Chinese PhysicsPub Date : 2023-01-01DOI: 10.7498/aps.72.20231043
None He Xiao-An, None Yang Jia-Min, None Li Yu-Kun, None Li Jin, None Xiong gang
{"title":"Theoretical calculation of CsI photocathode’s response sensitivity of soft X-ray streak camera","authors":"None He Xiao-An, None Yang Jia-Min, None Li Yu-Kun, None Li Jin, None Xiong gang","doi":"10.7498/aps.72.20231043","DOIUrl":"https://doi.org/10.7498/aps.72.20231043","url":null,"abstract":"CsI photocathode's response sensitivity is an important parameter for the quantitative diagnosis of X-ray spectroscopy by soft X-ray streak camera, and its theoretical calculation has important guiding significance. The current theoretical analytical model are based on the one-dimensional random walking model of secondary electrons generated by thin film photocathodes, including the Henke model under the condition of normal incidence of X-rays and energy greater than 1keV, and the Fraser model under variable angle incidence and photocathode thickness greater than 100nm, which have certain limitations. In this paper, the basic expression of the probability of secondary electron transmission are introduced, and the general expression of the response sensitivity of CsI photocathode are deduced in a larger parameter range (X-ray energy 0.1-10keV, photocathode thickness 10-200nm) varies with X-ray energy E, photocathode thickness t, and the angle θ between X-ray and cathode surface. Finally, the theoretical calculation results of this paper are compare and discussed with the Henke model, Fraser model, literature data and experimental data on Beijing synchrotron radiation facility, which verifies the accuracy and universality of the computational model, and a theoretical reference is provided for the optimal design of CsI photocathode in high-time-resolution spectrometric quantitative measurement.","PeriodicalId":10252,"journal":{"name":"Chinese Physics","volume":"12 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136202530","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chinese PhysicsPub Date : 2023-01-01DOI: 10.7498/aps.72.20230993
None Zhang Shan-Liang, None Xing Hongxi, None Wang Enke
{"title":"Jet quenching in heavy-ion collisions","authors":"None Zhang Shan-Liang, None Xing Hongxi, None Wang Enke","doi":"10.7498/aps.72.20230993","DOIUrl":"https://doi.org/10.7498/aps.72.20230993","url":null,"abstract":"One of the main goals of high-energy nuclear physics is to explore the fundamental properties of quark-gluon plasma (QGP), a new state of quantum chromodynamics (QCD) matter created in relativistic heavy-ion collisions, in which the energetic quarks and gluons, known as fast partons, created prior to the formation of the QGP, traverse the hot-dense medium and experience strong interactions with the constituents of the medium, and eventually lead to the attenuation of jet energy. Such a novel phenomenon, referred to as jet quenching, plays an essential role in probing the transport properties of the QGP. The objective of this paper is to review some of the latest experimental and theoretical progress of jet quenching, such as medium modification on the large <inline-formula><tex-math id=\"M11111\">begin{document}$ p_{rm T} $end{document}</tex-math><alternatives><graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"20-20230993_M11111.jpg\"/><graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"20-20230993_M11111.png\"/></alternatives></inline-formula> hadrons, full jets, and jet substructures in heavy-ion collisions, as well as the challenges in the forefront theoretical investigations.","PeriodicalId":10252,"journal":{"name":"Chinese Physics","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136202955","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Thin-film lithium niobate photonic integrated devices: Progresses and opportunities","authors":"None Xiao Xiong, None Qi-Tao Cao, None Yun-Feng Xiao","doi":"10.7498/aps.72.20231295","DOIUrl":"https://doi.org/10.7498/aps.72.20231295","url":null,"abstract":"<sec>Lithium niobate, known as one of the most widely used nonlinear optical crystals, has recently received significant attention from both academia and industrial circles. The surge in interest can be attributed to the commercial availability of thin-film lithium niobate (TFLN) wafers and the rapid advancements in nanofabrication techniques. A milestone was achieved in 2020 with the successful fabrication of wafer-scale TFLN photonic integrated circuits, which paved the way for mass-producible and cost-effective manufacturing of TFLN-based products.