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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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    Structure and superconducting properties of Ru1-xMox(x=0.1-0.9)alloys

    付阳龚春生涂志俊田尚杰...
    172-179页
    查看更多>>摘要：We report the detailed crystal structures and physical properties of Ru1-xMox alloys in the solid solution range of x=0.1-0.9.Structure characterizations indicate that the crystal structure changes from the hcp-Mg-type,to β-CrFe-type,and then bcc-W-type.The measurements of physical properties show that the Ru1-xMox samples with x ≥ 0.2 are superconductors and the superconducting transition temperature Tc as a function of Mo content exhibits a dome-like behavior.
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    Co-doped BaFe2As2 Josephson junction fabricated with a focused helium ion beam

    陈紫雯张焱马平徐中堂...
    180-186页
    查看更多>>摘要：Josephson junction plays a key role not only in studying the basic physics of unconventional iron-based supercon-ductors but also in realizing practical application of thin-film based devices,therefore the preparation of high-quality iron pnictide Josephson junctions is of great importance.In this work,we have successfully fabricated Josephson junctions from Co-doped BaFe2As2 thin films using a direct junction fabrication technique which utilizes high energy focused helium ion beam(FHIB).The electrical transport properties were investigated for junctions fabricated with various He+irradiation doses.The junctions show sharp superconducting transition around 24 K with a narrow transition width of 2.5 K,and a dose correlated foot-structure resistance which corresponds to the effective tuning of junction properties by He+irradia-tion.Significant Jc suppression by more than two orders of magnitude can be achieved by increasing the He+irradiation dose,which is advantageous for the realization of low noise ion pnictide thin film devices.Clear Shapiro steps are ob-served under 10 GHz microwave irradiation.The above results demonstrate the successful fabrication of high quality and controllable Co-doped BaFe2 As2 Josephson junction with high reproducibility using the FHIB technique,laying the foun-dation for future investigating the mechanism of iron-based superconductors,and also the further implementation in various superconducting electronic devices.
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    Robust Tc in element molybdenum up to 160 GPa

    吴新月郭淑敏郭鉴宁陈诉...
    187-193页
    查看更多>>摘要：Element superconductors with the single atoms provide clean and fundamental platforms for studying superconduc-tivity.Although elements with d electrons are usually not favored by conventional BCS,the record superconducting critical temperature(Tc)in element scandium(Sc)has further ignited the intensive attention on transition metals.The element molybdenum(Mo)with a half-full d-orbital is studied in our work,which fills the gap in the study of Mo under high pres-sure and investigates the pressure dependence of superconductivity.In this work,we exhibit a robust superconductivity of Mo in the pressure range of 5 GPa to 160 GPa via high-pressure electrical transport measurements,the Tc varies at a rate of 0.013 K/GPa to 8.56 K at 160 GPa.Moreover,the superconductivity is evidenced by the Tc shifting to lower temperature under applied magnetic fields,and the upper critical magnetic fields are extrapolated by the WHH equation and GL equa-tion;the results indicate that the maximum upper critical magnetic field is estimated to be 8.24 T at 137 GPa.We further investigate the superconducting mechanism of Mo,the theoretical calculations indicate that the superconductivity can be attributed to the strong coupling between the electrons from the partially filled d band and the phonons from the frequency zone of 200-400 cm-1.
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    Localization effect in single crystal of RuAs2

    易哲铠刘琪光双魁徐升...
    194-200页
    查看更多>>摘要：We report the magnetotransport and thermal properties of RuAs2 single crystal.RuAs2 exhibits semiconductor be-havior and localization effect.The crossover from normal state to diffusive transport in the weak localization(WL)state and then to variable range hopping(VRH)transport in the strong localization state has been observed.The transitions can be reflected in the measurement of resistivity and Seebeck coefficient.Negative magnetoresistance(NMR)emerges with the appearance of localization effect and is gradually suppressed in high magnetic field.The temperature dependent phase coherence length extracted from the fittings of NMR also indicates the transition from WL to VRH.The measurement of Hall effect reveals an anomaly of temperature dependent carrier concentration caused by localization effect.Our findings show that RuAs2 is a suitable platform to study the localized state.
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    BaTiO3/p-GaN/Au self-driven UV photodetector with bipolar photocurrent controlled by ferroelectric polarization

    韩无双刘可为杨佳霖朱勇学...
    201-207页
    查看更多>>摘要：Ferroelectric materials are promising candidates for ultraviolet photodetectors due to their ferroelectric effect.In this work,a BaTiO3/p-GaN/Au hybrid heterojunction-Schottky self-driven ultraviolet photodetector was fabricated with excellent bipolar photoresponse property.At 0 V bias,the direction of the photocurrent can be switched by flipping the depolarization field of BaTiO3,which allows the performance of photodetectors to be controlled by the ferroelectric effect.Meanwhile,a relatively large responsivity and a fast response speed can be also observed.In particular,when the depolarization field of BaTiO3 is in the same direction of the built-in electric field of the Au/p-GaN Schottky junction(up polarized state),the photodetector exhibits a high responsivity of 18 mA/W at 360 nm,and a fast response speed of＜40 ms at 0 V.These findings pave a new way for the preparation of high-performance photodetectors with bipolar photocurrents.
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    Stable photocurrent-voltage characteristics of perovskite single crystal detectors obtained by pulsed bias

