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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。
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    Pseudospin-filter tunneling of massless Dirac fermions

    李政栋曾文
    384-387页
    查看更多>>摘要：The tunneling of the massless Dirac fermions through a vector potential barrier are theoretically investigated,where the vector potential can be introduced by very high and very thin(δ-function)magnetic potential barriers.We show that,distinct from the previously studied electric barrier tunneling,the vector potential barriers are more transparent for pseudospin-1/2 Dirac fermions but more obstructive for pseudospin-1 Dirac fermions.By tuning the height of the vector potential barrier,the pseudospin-1/2 Dirac fermions remain transmitted,whereas the transmission of the pseudospin-1 Dirac fermions is forbidden,leading to a pseudospin filtering effect for massless Dirac fermions.
      原文链接:
    • 万方数据
    • 维普

    Dynamic properties of the magnetic skyrmion driven by electromagnetic waves with spin angular momentum and orbital angular momentum

    郭龙飞查兵孙晓乔倪松梅...
    388-395页
    查看更多>>摘要：We theoretically studied the dynamic properties of the skyrmion driven by electromagnetic(EM)waves with spin angular momentum(SAM)and orbital angular momentum(OAM)using micromagnetic simulations.First,the guiding centers of the skyrmion driven by EM waves with SAM,i.e.,left-handed and right-handed circularly polarized EM waves,present circular trajectories,while present elliptical trajectories under linear EM waves driving due to the superposition of oppositely polarized wave components.Second,the trajectories of the skyrmion driven by EM waves with OAM demon-strate similar behavior to that driven by linearly polarized EM waves.Because the wave vector intensity varies with the phase for both linearly polarized EM waves and EM waves with OAM,the angular momentum is transferred to the skyrmion non-uniformly,while the angular momentum is transferred to the skyrmion uniformly for left-handed and right-handed cir-cularly polarized EM driving.Third,the dynamic properties of the skyrmion driven by EM waves with both SAM and OAM are investigated.It is found that the dynamic trajectories exhibit more complex behavior due to the contributions or competition of SAM and OAM.We investigate the characteristics of intrinsic gyration modes and frequency-dependent trajectories.Our research may provide insight into the dynamic properties of skyrmion manipulated by EM waves with SAM or OAM and provide a method for controlling skyrmion in spintronic devices.
      原文链接:
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    • 维普

    Magnetocaloric properties of Nd-doped Gd5Si4 microparticles and nanopowders

    张凯扬王欢欢王颖王涛...
    396-402页
    查看更多>>摘要：The preparation of materials with enhanced magnetocaloric properties is crucial for magnetic refrigeration.In this study,Nd-doped Gd5Si4 microparticles and nanomaterials were synthesized using the reduction-diffusion method.The impact of Nd doping with varying compositions on the structure and entropy change properties of the materials was investi-gated.The Curie temperatures of both the micron-and nano-sized materials ranged from 190 K to 210 K,which were lower than previously reported values.Micron-sized samples doped with 1％Nd exhibited superior magnetocaloric properties,demonstrating a maximum entropy change of 4.98 J·kg-1·K-1 at 5 T,with an entropy change exceeding 4 J·kg-1·K-1 over a wide temperature range of approximately 70 K.Conversely,the nanomaterials had broader entropy change peaks but lower values.All samples exhibited a second-order phase transition,as confirmed by the Arrott plots.
      原文链接:
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    • 维普

    Phase structure evolution and coercivity mechanism of high-Co containing permanent magnets