</sec><sec>At present, the majority of research on TFLN photonic integrated devices focuses on light manipulation, i.e. field modulation and frequency conversion. The electro-optic, acousto-optic, photo-elastic and piezo-electric effects of lithium niobate are harnessed to modulate the amplitude, phase and frequency of light. The second-order and third-order nonlinearities of lithium niobate enable frequency conversion processes, which leads to the development of frequency converters, optical frequency combs, and supercontinuum generation devices. These exceptional optical properties of lithium niobate enable the electromagnetic wave to manipulate covering from radio-frequency to terahertz, infrared, and visible bands. Using the outstanding performance of TFLN photonic integrated devices, including remarkable modulation rate, wide operation bandwidth, efficient nonlinear frequency conversion, and low power consumption, diverse applications, such as spanning optical information processing, laser ranging, optical frequency combs, microwave optics, precision measurement, quantum optics, and quantum computing, are demonstrated.</sec><sec>Additionally, it is reported that TFLN-based lasers and amplifiers have made remarkable progress, and both optical and electrical pumps are available. These achievements include combining gain materials, such as rare-earth ions or heterostructures, with III-V semiconductors. The integration of low-dimensional materials or absorptive metals with TFLN can also realize TFLN-based detectors. These significant developments expand the potential applications of TFLN photonic integrated devices, thus paving the way for monolithic TFLN chips.</sec><sec>The versatility and high performances of TFLN photonic integrated devices have made revolutionary progress in these fields, opening up new possibilities for cutting-edge technologies and their practical implementations. In this point of view, we briefly introduce the development of TFLN nanofabricationn technology. Subsequently, we review the latest progress of TFLN photonic integrated devices, including lasers, functional nonlinear optical devices, and detectors. Finally, we discuss the future development directions and potential ways of TFLN photonics.</sec>","PeriodicalId":10252,"journal":{"name":"Chinese Physics","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135550689","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chinese PhysicsPub Date : 2023-01-01DOI: 10.7498/aps.72.20231128
Yu-Kai Wu, Lu-Ming Duan
{"title":"Research progress of ion trap quantum computing","authors":"Yu-Kai Wu, Lu-Ming Duan","doi":"10.7498/aps.72.20231128","DOIUrl":"https://doi.org/10.7498/aps.72.20231128","url":null,"abstract":"Ion trap is one of the leading physical platforms to implement quantum computation. Currently, high-fidelity elementary quantum operations above the fault-tolerant threshold, including state preparation, measurement and universal gates, have been demonstrated for tens of ionic qubits. One important future research direction is to further enlarge the qubit number to the scale required for solving practical problems while maintaining the high performance of individual qubits. This paper introduces the current mainstream schemes for scalable ion trap quantum computation like quantum charge-coupled device (QCCD) and ion-photon quantum network, and describes the main limiting factors in current research. Then we further explore new schemes to scale up the qubit number like two-dimensional ion crystals and dual-type qubit, and discuss the future research directions.","PeriodicalId":10252,"journal":{"name":"Chinese Physics","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135660056","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chinese PhysicsPub Date : 2023-01-01DOI: 10.7498/aps.73.20231322
None Wang Ning, None Huang Feng, None Chen Ying, None Zhu Guofeng, None Su Haobin, None Guo Cuixia, None Wang Xiangfeng
