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中国物理B（英文版）
中国物理B（英文版）

欧阳钟灿

月刊

1674-1056

010-82649026 82649519

100080

北京603信箱

中国物理B（英文版）/Journal Chinese Physics　BCSCDCSTPCD北大核心EISCI
查看更多>>该刊与《物理学报》是中国物理学会主办的物理学英文和中文的综合性国际学术月刊。刊登物理学科领域中，国内外未曾公开发表的具有创新性的科学研究最新成果。内容包括物理学各领域的理论、实验技术及应用。两刊内容不重复。两刊以论文水平高、创新性强，发表速度快的特点，受到国内外物理学工作者的好评和关注。被国际著名的SCI等10种以上检索系统收录。曾多次被评为中国科学院优秀期刊一等奖，1999，2003，2005年荣获第一、第二和第三届国家期刊奖，2001年被国家新闻出版总署评为“中国期刊方阵”中的双高（高知名度、高学术水平）期刊。2001，2002，2003年两刊都评为百种中国杰出期刊。
正式出版
收录年代

    Physics through the microscope

    Stephen J.PennycookRyo Ishikawa武海军赵晓续...
    1-11页
    查看更多>>摘要：The electron microscope provides numerous insights into physics,from demonstrations of fundamental quantum mechanical principles to the physics of imaging and materials.It reveals the atomic and electronic structure of key regions such as defects and interfaces.We can learn the underlying physics governing properties,and gain insight into how to synthesize new materials with improved properties.Some recent advances and possible future directions are discussed.
      原文链接:
    • 万方数据
    • 维普

    Atomic-level quantitative analysis of electronic functional materials by aberration-corrected STEM

    曲万博赵志昊杨宇轩张杨...
    12-25页
    查看更多>>摘要：The stable sub-angstrom resolution of the aberration-corrected scanning transmission electron microscope(AC-STEM)makes it an advanced and practical characterization technique for all materials.Owing to the prosperous advance-ment in computational technology,specialized software and programs have emerged as potent facilitators across the entirety of electron microscopy characterization process.Utilizing advanced image processing algorithms promotes the rectifica-tion of image distortions,concurrently elevating the overall image quality to superior standards.Extracting high-resolution,pixel-level discrete information and converting it into atomic-scale,followed by performing statistical calculations on the physical matters of interest through quantitative analysis,represent an effective strategy to maximize the value of electron microscope images.The efficacious utilization of quantitative analysis of electron microscope images has become a pro-gressively prominent consideration for materials scientists and electron microscopy researchers.This article offers a concise overview of the pivotal procedures in quantitative analysis and summarizes the computational methodologies involved from three perspectives:contrast,lattice and strain,as well as atomic displacements and polarization.It further elaborates on practical applications of these methods in electronic functional materials,notably in piezoelectrics/ferroelectrics and ther-moelectrics.It emphasizes the indispensable role of quantitative analysis in fundamental theoretical research,elucidating the structure-property correlations in high-performance systems,and guiding synthesis strategies.
      原文链接:
    • 万方数据
    • 维普

    Making the link between ADF and 4D STEM:Resolution,transfer and coherence

    Peter D.NellistTimothy J.Penny cook
    26-33页
    查看更多>>摘要：Steve Pennycook is a pioneer in the application of high-resolution scanning transmission electron microscopy(STEM)and in particular the use of annular dark-field(ADF)imaging.Here we show how a general framework for 4D STEM allows clear links to be made between ADF imaging and the emerging methods for reconstructing images from 4D STEM data sets.We show that both ADF imaging and ptychographical reconstruction can be thought of in terms of integrating over the overlap regions of diffracted discs in the detector plane.This approach allows the similarities in parts of their transfer functions to be understood,though we note that the transfer functions for ptychographic imaging cannot be used as a measure of information transfer.We also show that conditions of partial spatial and temporal coherence affect ADF imaging and ptychography similarly,showing that achromatic interference can always contribute to the image in both cases,leading to a robustness to partial temporal coherence that has enabled high-resolution imaging.
      原文链接:
    • 万方数据
    • 维普