    黄敏丁勇赵之赫王春国...
    403-410页
    查看更多>>摘要：The phase structure and magnetic properties of high-Co containing permanent magnets with high thermal stability have been systematically studied in this work.It is abnormal that the coercivity of annealed samples was slightly lower than that of sintered samples,while the coercivity was usually enhanced after annealing in conventional Nd-Fe-B samples.Further analysis showed that in addition to RE2(Fe,Co)14B main phase and RE-rich grain boundary phase,there were also new Co-rich magnetic phases located in the grain boundary.During annealing,the phase structures of high-Co containing magnets were readjusted,especially the increasing Co-rich magnetic phase and emerging RE-rich particles precipitated from the main phase.Eventually,the isolated RE-rich particles would act as the pinning center of the domain wall movement in demagnetization process.It was confirmed that the coercivity of annealed high-Co containing magnets was controlled by both nucleation and pinning.Pinning mechanism can partially compensate for the weakening of magnetic isolation due to increased Co-rich magnetic phase,which explained the moderate decrease in coercivity of annealed high-Co containing magnets.The discovery of new coercivity mechanism contributed to in-depth understanding of high-Co containing magnets.
      原文链接:
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    • 维普

    Crystal growth,structure and crystal field splitting and fitting of Yb∶GdScO3

    李加红张庆礼孙贵花高进云...
    411-416页
    查看更多>>摘要：A good quality(5 at.％Yb∶GdScO3)single crystal of Φ30 mm × 37 mm was grown successfully by the Czochral-ski method.Its structure is studied by the x-ray diffraction(XRD),and its atomic coordinates are obtained by Rietveld refinement.The crystal field energy level splitting of Yb3+in GdScO3 is determined by employing the absorption and photoluminescence spectra at 8 K.Only 2F7/2(4)is far from the ground state 2F7/2(1)by 710 cm-1 among the crystal field energy levels split from 2F7/2,so it is more easier to realize the laser operation of 2F5/2(1)→2F7/2(4)with wavelength 1060 nm.The spin-orbit coupling parameters and intrinsic crystal field parameters(CFPs).The intrinsic crystal field pa-rameters Bk(k=2,4,6)of the crystal were fitted by the superposition model.The CFPs evaluated with Bk and coordination factor are taken as the initial parameters to fit the crystal field energy levels of the crystal,and the crystal field parameters Bqk are obtained finally with the root-mean-square deviation 9 cm-1.It is suggested that the ligand point charge,covalency and overlap interaction are slightly weaker than charge interpenetration and coulomb exchange interaction for Yb3+in GdScO3.The obtained Hamiltonian parameters can be used to calculate crystal field energy levels and wave functions of Yb∶GdScO3 to analyze the mechanism of the luminescence or laser.
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    Relation of Ⅴ/Ⅲ ratio of AlN interlayer with the polarity of nitride

    苏兆乐李阳锋胡小涛宋祎萌...
    417-421页
    查看更多>>摘要：N-polar GaN film was obtained by using a high-temperature AlN buffer layer.It was found that the polarity could be inverted by a thin low-temperature AlN interlayer with the same Ⅴ/Ⅲ ratio as that of the high-temperature AlN layer.Continuing to increase the Ⅴ/Ⅲ ratio of the low-temperature AlN interlayer,the Ga-polarity of GaN film was inverted to N-polarity again but the crystal quality and surface roughness of GaN film greatly deteriorated.Finally,we analyzed the chemical environment of the AlN layer by x-ray photoelectron spectroscopy(XPS),which provides a new direction for the control of GaN polarity.
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    Identifying the effect of photo-generated carriers on the phonons in rutile TiO2 through Raman spectroscopy

    王征廖敏王桂花张梦...
    422-428页
    查看更多>>摘要：Investigating lattice vibrations through Raman spectroscopy is a crucial method for studying crystalline materials.Carriers can interact with lattices and influence lattice vibrations;thus,it is feasible to study the effect of photo-generated carriers on phonons by analyzing changes in the Raman spectra of semiconductors.Rutile is one of the predominant crystalline phases of TiO2,which is a widely utilized metal oxide semiconductor.In this work,rutile TiO2 is coated on a thinned optical fiber to concentrate ultraviolet light energy within the material,thereby enhancing the generation of carriers and amplifying the changes in the Raman spectra.A Raman detection laser with a wavelength of 532 nm is utilized to collect the Raman spectra of rutile TiO2 during irradiation.Using this setup,the impact of photo-generated carriers on the phonons corresponding to Raman vibrational modes is researched.The localization and non-radiative recombination of photo-generated carriers contribute to a reduction in both the frequencies and lifetimes of phonons.This work provides a novel approach to researching the effect of carriers on phonons.
      原文链接:
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    Dancing bubble sonoluminescence in phosphoric acid solution