{"title":"Magnetic-Field-Induced Spin Reorientation in TmFeO<sub>3</sub> Single Crystals","authors":"None Wang Ning, None Huang Feng, None Chen Ying, None Zhu Guofeng, None Su Haobin, None Guo Cuixia, None Wang Xiangfeng","doi":"10.7498/aps.73.20231322","DOIUrl":"https://doi.org/10.7498/aps.73.20231322","url":null,"abstract":"TmFeO<sub>3</sub> exhibits rich physical properties such as the magneto-optical effect, multiferroicity, and spin reorientation, making it of significant research value in condensed matter physics and materials science. In this study, we utilized a time-domain terahertz magneto-optical spectroscopy system to investigate the change in spin resonance frequency of TmFeO<sub>3</sub> single crystals at T=1.6 K under external magnetic fields 0-7 T. The TmFeO<sub>3</sub> sample was grown in an optical floating zone furnace and its crystallographic orientation was determined using back-reflection Laue X-ray photography with a tungsten target. The measurement setup is a self-built time-domain terahertz magneto-optical spectroscopy system, with a magnetic field range of 0-7 T, a temperature range of 1.6-300 K, and a spectral range of 0.2-2.0 THz. A pair of 1mm-thick ZnTe nonlinear crystals were used to generate and detect terahertz signals through optical rectification and electro-optic sampling techniques. The system's variable temperature and magnetic field are controlled by a superconducting magnet. In experiments, a linearly polarized terahertz wave is incident perpendicularly to the sample surface, and its magnetic component H<sub>THz</sub> is parallel to the sample surface. By rotating the sample, the angle (q) between macroscopic magnetic moment M and H<sub>THz</sub>can be tuned, achieving selective excitations of the two modes, that is, q=0 for q-AFM mode or 90° for q-FM mode. Terahertz absorption spectroscopy results indicate that as the magnetic field increases, the quasi-ferromagnetic resonance (q-FM) of TmFeO<sub>3</sub> single crystal shifts towards high frequencies, and quasi-antiferromagnetic resonance (q-AFM) transitions to q-FM at low critical magnetic fields (2.2-3.6 T). Through magnetic structure analysis and theoretical fitting, it is confirmed that the magnetic moment of the single crystal undergoes magnetic field induced spin reorientation. This study contributes to a deeper understanding of the regulatory mechanism of the internal magnetic structure of rare earth ferrite under the combined effects of external magnetic field and temperature field, and the development of related spin electronic devices.","PeriodicalId":10252,"journal":{"name":"Chinese Physics","volume":"31 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136202910","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chinese PhysicsPub Date : 2023-01-01DOI: 10.7498/aps.72.20221965
Yin Wang, Si-Jie Zhou, Qiao Chen, Yong-He Deng
{"title":"Effect of energy level configuration on storage of optical solitons in InAs/GaAs quantum dot electromagnetically induced transparency medium","authors":"Yin Wang, Si-Jie Zhou, Qiao Chen, Yong-He Deng","doi":"10.7498/aps.72.20221965","DOIUrl":"https://doi.org/10.7498/aps.72.20221965","url":null,"abstract":"Based on the current growth technology of quantum dot in the experiment, considering that the probe fields and control fields at different frequencies are coupled between different energy levels of the InAs/GaAs quantum dot, the ladder-type, Λ-type and V-type energy level configurations can be formed. The linear and nonlinear properties of these energy level configurations of InAs/GaAs quantum dots are studied by using semiclassical theory combined with multiple scale method. It is shown that in the linear case, electromagnetic induction transparency windows can be formed among ladder-type, Λ-type and V-type energy level configurations. And the width of the transparent window increases with the strength of the control pulse increasing. For the nonlinear case, under the current experimental condition, optical solitons can be formed and stored in ladder-type configuration and <inline-formula><tex-math id=\"M6\">begin{document}$ {{Lambda }} $end{document}</tex-math><alternatives><graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"8-20221965_M6.jpg\"/><graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"8-20221965_M6.png\"/></alternatives></inline-formula>-type energy level