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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
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    Tunable dispersion relations manipulated by strain in skyrmion-based magnonic crystals

    金兆年何宣霖于超方贺男...
    769-774页
    查看更多>>摘要：We theoretically investigate the propagation characteristics of spin waves in skyrmion-based magnonic crystals.It is found that the dispersion relation can be manipulated by strains through magneto-elastic coupling.Especially,the allowed bands and forbidden bands in dispersion relations shift to higher frequency with strain changing from compressive to tensile,while shifting to lower frequency with strain changing from tensile to compressive.We also confirm that the spin wave with specific frequency can pass the magnonic crystal or be blocked by tuning the strains.The result provides an advanced platform for studying the tunable skyrmion-based spin wave devices.
      原文链接:
    • 万方数据
    • 维普

    Magnetic and electronic properties of La-doped hexagonal 4H-SrMnO3

    李杰陈一楠宫诺黄欣...
    775-780页
    查看更多>>摘要：As typical strongly correlated electronic materials,manganites show rich magnetic phase diagrams and electronic structures depending on the doped carrier density.Most previous relevant studies of doped manganites rely on the cu-bic/orthorhombic structures,while the hexagonal structure is much less studied.Here first-principles calculations are employed to investigate the magnetic and electronic structures of La-doped 4H-SrMnO3.By systematically analyzing the two kinds of La-doped positions,our calculations predict that the doped electron with lattice distortion would prefer to form polarons,which contribute to the local magnetic phase transition,nonzero net magnetization,and semiconducting behavior.In addition,the energy gap decreases gradually with increasing doping concentration,indicating a tendency of insulator-metal transition.
      原文链接:
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    Controllable high Curie temperature through 5d transition metal atom doping in CrI3

    彭雪兵司明苏高大强
    781-787页
    查看更多>>摘要：Two-dimensional(2D)CrI3 is a ferromagnetic semiconductor with potential for applications in spintronics.However,its low Curie temperature(Tc)hinders realistic applications of CrI3.Based on first-principles calculations,5d transition metal(TM)atom doping of CrI3(TM@CrI3)is a universally effective way to increase Tc,which stems from the increased magnetic moment induced by doping with TM atoms.Tc of W@CrI3 reaches 254 K,nearly six times higher than that of the host CrI3.When the doping concentration of W atoms is increased to above 5.9％,W@CrI3 shows room-temperature ferromagnetism.Intriguingly,the large magnetic anisotropy energy of W@CrI3 can stabilize the long-range ferromagnetic order.Moreover,TM@CrI3 has a strong ferromagnetic stability.All TM@CrI3 change from a semiconductor to a half-metal,except doping with Au atom.These results provide information relevant to potential applications of CrI3 monolayers in spintronics.
      原文链接:
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    Stacking-dependent exchange bias in two-dimensional ferromagnetic/antiferromagnetic bilayers

    李慧平潘帅唯王喆向斌...
    788-795页
    查看更多>>摘要：A clear microscopic understanding of exchange bias is crucial for its application in magnetic recording,and further progress in this area is desired.Based on the results of our first-principles calculations and Monte Carlo simulations,we present a theoretical proposal for a stacking-dependent exchange bias in two-dimensional compensated van der Waals ferromagnetic/antiferromagnetic bilayer heterostructures.The exchange bias effect emerges in stacking registries that ac-commodate inhomogeneous interlayer magnetic interactions between the ferromagnetic layer and different spin sublattices of the antiferromagnetic layer.Moreover,the on/off switching and polarity reversal of the exchange bias can be achieved by interlayer sliding,and the strength can be modulated using an external electric field.Our findings push the limits of ex-change bias systems to extreme bilayer thickness in two-dimensional van der Waals heterostructures,potentially stimulating new experimental investigations and applications.
      原文链接:
    • 万方数据
    • 维普

    Shape and diffusion instabilities of two non-spherical gas bubbles under ultrasonic conditions

    包乌日汗王德鑫
    796-803页
    查看更多>>摘要：Ultrasonic cavitation involves dynamic oscillation processes induced by small bubbles in a liquid under the influence of ultrasonic waves.This study focuses on the investigation of shape and diffusion instabilities of two bubbles formed during cavitation.The derived equations for two non-spherical gas bubbles,based on perturbation theory and the Bernoulli equa-tion,enable the analysis of their shape instability.Numerical simulations,utilizing the modified Keller-Miksis equation,are performed to examine the shape and diffusion instabilities.Three types of shape instabilities,namely,Rayleigh-Taylor,Rebound,and parametric instabilities,are observed.The results highlight the influence of initial radius,distance,and pertur-bation parameter on the shape and diffusion instabilities,as evidenced by the R0-Pa phase diagram and the variation pattern of the equilibrium curve.This research contributes to the understanding of multiple bubble instability characteristics,which has important theoretical implications for future research in the field.Specifically,it underscores the significance of ini-tial bubble parameters,driving pressure,and relative gas concentration in determining the shape and diffusive equilibrium instabilities of non-spherical bubbles.
      原文链接:
    • 万方数据
    • 维普

    Epitaxial growth of ultrathin gallium films on Cd(0001)

