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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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    Comparative study of boron and neon injections on divertor heat fluxes using SOLPS-ITER simulations

    彭磊孙震孙继忠Rajesh Maingi...
    312-321页
    查看更多>>摘要：Based on the EAST equilibrium,the effects of boron(B)and neon(Ne)injected at different locations on the target heat load,and the distributions of B and Ne particles were investigated by transport code SOLPS-ITER.It was found that the B injection was more sensitive to the injection location for heat flux control than impurity Ne.The high electron and ion densities near the inner target in the discharge with impurity B injected from over X-point(R1)led to plasma detachment only at the inner target,and the localized B ions in the cases with injection from outer target location(R2)and upstream location(R3)led to far-SOL detachment at the outer target,but not at the inner target.In contrast,for Ne,the spatial distributions of Ne ions and electrons were found to be similar in all the cases at the three injection locations,and the detached plasma was achieved at the inner target and the electron temperature was reduced at the outer target.For locations R2 and R3,impurity B showed a more pronounced effect on the heat flux at the far-SOL of the outer target.Further analysis indicated that Ne atoms came mainly from the recycling sources,whereas B atoms came mainly from injection,and that their distinct atomic distributions resulted from the difference in the ionization threshold and ionization mean free path.In addition,the radiation proportion of B in the divertor region was larger than that of Ne when the total radiation power was similar,which suggests that B has less influence on the core region.
      原文链接:
    • 维普
    • 万方数据

    A model for fast electron-driven high-density plasma in the double-cone ignition scheme

    陈忠义赵凯歌李英骏
    322-330页
    查看更多>>摘要：A model for fast electron-driven high-density plasma is proposed to describe the effect of injected fast electrons on the temperature and inner pressure of the plasma in the fast heating process of the double-cone ignition(DCI)scheme.Due to the collision of the two low-density plasmas,the density and volume of the high-density plasma vary.Therefore,the ignition temperature and energy requirement of the high-density plasma vary at different moments,and the required energy for hot electrons to heat the plasma also changes.In practical experiments,the energy input of hot electrons needs to be considered.To reduce the energy input of hot electrons,the optimal moment and the shortest time for injecting hot electrons with minimum energy are analyzed.In this paper,it is proposed to inject hot electrons for a short time to heat the high-density plasma to a relatively high temperature.Then,the alpha particles with the high heating rate and PdV work heat the plasma to the ignition temperature,further reducing the energy required to inject hot electrons.The study of the injection time of fast electrons can reduce the energy requirement of fast electrons for the high-density plasma and increase the probability of successful ignition of the high-density plasma.
      原文链接:
    • 维普
    • 万方数据

    Valence electron structures dependences of structural stability and properties of REX3(RE=rare earth;X=In,Tl)and RE(In,Co)3 alloys

    李博洋郭永权冯奕晨王鑫泽...
    331-339页
    查看更多>>摘要：Intermetallic compounds REIn3(RE=rare earth)have attracted much attention due to their unique characteristics:crystal field effect,Kondo effect,superconductivity,heavy fermion,and antiferromagnetism,and their cobalt diluted alloys exhibit the ferromagnetic half-metallic characteristics at room temperature.In this study,an empirical electron theory(EET)is employed to investigate systemically the valence electronic structure,the thermal and magnetic properties of REX3 and their cobalt diluted alloys for revealing the mechanism of physical properties.The calculated bond length,melting point,and magnetic moment match the experimental ones very well.The study reveals that structural stability and physical properties of REX3 and their cobalt dilute alloys are strongly related to their valence electron structures.It is suggested that the structural stability and cohesive energy depend upon the covalent electron,the melting point is modulated by covalent electron pair,and the magnetic moment is originated from 3d magnetic electron.The ferromagnetic characteristics of Co-diluted REIn3 alloys is originated from the introduction of strong ferromagnetic Co atom,but,a competition is caused between the electron transition from valence electron to magnetic electron on d orbit and its reversal electron transformation with increasing the content of cobalt,which results in the formations of diluted magnetic Gd(In,Co)3 alloy with minor amount of cobalt and strong magnetic Nd(In,Co)3 alloy with doping more Co atoms.
      原文链接:
    • 万方数据

