Most Down Articles

Published in last 1 year | In last 2 years| In last 3 years| All| Most Downloaded in Recent Month| Most Downloaded in Recent Year|

Most Downloaded in Recent Month

Please wait a minute...


For Selected: Download Citations EndNote Ris BibTeX Toggle Thumbnails

Select

Development Status of Topological Superfluid in Ultracold Atoms FENG Jian, ZHANG Wei-wei, LIN Liang-wei, CAI Qi-peng, ZHANG Yi-cai, LIU Chao-fei Progress in Physics    2022, 42 (3): 67-95.   DOI: 10.13725/j.cnki.pip.2022.03.001 Abstract （1018）      PDF （1246KB）（5581）       The topological superfluid state is protected by the energy gap in the bulk, but it can accommodate the gapless Majorana fermions at the edge of the system. The Majorana fermions satisfy non-Abelian statistics and are protected by topology and have good stability, they can carry quantized information and can be used in the study of topological quantum computing. In recent years, theoretical work has predicted the possible topological superfluid states in various systems. Firstly, we introduce the topological superfluid in various optical lattice models. The ultracold atoms of optical lattice have good controllability and universality. It is an ideal model system to realize topological superfluid. Next, we introduce the topological superfluid under the control of spin orbit coupling. The spin orbit coupling effect is an important condition to induce the topological phase, and the artificial spin orbit coupling has been realized in the experiment. Which makes a breakthrough for the experimental observation of topological superfluid. With the improvement of experimental technology in recent years, the topological FFLO superfluid phase, which was difficult to observe in the experiment and ignored by people, has also become a research hotspot. Therefore, we next introduce the topological FFLO superfluid. In addition, we also introduce the progress in other aspects of topological superfluid, including topological superfluid induced by soliton, three-component topological superfluid, topological superfluid with large Chern number, and the high critical temperature of topological superfluid. In the experiment, how to detect and implement topological superfluid is the purpose and significance of our research. Therefore, we introduce the identification and implementation of topological superfluid at the end of the article. Related Articles | Metrics

Select

Development of Functional Materials for Photocatalytic Reduction of CO 2 TANG Lan-qin, JIA Yin, ZHU Zhi-shang, WU Cong-ping, ZHOU Yong, ZOU Zhi-gang Progress in Physics    2021, 41 (6): 254-263.   DOI: 10.13725/j.cnki.pip.2021.06.002 Abstract （3734）      PDF （3681KB）（8450）       With the increase of CO2 greenhouse gas emissions, seeking new energy sources to build a low carbon society has become more urgent since the 21st century. The conversion of CO2 to valuable hydrocarbon fuel driven by solar energy is of great potential and promising to realize the global carbon balance. Exploring semiconductor materials is very important for the photoreduction of CO2. Therefore, it will be the main research direction to fabricate highly efficient photocatalysis materials. This paper reviews recent research on photocatalytic reduction of CO2 to the hydrocarbon fuels in our groups, mainly focusing on nanostructure and component regulations of semiconductor catalysts, including TiO2, V, W, Ge Ga based materials, C3N4 based and some other materials, for the photocatalytic reduction of CO2. Related Articles | Metrics

Select

A survey of heavy-antiheavy hadronic molecules Dong Xiang-Kun, Guo Feng-Kun, Zou Bing-Song Progress in Physics    2021, 41 (2): 65-93.   DOI: 10.13725/j.cnki.pip.2021.02.001 Abstract （1106）      PDF （1088KB）（8428）       Many efforts have been made to reveal the nature of the overabundant resonant structures observed by the worldwide experiments in the last two decades. Hadronic molecules attract special attention because many of these seemingly unconventional resonances are located close to the threshold of a pair of hadrons. To give an overall feature of the spectrum of hadronic molecules composed of a pair of heavy-antiheavy hadrons, namely, which pairs are possible to form molecular states, we take charmed hadrons for example to investigate the interaction between them and search for poles by solving the Bethe-Salpeter equation. We consider all possible combinations of hadron pairs of the S-wave singly-charmed mesons and baryons as well as the narrow P-wave charmed mesons. The interactions, which are assumed to be meson-exchange saturated, are described by constant contact terms which are resummed to generate poles. It turns out that if a system is attractive near threshold by the light meson exchange, there is a pole close to threshold corresponding to a bound state or a virtual state, depending on the strength of interaction and the cutoff. In total, 229 molecular states are predicted. The observed near-threshold structures with hidden-charm, like the famous X(3872) and Pc states, fit into the spectrum we obtain. We also highlight a  ΛcΛc  bound state that has a pole consistent with the cross section of the e+e-→ ΛcΛc  precisely measured by the BESIII Collaboration. Related Articles | Metrics

