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东北大学学报(自然科学版) 2000年第2期 157-157页

作者：陈星秋丁学勇刘新郑海

General principles to high-throughput constructing two-dimensional carbon allotropes

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Chinese Physics B 2020年第3期29卷 375-384页

作者： Qing Xie Lei Wang Jiangxu Li Ronghan Li Xing-Qiu Chen Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China University of Chinese Academy of Sciences Beijing 100049China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China

We propose general principles to construct two-dimensional(2D)single-atom-thick carbon *** can be viewed as the generalization of patterning Stone–Walse defects(SWDs)by manipulating bond rotation and of patterning inverse SWDs by adding(or removing)carbon pairs on the pristine graphene,*** these principles,numerous 2D allotropes of carbon can be systematically *** 20 constructed 2D allotropes as prototypical and benchmark examples,besides nicely reproducing all well-known ones,such as pentaheptites,T-graphene,OPGs,etc,we still discover 13 new *** structural,thermodynamic,dynamical,and electronic properties are calculated by means of first-principles *** these allotropes are metastable in energy compared with that of graphene and,except for OPG-A and C3-10-H allotropes,the other phonon spectra of 18 selected allotropes are dynamically *** particular,the proposed C3-11 allotrope is energetically favorable than graphene when the temperature is increased up to 1043 K according to the derived free *** electronic band structures demonstrate that(i)the C3-8 allotrope is a semiconductor with an indirect DFT band gap of 1.04 e V,(ii)another unusual allotrope is C3-12 which exhibits a highly flat band just crossing the Fermi level,(iii)four allotropes are Dirac semimetals with the appearance of Dirac cones at the Fermi level in the lattices without hexagonal symmetry,and(vi)without the spin–orbit coupling(SOC)effect,the hexagonal C3-11 allotrope exhibits two Dirac cones at K and K points in its Brillouin zone in similarity with graphene.

关键词： graphene allotropes phonon spectra semimetal dirac Fermions modeling

Structural, elastic, and electronic properties of topological semimetal WC-type MX family by first-principles calculation

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Chinese Physics B 2019年第7期28卷 78-86页

作者： Sami Ullah Lei Wang Jiangxu Li Ronghan Li Xing-Qiu Chen Shenyang Nutionul Laboratory for Materials Science Institute of Metal Research. Chinese Academy ot Sciences Shenyang 110016. China University of Chinese Academy of Sciences Beijing 100049 China School of Materials Science and Engineering University of Science and Technology of Chinn. Shenyang 110016. China

Recently, the non-centrosymmetric WC-type materials(i.e., MoP, ZrTe, TaN, etc) have attracted extensive interest due to the discovery of their topological *** means of the first-principles calculations, here we have investigated the structural, thermodynamic, elastic, and electronic properties of the WC-type MX compounds(TiS, TiSe, TiTe, ZrS, ZrSe,ZrTe, HfS, HfSe, and HfTe).Among these nine compounds, five of them(TiS, ZrS, ZrSe0.9, ZrTe, and Hf0.92 Se) have been experimentally synthesized to crystallize in the WC-type structure and other four members have never been *** calculations demonstrated that they are all structurally, thermodynamically, and dynamically stable, indicating that all of them should be possibly *** have also derived their elastic constants of single crystalline and their bulk and shear moduli in terms of the *** ***, in similarity to ZrTe, all these compounds have been theoretically derived to be topological *** TiS is unique because of the coexistence of the Dirac nodal lines(DNLs) and sixfold degenerate nodal points(sixfold DNPs), the other eight members are revealed to exhibit coexisted Weyl nodes(WPs) and triply degenerate nodal points(TDNPs).Their electronic and topological properties have been further discussed.

关键词： topological semimetals WC-type materials MX family elastic properties

Pressure-Tunable Large Anomalous Hall Effect in Ferromagnetic Metal LiMn_(6)Sn_(6)

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Chinese Physics Letters 2024年第5期41卷 69-76页

作者：高玲玲赖俊文陈栋裴翠颖王琦赵毅李昌华曹渭征吴珏霏陈宇林陈星秋孙岩 Claudia Felser 齐彦鹏 School of Physical Science and Technology ShanghaiTech UniversityShanghai 201210China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China Max Planck Institute for Chemical Physics of Solids Dresden 01187Germany College of Physics Qingdao UniversityQingdao 266071China ShanghaiTech Laboratory for Topological Physics ShanghaiTech UniversityShanghai 201210China Department of Physics Clarendon LaboratoryUniversity of OxfordParks RoadOxford OX13PUUK School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Shanghai Key Laboratory of High-resolution Electron Microscopy ShanghaiTech UniversityShanghai 201210China

Recently, giant intrinsic anomalous Hall effect(AHE) has been observed in the materials with kagome ***, we systematically investigate the influence of high pressure on the AHE in the ferromagnet LiMn_(6)Sn_(6) with clean Mn kagome lattice. Our in situ high-pressure Raman spectroscopy indicates that the crystal structure of LiMn_(6)Sn_(6) maintains a hexagonal phase under high pressures up to 8.51 GPa. The anomalous Hall conductivity(AHC) σ_(xy)^(A) remains around 150 Ω^(-1)·cm^(-1), dominated by the intrinsic mechanism. Combined with theoretical calculations, our results indicate that the stable AHE under pressure in Li Mn_(6)Sn_(6) originates from the robust electronic and magnetic structure.