    刘新陈之龙王虎张雯清...
    208-214页
    查看更多>>摘要：Photocurrent-voltage characterization is a crucial method for assessing key parameters in x-ray or y-ray semiconduc-tor detectors,especially the carrier mobility lifetime product.However,the high biases during photocurrent measurements tend to cause severe ion migration,which can lead to the instability and inaccuracy of the test results.Given the mixed electronic-ionic characteristics,it is imperative to devise novel methods capable of precisely measuring photocurrent-voltage characteristics under high bias conditions,free from interference caused by ion migration.In this paper,pulsed bias is employed to explore the photocurrent-voltage characteristics of MAPbBr3 single crystals.The method yields stable photocurrent-voltage characteristics at a pulsed bias of up to 30 V,proving to be effective in mitigating ion migration.Through fitting the modified Hecht equation,we determined the mobility lifetime products of 1.0×10-2 cm2·V-1 for hole and 2.78 × 10-3 cm2·V-1 for electron.This approach offers a promising solution for accurately measuring the transport properties of carriers in perovskite.
      原文链接:
    • 万方数据
    • 维普

    Quantum control based on three forms of Lyapunov functions

    俞国慧杨洪礼
    215-222页
    查看更多>>摘要：This paper introduces the quantum control of Lyapunov functions based on the state distance,the mean of imaginary quantities and state errors.In this paper,the specific control laws under the three forms are given.Stability is analyzed by the LaSalle invariance principle and the numerical simulation is carried out in a 2D test system.The calculation process for the Lyapunov function is based on a combination of the average of virtual mechanical quantities,the particle swarm algorithm and a simulated annealing algorithm.Finally,a unified form of the control laws under the three forms is given.
      原文链接:
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    • 维普

    Higher-dimensional Chen-Lee-Liu equation and asymmetric peakon soliton

    韩巧红贾曼
    223-229页
    查看更多>>摘要：Integrable systems play a crucial role in physics and mathematics.In particular,the traditional(1+1)-dimensional and(2+1)-dimensional integrable systems have received significant attention due to the rarity of integrable systems in higher dimensions.Recent studies have shown that abundant higher-dimensional integrable systems can be constructed from(1+1)-dimensional integrable systems by using a deformation algorithm.Here we establish a new(2+1)-dimensional Chen-Lee-Liu(C-L-L)equation using the deformation algorithm from the(1+1)-dimensional C-L-L equation.The new system is integrable with its Lax pair obtained by applying the deformation algorithm to that of the(1+1)-dimension.It is challenging to obtain the exact solutions for the new integrable system because the new system combines both the original C-L-L equation and its reciprocal transformation.The traveling wave solutions are derived in implicit function expression,and some asymmetry peakon solutions are found.
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    • 维普

    Thermal-contact capacity of one-dimensional attractive Gaudin-Yang model

    张小敏程颂陈洋洋
    230-235页
    查看更多>>摘要：Tan's contact C is an important quantity measuring the two-body correlations at short distances in a dilute system.Here we make use of the technique of exactly solved models to study the thermal-contact capacity KT,i.e.,the derivative of C with respect to temperature in the attractive Gaudin-Yang model.It is found that KT is useful in identifying the low temperature phase diagram,and using the obtained analytical expression of KT,we study its critical behavior and the scaling law.Especially,we show KT versus temperature and thus the non-monotonic tendency of C in a tiny interval,for both spin-balanced and imbalanced phases.Such a phenomenon is merely observed in multi-component systems such as SU(2)Fermi gases and spinor bosons,indicating the crossover from the Tomonaga-Luttinger liquid to the spin-coherent liquid.
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    • 维普

    Observer-based dynamic event-triggered control for distributed parameter systems over mobile sensor-plus-actuator networks

    穆文英庄波邱芳
    236-243页
    查看更多>>摘要：We develop a policy of observer-based dynamic event-triggered state feedback control for distributed parameter sys-tems over a mobile sensor-plus-actuator network.It is assumed that the mobile sensing devices that provide spatially averaged state measurements can be used to improve state estimation in the network.For the purpose of decreasing the update frequency of controller and unnecessary sampled data transmission,an efficient dynamic event-triggered control policy is constructed.In an event-triggered system,when an error signal exceeds a specified time-varying threshold,it indicates the occurrence of a typical event.The global asymptotic stability of the event-triggered closed-loop system and the boundedness of the minimum inter-event time can be guaranteed.Based on the linear quadratic optimal regulator,the actuator selects the optimal displacement only when an event occurs.A simulation example is finally used to verify that the effectiveness of such a control strategy can enhance the system performance.
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    • 维普