Select

A Brief History of Solid State Physics SHI Feng , HAN Xiu-jun , ZHANG Ling-cui , XU Yue , ZHANG Chuan-jiang Progress in Physics    2021, 41 (4): 170-187.   DOI: 10.13725/j.cnki.pip.2021.04.002 Abstract （2887）      PDF （446KB）（9739）       The study of many-body problems in solid-state physics is an important branch of physics, covering a wide range of areas, and it is also the basis of many technical disciplines including materials science. This article discusses the brief history of the development of solid state physics, including the initial development history, the study of thermal properties, Weidmann-Franz law, the study history of the microscopic geometric structure of crystals, the free electron gas model, the energy band theory of solids, and the The research of solid magnetism, the information age, the development of solid state physics in China, and the teaching materials of solid state physics, etc., briefly describe the major events in the development of solid state physics, and the influential scientists and their contributions. Related Articles | Metrics

Select

Progress in Physics    2014, 34 (2): 47-117.   Abstract （801）      PDF （9236KB）（7766）       Related Articles | Metrics

Select

Progress in Physics    2016, 36 (1): 1-20.   Abstract （621）      PDF （5188KB）（2516）       Related Articles | Metrics

Select

Theoretical and simulational studies on the dynamics of polymer translocation Progress in Physics    2017, 37 (6): 212-224.   Abstract （683）      PDF （1074KB）（2664）       The translocation of polymer chains through nanotubes or nanopores is an important phenomenon which is highly concerned in physics, chemistry, and biology. It is of potential applications in life process and technology eld, and extensive experimental, theoretical, and simulation investiga- tions on this phenomenon have been carried out. This review article summarizes the latest theo- retical and simulation progress on the polymer translocation, and discusses the dynamic process of polymer chain translocation in the framework of translocation time. Based on the theoreti- cal calculations and simulations, the dependence of free energy landscape on the polymer-pore interaction, composition and charge distribution of polymer chain, details of nanopores, and tem- perature are discussed and compared with the predictions of free energy landscape. The results are helpful for a better understanding of the underlying mechanisms and controlling approaches of polymer translocation. Related Articles | Metrics

Select

Progress in Physics    2016, 36 (2): 46-63.   Abstract （467）      PDF （2125KB）（2189）       Related Articles | Metrics

Select

Study of the Synthesis of Super Heavy Nuclei Based on Dinuclear System WANG Yi-peng, GUO Shu-qing, BAO Xiao-jun, DENG Jun-gang, ZHANG Hong-fei Progress in Physics    2021, 41 (4): 157-169.   DOI: 10.13725/j.cnki.pip.2021.04.001 Abstract （888）      PDF （1138KB）（2696）       This review firstly introduces two low energy heavy ion reaction mechanisms. Then, based on these theories, we have developed a dinuclear system model describing the synthesis of super heavy nuclear. Different from Adamian’s calculation method, we solve the master equation numerically to describe the heavy ion fusion mechanism. This review chooses 1D to 3D different macroscopic degrees of freedom to illustrate the fusion of heavy ions, focusing on the development and evolution of the master equation during the fusion process, and providing a theoretical basis for further development of models and predictions of new nuclides in the future. Related Articles | Metrics

Select

Progress in Physics    2014, 34 (1): 1-9.   Abstract （681）      PDF （1363KB）（3011）       Related Articles | Metrics