关键词： structure mechanism intrinsic

Phononic Weyl Nodal Lines and Weyl Pairs in van der Waals Heavy Fermion Material CeSiI

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Chinese Physics Letters 2024年第10期41卷 97-102页

作者： Fulei Li Tianye Yu Junwen Lai Jiaxi Liu Peitao Liu Xing-Qiu Chen Yan Sun School of Materials Science and Engineering Northeastern UniversityShenyang 110819China Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China

Topological phonon is a new frontier in the field of topological *** from electronic structures,phonons are bosons and most topological phonons are metallic *** studies about topological phonon states were focused on ... 详细信息

关键词： materials. form. topological

Single pair of charge-2 Dirac and charge-2Weyl phonons in GeO_(2)

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Chinese Physics B 2024年第10期33卷 141-145页

作者： Dong-Chang He Jia-Xi Liu Pei-Tao Liu Jiang-Xu Li Xing-Qiu Chen Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China

The presence of a pair of Weyl and Dirac points(WP-DP)in topological semimetal states is intriguing and sought after due to the effects associated with chiral topological ***,identifying these states in real materials poses a significant *** this study,by means of first-principles calculations we predict the coexistence of charge-2 Dirac and charge-2 Weyl phonons at high-symmetry points within a noncentrosymmetric P4_(1)2_(1)2 space ***,we propose GeO_(2)as an ideal candidate for realizing these ***,we observe two distinct surface arcs that connect the Dirac and Weyl points across the entire Brillouin zone,which could facilitate their detection in future experimental *** study not only presents a tangible material for experimentalists to explore the topological properties of WP-DP states but also opens up new avenues in the quest for ideal platforms to study chiral particles.

关键词： ological phonon Weyl points Dirac points

Ab initio study of dynamical properties of U-Nb alloy melt

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Chinese Physics B 2021年第12期30卷 515-522页

作者： Yong-Peng Shi Ming-Feng Liu Yun Chen Wen-Lin Mo Dian-Zhong Li Tao Fa Bin Bai Xiao-Lin Wang Xing-Qiu Chen Shenyang National Laboratory for Materials Science Institute of Metal ResearchChinese Academy of SciencesShenyang 110016China School of Materials Science and Engineering University of Science and Technology of ChinaShenyang 110016China Institute of Materials China Academy of Engineering PhysicsJiangyou 621907China

The U-Nb alloy,as a kind of nuclear material with good corrosion resistance and mechanical properties,plays an important role in the nuclear ***,the experimental measurements and theoretical calculations of many parameters which are essential in describing the dynamical properties of this alloy melt,including density,diffusivity,and viscosity,have not been carried out *** lack of data on the dynamical properties of nuclear materials seriously hinders the high-performance nuclear materials from being developed and *** this work,the dynamical properties of the U-Nb alloy melt are systematically studied by means of ab initio molecular dynamics simulations and their corresponding mathematical models are established,thereby being able to rapidly calculate the densities,diffusion coefficients,viscosities,and their activation energies in the whole U-Nb liquid *** work provides a new idea for investigating the dynamical properties of binary alloy melts,thereby promoting the development of melt research.

关键词： U-Nb alloy melt dynamical properties ab initio study

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产出导向的工程教育类专业课程思政体系构建

高等工程教育研究 2025年第1期 75-82页

作者：施晓秋温州大学

立德对于工程人才培养不可或缺，课程思政作为落实立德树人于课程教学的重要举措，两者在目标与理念上具有一致性，在达成途径上具有相促性。由于缺乏对两者关系的正确认识，使得专业层面课程思政体系的系统性设计缺失，造成或加深课程... 详细信息

立德对于工程人才培养不可或缺，课程思政作为落实立德树人于课程教学的重要举措，两者在目标与理念上具有一致性，在达成途径上具有相促性。由于缺乏对两者关系的正确认识，使得专业层面课程思政体系的系统性设计缺失，造成或加深课程层面在教学定位与目标、内容与方法、考核与评价等方面的问题。立足工程人才培养之立德，融入专业人才培养方案编制，遵循整体性、针对性和覆盖性原则，抓住培养目标、毕业要求和课程体系三个锚点，运用“四阶段”反向设计法，系统规划产出导向的课程思政体系，进一步通过产出导向的单一课程教学设计、多课程关联设计、公共基础与通识课程统一设计，可提升课程思政的实施成效与集聚效应。既为工程教育类专业提供可行方案，也为其它大类专业提供思路与借鉴。

关键词：立德树人课程思政产出导向工程教育专业培养目标毕业要求

基于二维光谱干涉的太赫兹时域光谱单次探测技术

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中国激光 2025年

作者：何文钊陈星宇林庆钢蔡懿曾选科徐世祥光电子器件与系统教育部/广东省重点实验室深圳市微纳光子信息技术重点实验室深圳大学物理与光电工程学院中国计量大学光学与电子科技学院

单次太赫兹时域光谱探测技术可以对某些不可逆或低重复率事件的进行有效探测。本文通过结合二维光谱干涉和自参考共线光谱干涉方案提出了一种新型太赫兹时域光谱单次探测技术。该技术在此前的共线自参考光谱干涉方案基础上，对入射的探... 详细信息

单次太赫兹时域光谱探测技术可以对某些不可逆或低重复率事件的进行有效探测。本文通过结合二维光谱干涉和自参考共线光谱干涉方案提出了一种新型太赫兹时域光谱单次探测技术。该技术在此前的共线自参考光谱干涉方案基础上，对入射的探测光偏振方向及探测晶体角度进行优化，有效提升了探测的光学调制度。通过引入二维光谱干涉替代一维光谱干涉，增大了单次探测的信息容量，进而实现信噪比的提升。实验结果表明，二维光谱干涉的引入使得探测信噪比相比于共线自参考光谱干涉方案提高了近2.2倍，测得信噪比高达166.7:1。该技术能克服传统的电光取样的“过旋”问题，为单次或低重复频率的强太赫兹场及其应用提供了一种有效探测手段。

关键词：太赫兹时域光谱电光取样单次测量干涉光谱