing method. The results demonstrate that, the GLCM features Contrast, Energy, Correlation and Homogeneity of δ and θ can be used to describe different textures of fibers distributions among the healthy, ductal carcinoma in situ (DCIS) and invasive ductal carcinoma (IDC) tissue samples, whereas the parameters of unpolarized light intensity images show no prominent differences. The Mueller matrix derived parameters combined with image analyzing methods can be used for label-free detecting and quantitative staging of breast carcinoma tissues, which can be helpful for clinical diagnosis. © COPYRIGHT SPIE. Downloading of the abstract is permitted for personal use only.

关键词： Matrix algebra

来源：评论

学校读者我要写书评

暂无评论

Manipulating electrochemical phosphate recovery from acidic wastewater for synthesizing LiFePO4/C cathode material

引用

Water Research 2025年 283卷 123839页

作者： Song, Bingnan Chen, Wei Pu, Ying Li, Weiquan Zhan, Zhengshuo Fang, Haisheng Lei, Yang Shenzhen Key Laboratory of Precision Measurement and Early Warning Technology for Urban Environmental Health Risks School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen518055 China School of Environmental and Material Engineering Yantai University Yantai264005 China Ganjiang Innovation Academy Chinese Academy of Sciences Ganzhou341119 China

Phosphorus (P) recovery from wastewater offers a sustainable solution for mitigating pollution and securing resources for applications like lithium-ion batteries, where ferric phosphate is a valuable precursor. This study evaluates iron electrolysis for P removal and recovery from acidic wastewater with high phosphate concentrations and medium Ca²⁺ levels. The results suggested that effective P removal and high-purity iron phosphate production can be achieved by varying initial pH, current density, and oxidation conditions. Importantly, slow Fe release rates (0.02–0.04 mmol L⁻¹ min⁻¹) favored ferric phosphate formation (71%–77% removal), while faster rates (0.16–0.46 mmol L⁻¹ min⁻¹) predominantly produced vivianite (∼ 65% removal). In addition, air flush can enhance dissolved oxygen flux, achieving 89% P removal under rapid Fe release but with mixed products. H₂O₂ addition improved in situ Fe(II) oxidation, achieving 92% P removal and purer ferric phosphate. Compared to chemical precipitation, which required pH adjustment and suffered from Ca co-precipitation, iron electrolysis produced purer ferric phosphate directly, without pH pre-adjustment. The recovered ferric phosphate showed excellent potential as a precursor for high-performance LiFePO₄/C cathode material. These findings position iron electrolysis as a promising approach for sustainable P recovery and resource valorization from wastewater. © 2025 Elsevier Ltd

关键词： Wastewater reclamation

来源：评论

学校读者我要写书评

暂无评论

Turbulent transport and dry deposition of air pollutants over real urban surfaces: A building-resolving large-eddy simulation study

引用

Sustainable Cities and Society 2025年 129卷

作者： Wai-Chi Cheng Tzung-May Fu Shenzhen Key Laboratory of Precision Measurement and Early Warning Technology for Urban Environmental Health Risks School of Environmental Science and Engineering Southern University of Science and Technology Shenzhen Guangdong 518055 China Coastal Atmosphere and Climate of the Greater Bay Area Observation and Research Station of Guangdong Province Southern University of Science and Technology Shenzhen 518055 China National Center for Applied Mathematics Shenzhen (NCAMS) Shenzhen Guangdong 518055 China

The parameterization of turbulent transport and dry deposition of air pollutants in the atmospheric surface layer (ASL) is critical for regional air quality modeling. These processes are typically parametrized using Monin-Obukhov similarity theory (MOST), which assumes flat, homogeneous surfaces. However, modern urban environments often feature high-rise buildings with heights comparable to the ASL depth ( ∼ 100 m), challenging the validity of MOST-based approaches. In this study, we investigate the influence of urban geometry on turbulent pollutant transport in the ASL using a building-resolving large-eddy simulation (LES) framework. We simulate the dry deposition of ultrafine aerosol particles over four distinct urban surfaces with varying morphological characteristics. By explicitly resolving turbulent transport within urban canopies and incorporating aerosol deposition on building roofs and façades, our results demonstrate that traditional MOST-based parameterizations overestimate turbulent transport over urban surfaces and underestimate aerodynamic resistance by approximately 73%. These results highlight the need to integrate urban surface characteristics into the parameterization of dry deposition to improve the accuracy of urban air quality models.

关键词： Air quality

来源：评论

学校读者我要写书评

暂无评论

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案：

请选择收藏分类：

通借通还

建议与咨询 留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

时间限定

文献类型

馆藏选择

核心期刊

语言

文献类型

帮助

文字说明：

检索规则说明：

检索范例：

分类表

所选分类

限定检索结果

文献类型

馆藏范围

日期分布

学科分类号

主题

机构

作者

语言

请选择保存的检索档案： 新增检索档案 确定 取消

请选择收藏分类： 新增自定义分类 确定 取消

通借通还

建议与咨询留下您的常用邮箱和电话号码，以便我们向您反馈解决方案和替代方法

请选择保存的检索档案：

请选择收藏分类：