Select

Spin Hall Effect of Light and Its Applications in Measurements of Physical Parameters LIU Shuo-qing , CHEN Shi-zhen , LUO Hai-lu Progress in Physics    2022, 42 (2): 35-53.   DOI: 10.13725/j.cnki.pip.2022.02.001 Abstract （2550）      PDF （8674KB）（3978）       The spin Hall effect (SHE) of light refers to the transverse spin-dependent splitting of photons with opposite spin angular momentum after the beam passes through inhomogeneous media, in the direction perpendicular to the incident plane. It can be regarded as an analogue of the SHE in electronic systems, where the spin photons and the refractive index gradient replace the spin electrons and the electronic potential, respectively. Fundamentally, the SHE of light originates from the spin-orbit interaction of photons and depends mainly on two different geometric phases, namely, the spin redirection Rytov-Vlasimirskii-Berry phase in the momentum space and the Pancharatnam-Berry phase in the Stokes parameter space. Meanwhile, the SHE of light exhibits great sensitivity to the physical parameters, and combined with quantum weak measurements, has important application prospects in fields of physical parameters measurement and optical sensing. We briefly analyze the physical origin of the SHE of light, review its recent progress in different physical systems, and present its applications in measurements of physical parameters. Finally, the possible developing trends in optical analog computing, microscopy imaging, and quantum imaging are discussed. Related Articles | Metrics

Select

Nonlinear Dynamics and Applications of Spin Hall Nano-Oscillators Liu Rong-Hua , Li Li-Yuan , Chen Li-Na , Zhou Kai-Yuan , Du You-Wei Progress in Physics    2020, 40 (6): 189-210.   DOI: 10.13725/j.cnki.pip.2020.06.003 Abstract （1697）      PDF （3549KB）（2384）       Spin Hall nano oscillator (SHNO), a new type spintronic nano-device, can generate microwave signal and excite coherent spin waves due to spin current-driven magnetization precession and have strong potential for applications from data storage，rf communication, microwave generation to neuromorphic computing. In this review, we focus on the complex nonlinear dynamic characteristics of spin-wave modes generated by SHNOs in the various ferromagnetic/nonmagnetic (FM/NM) bilayer systems with an extended free layer. Based on the abundantly previous experimental results obtained by combining microwave spectroscopy and micro-focused Brillouin light scattering techniques, as well as micromagnetic simulation, we detailedly describe and summarize the experimental parameters dependent magnetic dynamics of SHNOs with different device configurations and magnetic materials, such as in-plane nanogap-type, nanoconstriction-type, nanowire-type, vertical nanocontact-type SHNOs with in-plane or out-of-plane magnetization. Finally, we also discuss mutual synchronization of SHNO arrays and the potential applications in magnon-based logic devices with ultralow energy consumption and spin-based artificial neural network for neuromorphic computing in the field of artificial intelligence. Related Articles | Metrics

Select

The exotic electronic properties of the topological Kondo insulator SmB 6 ZHAO Gan, ZHANG Ming-yuan, WANG Jia-min, ZHANG Wang, MIAO Lin Progress in Physics    2021, 41 (6): 231-.   DOI: 10.13725/j.cnki.pip.2021.06.001 Abstract （1295）      PDF （9363KB）（3774）       The topological Kondo insulator (TKI) is an intrinsic electronic correlated topological system in which the bulk bandgap is originated from the Kondo correlation. Since the theoretical idea of TKI was proposed in 2010, SmB6 was predicted to be the first candidate topological Kondo insulator. In the last decade, SmB6 was investigated extensively by various experimental methods, and the accumulated evidence confirmed that SmB6 is a topological Kondo insulator. This review article presented some key experimental evidence, including electronic transportation measurements, ARPES study of low-energy band structure, and STM characterization of the surface. We also discussed how these experimental results establish the topological narrative of SmB6. Meanwhile, some extremely exotic properties like the 3D quantum oscillations and the bulk-surface valence seperation of SmB6 are exhibited. The related physical origin is still unknown and needs extra efforts to unveil the underlying physics. Related Articles | Metrics

Select

Emergent magnetism and ferroelectricity in perovskite superlattices Weng Ya-Kui, Dong Shuai Progress in Physics    2018, 38 (5): 181-199.   Abstract （599）      PDF （6513KB）（2044）       Perovskite transition-metal oxides have many degrees of freedom (e.g., lattice, charge, spin, and orbital). The couplings and competitions among these degrees of freedom can lead to numerous novel phenomena, such as high-temperature superconductivity, colossal magnetoresistance, and multiferroicity, which play important roles in the development of quantum devices. Interestingly, if two different materials are further coupled with each other, richer physical phenomena and more controllable performance will be presented through the interfacial lattice and electronic reconstructions. This review mainly focuses on the physical properties of perovskite superlattices, including magnetism, ferroelectricity and magnetoelectric coupling. First, several physical mechanisms associated with magnetic regulation are introduced. Then, hybrid improper ferroelectricity and electronic ferroelectricity are discussed. Finally, magnetoelectric coupling in perovskite superlattices is studied and reviewed. Related Articles | Metrics