    Effect of Mn element on shock response in CoCrFeNiMnx high entropy alloys

    闻鹏杜长星陶钢丁贵鹏...
    340-348页
    查看更多>>摘要：The effect of Mn element on shock response of CoCrFeNiMnx high entropy alloys(HEAs)are investigated using molecular dynamics simulations.Structural analysis shows that Mn-rich CoCrFeNiMnx HEA has a larger average atomic volume.The elastic properties of CoCrFeNiMnx HEAs under various hydrostatic pressures are studied,revealing that the elastic modulus decreases with increasing of Mn content.The shock thermodynamic parameters are quantitatively ana-lyzed.The Mn-dependent shock Hugoniot relationship of CoCrFeNiMnx HEAs is obtained:Us=1.25+(5.21-0.011 x)Up.At relatively high shock pressure,the increase in Mn content promotes the formation of clustered BCC structures and hin-ders the development of dislocations.In addition,more FCC structures in Mn-rich CoCrFeNiMnx HEAs transform into disordered structures during spallation.Spall strength decreases with increasing Mn content.This study can provide a reference for the design and application of CoCrFeNiMn HEAs under shock loading.
      原文链接:
    • 维普
    • 万方数据

    A molecular dynamics study on mechanical performance and deformation mechanisms in nanotwinned NiCo-based alloys with nano-precipitates under high temperatures

    于子皓王鸿宇孙李刚李志辉...
    349-355页
    查看更多>>摘要：Molecular dynamics simulations are performed to investigate the mechanical behavior of nanotwinned NiCo-based alloys containing coherent L12 nano-precipitates at different temperatures,as well as the interactions between the dis-locations and nano-precipitates within the nanotwins.The simulation results demonstrate that both the yield stress and flow stress in the nanotwinned NiCo-based alloys with nano-precipitates decrease as the temperature rises,because the higher temperatures lead to the generation of more defects during yielding and lower dislocation density during plastic deformation.Moreover,the coherent L12 phase exhibits excellent thermal stability,which enables the hinderance of dislo-cation motion at elevated temperatures via the wrapping and cutting mechanisms of dislocations.The synergistic effect of nanotwins and nano-precipitates results in more significant strengthening behavior in the nanotwinned NiCo-based alloys under high temperatures.In addition,the high-temperature mechanical behavior of nanotwinned NiCo-based alloys with nano-precipitates is sensitive to the size and volume fraction of the microstructures.These findings could be helpful for the design of nanotwins and nano-precipitates to improve the high-temperature mechanical properties of NiCo-based alloys.
      原文链接:
    • 维普
    • 万方数据

    A novel MgHe compound under high pressure

    张车荣常乐斌纪苏宸郭兰慈...
    356-360页
    查看更多>>摘要：Helium,with a full-shell electronic structure,is the most inert element in the periodic table at atmospheric pressure.The study of the reaction between helium and other non-noble-gas elements as well as relevant compounds has attracted great attention in the fields of chemistry,physics,materials and planetary science.In this study,we found a stable com-pound of MgHe with P63/mmc symmetry at pressures above 795 GPa within zero-point energy.Thermodynamic stability calculations of P63/mmc phase at high temperatures and pressures indicate that this structure may exist in the interior of the super-Earth and Neptune.Our further simulations on the electron localization function and Bader analysis show that the predicted compound is an electride with-1.093e in the quantized interstitial quasiatom(ISQ)orbitals,which are local-ized at interstitial sites in the crystal lattice.Our study provides a theoretical basis for studying the physical and chemical properties of MgHe and the existence of MgHe in gaseous planets.
      原文链接:
    • 维普
    • 万方数据