    李佐石明霞姚钢陶敏龙...
    804-810页
    查看更多>>摘要：Growth and electronic properties of ultrathin Ga films on Cd(0001)are investigated by low-temperature scanning tunneling microscopy(STM)and density functional theory(DFT)calculations.It is found that Ga films exhibit the epitaxial growth with the pseudomorphic lxl lattice.The Ga islands deposited at 100 K show a ramified shape due to the suppressed edge diffusion and corner crossing.Furthermore,the majority of Ga islands reveal flat tops and a preferred height of three atomic layers,indicating the electronic growth at low temperature.Annealing to room temperature leads to not only the growth mode transition from electronic growth to conventional Stranski-Krastanov growth,but also the shape transition from ramified islands to smooth compact islands.Scanning tunneling spectroscopy(STS)measurements reveal that the Ga monolayer exhibits metallic behavior.DFT calculations indicate that all the interfacial Ga atoms occupy the energetically favorable hcp-hollow sites of the substrate.The charge density difference analysis demonstrates that the charge transfer from the Cd substrate to the Ga atoms is negligible,and there is weak interaction between Ga atoms and the Cd substrate.These results shall shed important light on fabrication of ultrathin Ga films on metal substrates with novel physical properties.
      原文链接:
    • 万方数据
    • 维普

    High responsivity photodetectors based on graphene/WSe2 heterostructure by photogating effect

    李淑萍雷挺严仲兴王燕...
    811-817页
    查看更多>>摘要：Graphene,with its zero-bandgap electronic structure,is a highly promising ultra-broadband light absorbing material.However,the performance of graphene-based photodetectors is limited by weak absorption efficiency and rapid recombi-nation of photoexcited carriers,leading to poor photodetection performance.Here,inspired by the photogating effect,we demonstrated a highly sensitive photodetector based on graphene/WSe2 vertical heterostructure where the WSe2 layer acts as both the light absorption layer and the localized grating layer.The graphene conductive channel is induced to produce more carriers by capacitive coupling.Due to the strong light absorption and high external quantum efficiency of multilayer WSe2,as well as the high carrier mobility of graphene,a high photocurrent is generated in the vertical heterostructure.As a result,the photodetector exhibits ultra-high responsivity of 3.85 × 104 A/W and external quantum efficiency of 1.3 x 107％.This finding demonstrates that photogating structures can effectively enhance the sensitivity of graphene-based photodetec-tors and may have great potential applications in future optoelectronic devices.
      原文链接:
    • 万方数据

    Quantitative analysis of the morphing wing mechanism of raptors:IMMU-based motion capture system and its application on gestures of a Falco peregrinus

    唐迪朱力文施文熙刘大伟...
    818-827页
    查看更多>>摘要：This paper presented a novel tinny motion capture system for measuring bird posture based on inertial and mag-netic measurement units that are made up of micromachined gyroscopes,accelerometers,and magnetometers.Multiple quaternion-based extended Kalman filters were implemented to estimate the absolute orientations to achieve high accuracy.Under the guidance of ornithology experts,the extending/contracting motions and flapping cycles were recorded using the developed motion capture system,and the orientation of each bone was also analyzed.The captured flapping gesture of the Falco peregrinus is crucial to the motion database of raptors as well as the bionic design.
      原文链接:
    • 万方数据
    • 维普

    Identifying influential spreaders in social networks:A two-stage quantum-behaved particle swarm optimization with Lévy flight

    卢鹏丽揽继茂唐建新张莉...
    828-840页
    查看更多>>摘要：The influence maximization problem aims to select a small set of influential nodes,termed a seed set,to maximize their influence coverage in social networks.Although the methods that are based on a greedy strategy can obtain good accuracy,they come at the cost of enormous computational time,and are therefore not applicable to practical scenarios in large-scale networks.In addition,the centrality heuristic algorithms that are based on network topology can be completed in relatively less time.However,they tend to fail to achieve satisfactory results because of drawbacks such as overlapped influence spread.In this work,we propose a discrete two-stage metaheuristic optimization combining quantum-behaved particle swarm optimization with Lévy flight to identify a set of the most influential spreaders.According to the framework,first,the particles in the population are tasked to conduct an exploration in the global solution space to eventually converge to an acceptable solution through the crossover and replacement operations.Second,the Lévy flight mechanism is used to perform a wandering walk on the optimal candidate solution in the population to exploit the potentially unidentified influential nodes in the network.Experiments on six real-world social networks show that the proposed algorithm achieves more satisfactory results when compared to other well-known algorithms.
      原文链接:
    • 万方数据

    Pedestrian flow through exit:Study focused on evacuation pattern

    张博思余志红孙柏林郭紫钰...
    841-851页
    查看更多>>摘要：Experiments are conducted on the evacuation rate of pedestrians through exits with queued evacuation pattern and random evacuation pattern.The experimental results show that the flow rate of pedestrians is larger with the random evacuation pattern than with the queued evacuation pattern.Therefore,the exit width calculated based on the minimum evacuation clear width for every 100 persons,which is on the assumption that the pedestrians pass through the exit in one queue or several queues,is conservative.The number of people crossing the exit simultaneously is greater in the random evacuation experiments than in the queued evacuation experiments,and the time interval between the front row and rear row of people is shortened in large-exit conditions when pedestrians evacuate randomly.The difference between the flow rate with a queued evacuation pattern and the flow rate with a random evacuation pattern is related to the surplus width of the exit,which is greater than the total width of all accommodated people streams.Two dimensionless quantities are defined to explore this relationship.It is found that the difference in flow rate between the two evacuation patterns is stable at a low level when the surplus width of the exit is no more than 45％of the width of a single pedestrian stream.There is a great difference between the flow rate with the queued evacuation pattern and the flow rate with the random evacuation pattern in a scenario with a larger surplus width of the exit.Meanwhile,the pedestrians crowd extraordinarily at the exit in these conditions as well,since the number of pedestrians who want to evacuate through exit simultaneously greatly exceeds the accommodated level.Therefore,the surplus width of exit should be limited especially in the narrow exit condition,and the relationship between the two dimensionless quantities mentioned above could provide the basis to some extent.
      原文链接:
    • 万方数据
    • 维普