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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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    Valley filtering and valley-polarized collective modes in bulk graphene monolayers

    郑建龙翟峰
    1-16页
    查看更多>>摘要：The presence of two sublattices in hexagonal graphene brings two energetically degenerate extremes in the conduc-tion and valence bands,which are identified by the valley quantum number.Recently,this valley degree of freedom has been suggested to encode and process information,which develops a new carbon-based electronics named graphene val-leytronics.In this topical review,we present and discuss valley-related transport properties in bulk graphene monolayers,which are due to strain-induced pseudomagnetic fields and associated vector potential,sublattice-stagger potential,and the valley-Zeeman effect.These valley-related interactions can be utilized to obtain valley filtering,valley spatial separa-tion,valley-resolved guiding modes,and valley-polarized collective modes such as edge or surface plasmons.The present challenges and the perspectives on graphene valleytronics are also provided in this review.
      原文链接:
    • 万方数据
    • 维普

    Recent progress on valley polarization and valley-polarized topological states in two-dimensional materials

    王斐张亚玲杨文佳张会生...
    17-33页
    查看更多>>摘要：Valleytronics,using valley degree of freedom to encode,process,and store information,may find practical ap-plications in low-power-consumption devices.Recent theoretical and experimental studies have demonstrated that two-dimensional(2D)honeycomb lattice systems with inversion symmetry breaking,such as transition-metal dichalcogenides(TMDs),are ideal candidates for realizing valley polarization.In addition to the optical field,lifting the valley degeneracy of TMDs by introducing magnetism is an efficient way to manipulate the valley degree of freedom.In this paper,we first review the recent progress on valley polarization in various TMD-based systems,including magnetically doped TMDs,intrinsic TMDs with both inversion and time-reversal symmetry broken,and magnetic TMD heterostructures.When topo-logically nontrivial bands are empowered into valley-polarized systems,valley-polarized topological states,namely valley-polarized quantum anomalous Hall effect can be realized.Therefore,we have also reviewed the theoretical proposals for realizing valley-polarized topological states in 2D honeycomb lattices.Our paper can help readers quickly grasp the latest research developments in this field.
      原文链接:
    • 万方数据
    • 维普

    Progress on two-dimensional ferrovalley materials

    李平刘邦陈帅张蔚曦...
    34-46页
    查看更多>>摘要：The electron's charge and spin degrees of freedom are at the core of modern electronic devices.With the in-depth investigation of two-dimensional materials,another degree of freedom,valley,has also attracted tremendous research in-terest.The intrinsic spontaneous valley polarization in two-dimensional magnetic systems,ferrovalley material,provides convenience for detecting and modulating the valley.In this review,we first introduce the development of valleytronics.Then,the valley polarization forms by the p-,d-,and f-orbit that are discussed.Following,we discuss the investigation progress of modulating the valley polarization of two-dimensional ferrovalley materials by multiple physical fields,such as electric,stacking mode,strain,and interface.Finally,we look forward to the future developments of valleytronics.
      原文链接:
    • 万方数据
    • 维普

    Valley transport in Kekulé structures of graphene

    王娟娟汪军
    47-57页
    查看更多>>摘要：Valleytronics is an emergent discipline in condensed matter physics and offers a new way to encode and manipulate information based on the valley degree of freedom in materials.Among the various materials being studied,Kekulé dis-torted graphene has emerged as a promising material for valleytronics applications.Graphene can be artificially distorted to form the Kekulé structures rendering the valley-related interaction.In this work,we review the recent progress of research on Kekulé structures of graphene and focus on the modified electronic bands due to different Kekulé distortions as well as their effects on the transport properties of electrons.We systematically discuss how the valley-related interaction in the Kekulé structures was used to control and affect the valley transport including the valley generation,manipulation,and detection.This article summarizes the current challenges and prospects for further research on Kekulé distorted graphene and its potential applications in valleytronics.
      原文链接:
    • 万方数据
    • 维普

    Optical spectrum of ferrovalley materials:A case study of Janus H-VSSe

    罗朝波刘文超彭向阳
    58-64页
    查看更多>>摘要：As opposed to the prototypical MoS2 with centroasymmetry,Janus ferrovalley materials such as H-VSSe are less symmetric with the mirror symmetry and time reversal symmetry broken,and hence possess spontaneous valley polarization and strong ferroelasticity.The optical transition is an important means to excite the valley carriers.We investigate the optical spectrum of H-VSSe by using the many-body perturbation-based GW approach and solving the Bethe-Salpeter equation(BSE)to include the electron-hole interactions.It is found that after the GW correction,the band gaps of the quasiparticle bands are much larger than those obtained by the normal density functional theory.The system is ferromagnetic and the valley gaps become non-degenerate due to spin-orbit coupling(SOC).The position of the lowest BSE peak is much lower than the quasiparticle band gap,indicating that the excitonic effect is large.The peak is split into two peaks by the SOC.The binding energy difference between these two BSE peaks is about the same as the difference between the inequivalent valley gaps.Our results show that in Janus H-VSSe the two lowest exciton peaks are from the two inequivalent valleys with different gaps,in contrast to the A and B exciton peaks of MoS2 which are from the same valley.
      原文链接:
    • 万方数据
    • 维普