    The hcp-bcc transition of Be via anisotropy of modulus and sound velocity

    杨真咸佳伟高兴誉田付阳...
    361-366页
    查看更多>>摘要：Based on ab initio calculations,we utilize the mean-field potential approach with the quantum modification in con-junction with stress-strain relation to investigate the elastic anisotropies and sound velocities of hcp and bcc Be under high-temperature(0-6000 K)and high-pressure(0-500 GPa)conditions.We propose a general definition of anisotropy for elastic moduli and sound velocities.Results suggest that the elastic anisotropy of Be is more significantly influenced by pressure than by temperature.The pressure-induced increase of c/a ratio makes the anisotropy of hcp Be significantly strengthen.Nevertheless,the hcp Be still exhibits smaller anisotropy than bcc Be in terms of elastic moduli and sound velocities.We suggest that measuring the anisotropy in shear sound velocity may be an approach to distinguishing the hcp-bcc phase transition under extreme conditions.
      原文链接:
    • 维普
    • 万方数据

    "Glass-quake in elastically loaded bulk metallic glasses

    黄琦陈开果刘辰刘桂森...
    367-371页
    查看更多>>摘要：Amorphous solids exhibit scale-free avalanches,even under small external loading,and thus can work as suitable systems to study critical behavior and universality classes.The abundance of scale-free avalanches in the entire elastic tension regime of bulk metallic glass(BMG)samples has been experimentally observed using acoustic emission(AE)measurements.In this work,we compare the statistics of avalanches with those of earthquakes,and find that they both follow the Gutenberg-Richter law in the statistics of energies and Omori's law of aftershock rates,and share the same characteristics in the distribution of recurrence times.These resemblances encourage us to propose the term"glass-quake"to describe avalanches in elastically loaded BMGs.Furthermore,our work echoes the potential universality of critical behavior in disordered physical systems from atomic to planetary scales,and motivates the use of elastic loaded BMGs as valuable laboratory simulators of seismic dynamics.
      原文链接:
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    Valley switch effect in an α-T3 lattice-based superconducting interferometer

    魏亚军汪军
    372-377页
    查看更多>>摘要：Dirac electrons possess a valley degree of freedom,which is currently under investigation as a potential information carrier.We propose an approach to generate and manipulate the valley-switching current(VSC)through Andreev reflection using an interferometer-based superconductor hybrid junction.The interferometer comprises a ring-shaped structure formed by topological kink states in the α-T3 lattice via carefully designed electrostatic potentials.Our results demonstrate the feasibility of achieving a fully polarized VSC in this device without contamination from cotunneling electrons sharing the same valley as the incident electron.Furthermore,we show that control over the fully polarized VSC can be achieved by applying a nonlocal gate voltage or modifying the global parameter α.The former alters the dynamic phase of electrons while the latter provides an α-dependent Berry phase,both directly influencing quantum interference and thereby affecting performance in terms of generating and manipulating VSC,crucial for advancements in valleytronics.
      原文链接:
    • 万方数据

    Nonvolatile ferroelectric control of electronic properties of Bi2Te3

    丁旭升李云飞康朝阳宋业恒...
    378-383页
    查看更多>>摘要：Nonvolatile electric-field control of the unique physical characteristics of topological insulators(TIs)is essential for the fundamental research and development of practical electronic devices.Electrically tunable transport properties through gating materials have been extensively investigated.However,the relatively weak and volatile tunability limits its practical applications in spintronics.Here,we demonstrate the nonvolatile electric-field control of Bi2Te3 transport properties via constructing ferroelectric Rashba architectures,i.e.,2D Bi2Te3/α-In2Se3 ferroelectric field-effect transistors.By switching the polarization states of α-In2Se3,the Fermi level,resistance,Fermi wave vector,carrier mobility,carrier density and magnetoresistance(MR)of the Bi2Te3 film can be effectively modulated.Importantly,a shift of the Fermi level towards a band gap with a surface state occurs as switching to a negative polarization state,the contribution of the surface state to the conductivity then increases,thereby increasing the carrier mobility and electron coherence length significantly,resulting in the enhanced weak anti-localization(WAL)effect.These results provide a nonvolatile electric-field control method to tune the electronic properties of TI and can further extend to quantum transport properties.
      原文链接:
    • 维普
    • 万方数据