    Real-time four-dimensional scanning transmission electron microscopy through sparse sampling

    A W RobinsonJ WellsA MoshtaghpourD Nicholls...
    34-38页
    查看更多>>摘要：Four-dimensional scanning transmission electron microscopy(4-D STEM)is a state-of-the-art image acquisition mode used to reveal high and low mass elements at atomic resolution.The acquisition of the electron momenta at each real space probe location allows for various analyses to be performed from a single dataset,including virtual imaging,electric field analysis,as well as analytical or iterative extraction of the object induced phase shift.However,the limiting factor in 4-D STEM is the speed of acquisition which is bottlenecked by the read-out speed of the camera,which must capture a convergent beam electron diffraction(CBED)pattern at each probe position in the scan.Recent developments in sparse sampling and image inpainting(a branch of compressive sensing)for STEM have allowed for real-time recovery of sparsely acquired data from fixed monolithic detectors,Further developments in compressive sensing for 4-D STEM have also demonstrated that acquisition speeds can be increased,i.e.,live video rate 4-D imaging is now possible.In this work,we demonstrate the first practical implementations of compressive 4-D STEM for real-time inference on two different scanning transmission electron microscopes.
      原文链接:
    • 万方数据
    • 维普

    Polarization pinning at antiphase boundaries in multiferroic YbFeO3

    Guodong RenPravan OmprakashXin LiYu Yun...
    39-45页
    查看更多>>摘要：The switching characteristics of ferroelectrics and multiferroics are influenced by the interaction of topological defects with domain walls.We report on the pinning of polarization due to antiphase boundaries in thin films of the multiferroic hexagonal YbFeO3.We have directly resolved the atomic structure of a sharp antiphase boundary(APB)in YbFeO3 thin films using a combination of aberration-corrected scanning transmission electron microscopy(STEM)and total energy calculations based on density-functional theory(DFT).We find the presence of a layer of FeO6 octahedra at the APB that bridges the adjacent domains.STEM imaging shows a reversal in the direction of polarization on moving across the APB,which DFT calculations confirm is structural in nature as the polarization reversal reduces the distortion of the FeO6 octahedral layer at the APB.Such APBs in hexagonal perovskites are expected to serve as domain-wall pinning sites and hinder ferroelectric switching of the domains.
      原文链接:
    • 万方数据

    Generation of broadband polarization-orthogonal photon pairs via the dispersion-engineered thin-film lithium niobate waveguide

    张继宁张同宇端家晨龚彦晓...
    46-51页
    查看更多>>摘要：Broadband photon pairs are highly desirable for quantum metrology,quantum sensing,and quantum communication.Such sources are usually designed through type-0 phase-matching spontaneous parametric down-conversion(SPDC)that makes the photon pairs hard to separate in the frequency-degenerate case and thus limits their applications.In this paper,we design a broadband frequency-degenerate telecom-band photon pair source via the type-Ⅱ SPDC in a dispersion-engineered thin-film lithium niobate waveguide,where the polarization modes of photon pairs are orthogonal and thus are easily separated deterministically.With a 5-mm-long waveguide,our design can achieve a bandwidth of 5.56 THz(44.8 nm),which is 8.6 times larger than that of the bulk lithium niobate,and the central wavelength can be flexibly adjusted.Our design is a promising approach towards high-quality integrated photon sources and may have wide applications in photonic quantum technologies.
      原文链接:
    • 万方数据
    • 维普

    Improved model on asynchronous measurement-device-independent quantum key distribution with realistic devices

    孙铭烁张春辉章睿周星宇...
    52-56页
    查看更多>>摘要：In principle,the asynchronous measurement-device-independent quantum key distribution(AMDI-QKD)can surpass the key rate capacity without phase tracking and phase locking.However,practical imperfections in sources or detections would dramatically depress its performance.Here,we present an improved model on AMDI-QKD to reduce the influence of these imperfections,including intensity fluctuation,the afterpulse effect,and the dead time of detectors.Furthermore,we carry out corresponding numerical simulations.Simulation results show that,by implementing our present work,it can have more than 100 km longer secure transmission distance and one order of magnitude enhancement in the key generation rate after 320 km compared with the standard method.Moreover,our model can still break the Pirandola-Laurenza-Ottaviani-Banchi(PLOB)bound even under realistic experimental conditions.
      原文链接:
    • 万方数据
    • 维普