Select

SOS: symmetry-operational similarity Li Xiang Progress in Physics    2020, 40 (1): 19-31.   Abstract （629）      PDF （1732KB）（1512）       Symmetry often governs condensed matter physics. The action of breaking symmetry spontaneously leads to phase transitions, and various observables or observable physical phenomena can be directly associated with broken symmetries. Examples include ferroelectric polarization, ferromagnetic magnetization, optical activities (including Faraday and magneto-optic Kerr rotations), second harmonic generation, photogalvanic effects, nonreciprocity, various Hall-effect-type transport properties, and multiferroicity. Herein, we propose that observable physical phenomena can occur when specimen constituents (i.e., lattice distortions or spin arrangements, in external fields or other environments, etc.) and measuring probes/quantities (i.e., propagating light, electrons or other particles in various polarization states, including vortex beams of light and electrons, bulk polarization or magnetization, etc.) share symmetry operational similarity (SOS) in relation to broken symmetries. The power of the SOS approach lies in providing simple and physically transparent views of otherwise unintuitive phenomena in complex materials. In turn, this approach can be leveraged to identify new materials that exhibit potentially desired properties as well as new phenomena in known materials. (Abstract compiled from Sang-Wook Cheong. npj Quantum Materials, 2019, 4: 53) Related Articles | Metrics

Select

Progress in Physics    2012, 32 (1): 33-56.   Abstract （649）      PDF （1672KB）（4080）       Related Articles | Metrics

Select

WANG Xue-li, PAN Hai-feng, CHEN Jin-quan Progress in Physics    2021, 41 (5): 199-208.   DOI: 10.13725/j.cnki.pip.2021.05.001 Abstract （690）      PDF （3667KB）（1692）       Epigenetic modification of nucleic acid plays a vital role in realizing the epigenetic functions in living organisms. It can participate the regulation of cell differentiation, gene expression and other important physiological processes. However, epigenetic modification may undermine the photostability of nucleic acid, which may turn the corresponding nucleobases into important mutation sites for diseases such as skin cancer. Therefore, it is of great significance to study the effect of epigenetic modification on the photophysical and photochemical properties of nucleobases. In this paper, we reviewed recent research progress on the excited state dynamics of a series of epigenetic modified nucleobases. With the help of femtosecond time-resolved spectroscopy and high level quantum chemistry calculations, we demonstrated that the effect of epigenetic modification on the excited state properties of nucleobases are mainly in three aspects: significantly increasing the lifetime of the bright ππ∗1 states, introducing intramolecular charge transfer states and effectively promoting intersystem crossing from singlet to triplet states. Related Articles | Metrics

Select

Gauge Field and Fiber Bundle：Its Contents, Methods, and Meanings  ZHAO Song-nian , LU Bo, CHEN Ken, HUANG Xu Progress in Physics    2023, 43 (1): 10-24.   DOI: 10.13725/j.cnki.pip.2023.01.002 Abstract （1830）      PDF （708KB）（3083）       Related Articles | Metrics

Select

Black Holes and Singularities Ong Yen Chin Progress in Physics    2020, 40 (2): 33-43.   Abstract （1001）      PDF （160KB）（1290）       Black holes are arguably the most extreme manifestation of gravity, with horizons that mark the boundary of no return beyond which nothing, not even light, can escape. Recently, remarkable progress has been made on the observational fronts, with the detection of gravitational wave produced by colliding black holes, and “direct” imaging of the supermassive black holes in the galaxy M87. On the theoretical side however, there remains a lot of unsolved mysteries in black hole physics. Of these, the information paradox is the most well-known. Nevertheless, there is another equally puzzling – if not more so – issue, which concerns the very heart of black holes: their singularities, where general relativity breaks down. What happens at the singularities of black holes? Can quantum gravity really remove black hole singularities? Is there a difference between Big Bang singularity and those inside black holes? More crucially, can singularities become naked, i.e. no longer shrouded by black hole horizon and therefore visible to ordinary observers? What is the status of the so-called “cosmic censorship conjecture”? In this review we will go through this topic at a semi-technical level, which is suitable for an ambitious undergraduate students in physics or mathematics. Related Articles | Metrics

Select

Progress in Physics    2012, 32 (2): 57-59.   Abstract （516）      PDF （5636KB）（3740）       Related Articles | Metrics