    王德鑫清河美包乌日汗韩海英...
    429-435页
    查看更多>>摘要：Sonoluminescence is more distinctly observed in phosphoric and sulfuric acid,which exhibit high viscosity and lower vapor pressures relative to water.Within an 85-wt％phosphoric acid solution saturated with argon(Ar),variations in the light-emitting regimes of bubbles were noted to correspond with increments in the driving acoustic intensity.Specifically,the bubbles were observed to perform a dance-like motion 2 cm below the multi-bubble sonoluminescence(MBSL)cluster,traversing a 25-mm2 grid during the camera exposure period.Spectral analysis conducted at the beginning of the experiment showed a gradual attenuation of CN(B2∑-X2∑)emission concurrent with a strengthening of Ar(4p-4s)atom emission lines.The application of a theoretical temperature model to the spectral data revealed that the internal temperature of the bubbles escalates swiftly upon their implosion.This study is instrumental in advancing the comprehension of the underlying mechanisms of sonoluminescence and in the formulation of a dynamic model for the behavior of the bubbles.
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    • 维普

    Structural behavior and metallization of AsSbS3 at high pressure

    覃天武敏王凯吴也...
    436-440页
    查看更多>>摘要：The group Ⅴ-Ⅵ semiconductor material getchellite(crystalline AsSbS3)has garnered extensive attention due to its wonderful electronic and optical properties.The pressure engineering is one of the most effective methods to modulate crystal structure and physical properties of semiconductor materials.In this study,the structural behavior,optical and elec-trical properties of AsSbS3 under high pressure have been investigated systematically by in situ high-pressure experiments for the first time.The monoclinic structure of AsSbS3 remains stable up to 47.0 GPa without phase transition.The gradual lattice contraction with increasing pressure results in a continuous narrowing of the bandgap then leads to pressure-induced metallization of AsSbS3 at 31.5 GPa.Our research presents a high-pressure strategy for tuning the crystal structure and physical properties of AsSbS3 to expand its potential applications in electronic and optoelectronic fields.
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    Unravelling biotoxicity of graphdiyne:Molecular dynamics simulation of the interaction between villin headpiece protein and graphdiyne

    张贝薇张兵权邵志刚吴先球...
    441-447页
    查看更多>>摘要：Recently,there has been a growing prevalence in the utilization of graphdiyne(GDY)in the field of biomedicine,attributed to its distinctive physical structure and chemical properties.Additionally,its biocompatibility has garnered increasing attention.However,there is a lack of research on the biological effects and physical mechanisms of GDY-protein interactions at the molecular scale.In this study,the villin headpiece subdomain(HP35)served as a representative protein model.Molecular dynamics simulations were employed to investigate the interaction process between the HP35 protein and GDY,as well as the structural evolution of the protein.The data presented in our study demonstrate that GDY can rapidly adsorb HP35 protein and induce denaturation to one of the α-helix structures of HP35 protein.This implies a potential cytotoxicity concern of GDY for biological systems.Compared to graphene,GDY induced less disruption to HP35 protein.This can be attributed to the presence of natural triangular vacancies in GDY,which prevents π-π stacking action and the limited interaction of GDY with HP35 protein is not conducive to the expansion of protein structures.These findings unveil the biological effects of GDY at the molecular level and provide valuable insights for the application of GDY in biomedicine.
      原文链接:
    • 万方数据
    • 维普