    In situ non-destructive measurement of Josephson junction resistance using fritting contact technique

    杜磊陶浩然郭亮亮张海峰...
    57-61页
    查看更多>>摘要：Conventional four-probe methods for measuring the resistance of Josephson junctions can damage superconducting thin films,making them unsuitable for frequency measurements of superconducting qubits.In this study,we present a custom probe station measurement system that employs the fritting contact technique to achieve in situ,non-destructive measurements of Josephson junction resistance.Our experimental results demonstrate that this method allows for accurate prediction of qubit frequency with an error margin of 17.2 MHz.Moreover,the fritting contact technique does not signifi-cantly affect qubit coherence time or the integrity of the superconducting film,confirming its non-destructive nature.This innovative approach provides a dependable foundation for frequency tuning and addressing frequency collision issues,thus supporting the advancement and practical deployment of superconducting quantum computing.
      原文链接:
    • 万方数据
    • 维普

    Light emission from multiple self-trapped excitons in one-dimensional Ag-based ternary halides

    颉家豪李泽唯王晟侨张立军...
    62-69页
    查看更多>>摘要：Ternary metal halides based on Cu(Ⅰ)and Ag(Ⅰ)have attracted intensive attention in optoelectronic applications due to their excellent luminescent properties,low toxicity,and robust stability.While the self-trapped excitons(STEs)emission mechanisms of Cu(Ⅰ)halides are well understood,the STEs in Ag(Ⅰ)halides remain less thoroughly explored.This study explores the STE emission efficiency within the A2 AgX3(A=Rb,Cs;X=Cl,Br,I)system by identifying three distinct STE states in each material and calculating their configuration coordinate diagrams.We find that the STE emission efficiency in this system is mainly determined by STE stability and influenced by self-trapping and quenching barriers.Moreover,we investigate the impact of structural compactness on emission efficiency and find that the excessive electron-phonon coupling in this system can be reduced by increasing the structural compactness.The atomic packing factor is identified as a low-cost and effective descriptor for predicting STE emission efficiency in both Cs2AgX3 and Rb2AgX3 systems.These findings can deepen our understanding of STE behavior in metal halide materials and offer valuable insights for the design of efficient STE luminescent materials.The datasets presented in this paper are openly available in Science Data Bank at https://doi.org/10.57760/sciencedb.12094.
      原文链接:
    • 万方数据
    • 维普

    Optical design of the time-resolved ARPES beamline of the new material spectroscopy experimental station for the update of CAEP THz-FEL facility

    杜亮亮孟立民李江朱礼国...
    70-74页
    查看更多>>摘要：The Chinese Academy of Engineering Physics Terahertz Free Electron Laser Facility(CAEP THz FEL,CTFEL)is the only high-average power free electron laser terahertz source based on superconducting accelerators in China.The update of the CTFEL is now undergoing and will expand the frequency range from 0.1-4.2 THz to 0.1-125 THz.Two experimental stations for material spectroscopy and biomedicine will be built.A high harmonic generation(HHG)lightsource based beamline at the material spectroscopy experimental station for time-resolved angle-resolved photoemission spectroscopy(ARPES)research will be constructed and the optical design is presented.The HHG lightsource covers the extreme ul-traviolet(XUV)photon energy range of 20-50 eV.A Czemy-Turner monochromator with two plane gratings worked in conical diffraction configuration is employed to maintain the transmission efficiency and preserve the pulse time duration.The calculated beamline transmission efficiency is better than 5％in the whole photon energy range.To our knowledge,this is the first time in China to combine THz-infrared FEL with HHG light source,and this experimental station will be a powerful and effective instrument that will give new research opportunities in the future for users doing research on the dynamic evolution of the excited electron band structure of a material's surface.
      原文链接:
    • 万方数据
    • 维普