    Valley-dependent transport in a mescoscopic twisted bilayer graphene device

    史文萱刘翰林汪军
    65-70页
    查看更多>>摘要：We study the valley-dependent electron transport in a four-terminal mesoscopic device of the two monolayer graphene nanoribbons vertically stacked together,where the intersection forms a bilayer graphene lattice with a controllable twist angle.Using a tight-binding lattice model,we show that the longitudinal and transverse conductances exhibit significant valley polarization in the low energy regime for small twist angles.As the twist angle increases,the valley polarization shifts to the high energy regime.This arises from the regrouping effect of the electron band in the twisted bilayer graphene region.But for relatively large twist angles,no significant valley polarization is observed.These results are consistent with the spectral densities of the twisted bilayer graphene.
      原文链接:
    • 万方数据
    • 维普

    Valleytronic topological filters in silicene-like inner-edge systems

    谢航吕小龙杨加恩
    71-80页
    查看更多>>摘要：Inner edge state with spin and valley degrees of freedom is a promising candidate for designing a dissipationless device due to the topological protection.The central challenge for the application of the inner edge state is to generate and modulate the polarized currents.In this work,we discover a new mechanism to generate fully valley-and spin-valley-polarized current caused by the Bloch wavevector mismatch(BWM).Based on this mechanism,we design some serial-typed inner-edge filters.By using once of the BWM,the coincident states could be divided into transmitted and reflected modes,which can serve as a valley or spin-valley filter.In particular,while with twice of the BWM,the incident current is absolutely reflected to support an off state with a specified valley and spin,which is different from the gap effect.These findings give rise to a new platform for designing valleytronics and spin-valleytronics.
      原文链接:
    • 万方数据
    • 维普

    Progress and realization platforms of dynamic topological photonics

    闫秋辰马睿胡小永龚旗煌...
    81-94页
    查看更多>>摘要：Dynamic topological photonics is a novel research field,combining the time-domain optics and topological physics.In this review,the recent progress and realization platforms of dynamic topological photonics have been well introduced.The definition,measurement methods and the evolution process of the dynamic topological photonics are demonstrated to better understand the physical diagram.This review is meant to bring the readers a different perspective on topological photonics,grasp the advanced progress of dynamic topology,and inspire ideas about future prospects.
      原文链接:
    • 万方数据
    • 维普

    Capturing the non-equilibrium state in light-matter-free-electron interactions through ultrafast transmission electron microscopy

    汪文韬孙帅帅李俊郑丁国...
    95-109页
    查看更多>>摘要：Ultrafast transmission electron microscope(UTEM)with the multimodality of time-resolved diffraction,imaging,and spectroscopy provides a unique platform to reveal the fundamental features associated with the interaction between free electrons and matter.In this review,we summarize the principles,instrumentation,and recent developments of the UTEM and its applications in capturing dynamic processes and non-equilibrium transient states.The combination of the transmission electron microscope with a femtosecond laser via the pump-probe method guarantees the high spatiotemporal resolution,allowing the investigation of the transient process in real,reciprocal and energy spaces.Ultrafast structural dynamics can be studied by diffraction and imaging methods,revealing the coherent acoustic phonon generation and photo-induced phase transition process.In the energy dimension,time-resolved electron energy-loss spectroscopy enables the examination of the intrinsic electronic dynamics of materials,while the photon-induced near-field electron microscopy extends the application of the UTEM to the imaging of optical near fields with high real-space resolution.It is noted that light-free-electron interactions have the ability to shape electron wave packets in both longitudinal and transverse directions,showing the potential application in the generation of attosecond electron pulses and vortex electron beams.
      原文链接:
    • 万方数据

    Attosecond ionization time delays in strong-field physics

    马永哲倪宏程吴健
    110-130页
    查看更多>>摘要：Electronic processes within atoms and molecules reside on the timescale of attoseconds.Recent advances in the laser-based pump-probe interrogation techniques have made possible the temporal resolution of ultrafast electronic processes on the attosecond timescale,including photoionization and tunneling ionization.These interrogation techniques include the attosecond streak camera,the reconstruction of attosecond beating by interference of two-photon transitions,and the attoclock.While the former two are usually employed to study photoionization processes,the latter is typically used to in-vestigate tunneling ionization.In this review,we briefly overview these timing techniques towards an attosecond temporal resolution of ionization processes in atoms and molecules under intense laser fields.In particular,we review the backpropa-gation method,which is a novel hybrid quantum-classical approach towards the full characterization of tunneling ionization dynamics.Continued advances in the interrogation techniques promise to pave the pathway towards the exploration of ever faster dynamical processes on an ever shorter timescale.
      原文链接:
    • 万方数据
    • 维普