configuration. However, optical solitons cannot be formed in the V-type energy level configurations, which is because the nonlinear effect of the system is very weak. Furthermore, it is demonstrated that the fidelity of the storage and retrieval of the optical solitons is higher than that of linear optical pulse and strongly nonlinear optical pulse. Interestingly, it is also found that the amplitude of stored optical solitons in <inline-formula><tex-math id=\"M8\">begin{document}$ {{Lambda }} $end{document}</tex-math><alternatives><graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"8-20221965_M8.jpg\"/><graphic xmlns:xlink=\"http://www.w3.org/1999/xlink\" xlink:href=\"8-20221965_M8.png\"/></alternatives></inline-formula>-type energy level configuration is higher than that in ladder-type energy level configuration. This study provides a theoretical basis for semiconductor quantum dot devices to modulate the amplitude of the stored optical solitons.","PeriodicalId":10252,"journal":{"name":"Chinese Physics","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134996511","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chinese PhysicsPub Date : 2023-01-01DOI: 10.7498/aps.72.20231229
None Yang Rui-Long, None Zhang Yu-Ying, None Yang Ke, None Jiang Qi-Tao, None Yang Xiao-Ting, None Guo Jin-Zhong, None Xu Xiao-Hong
{"title":"Growth and magnetic properties of two-dimensional vanadium-doped Cr<sub>2</sub>S<sub>3</sub> nanosheets","authors":"None Yang Rui-Long, None Zhang Yu-Ying, None Yang Ke, None Jiang Qi-Tao, None Yang Xiao-Ting, None Guo Jin-Zhong, None Xu Xiao-Hong","doi":"10.7498/aps.72.20231229","DOIUrl":"https://doi.org/10.7498/aps.72.20231229","url":null,"abstract":"Two-dimensional magnetic materials are emerging materials developed in recent years and have attracted much attention for their unique magnetic properties and structural features in single or few layers of atomic thickness. Among them, ferromagnetic materials have a wide range of applications such as information memory and processing. Therefore the current research is mainly focused on enriching the two-dimensional ferromagnetic database and developing modification strategies for magnetic modulation. In this paper, two-dimensional vanadium-doped Cr<sub>2</sub>S<sub>3</sub>nanosheets were successfully grown on mica substrates by atmospheric pressure chemical vapour deposition. The thickness and size of the nanosheets can be effectively regulated by changing the temperature and mass of vanadium source VCl<sub>3</sub> powders, with the temperature of 765℃ and the mass of 0.010 g as the most appropriate conditions for the growth of nanosheets. The nanosheets were also characterised by optical microscopy, atomic force microscopy, raman spectroscopy, scanning electron microscopy, X-ray energy spectroscopy, X-ray photoelectron spectroscopy, and the nanosheets were regular in shape, with flat surfaces and controllable thicknesses, and high quality vanadium-doped Cr<sub>2</sub>S<sub>3</sub> nanosheets were prepared. Meanwhile, the magnetic characterisation of the doped samples showed that the Curie transition temperature of the vanadium doped samples changed to 105 K, and the maximum magnetic moment point of 75 K in the M-T curve disappeared after V doping, and from subferromagnetic to ferromagnetic, and the coercivity in the M-H curve also increased significantly, which proved that the vanadium doping could effectively regulate the magnetic properties of Cr<sub>2</sub>S<sub>3</sub> nanosheets. These results are expected to advance the possibility of vanadium-doped Cr<sub>2</sub>S<sub>3</sub> materials toward practical applications and become one of the ideal candidate material for next generation spintronic applications.","PeriodicalId":10252,"journal":{"name":"Chinese Physics","volume":"76 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136202735","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chinese PhysicsPub Date : 2023-01-01DOI: 10.7498/aps.73.20231291
None Kong Meimei, None Xue Yinyan, None Xu Chunsheng, None Dong Yuan, None Liu Yue, None Pan Shicheng, None Zhao Rui
{"title":"Design and analysis of the biconvex liquid lens with circular hole plate electrode structure","authors":"None Kong Meimei, None Xue Yinyan, None Xu Chunsheng, None Dong Yuan, None Liu Yue, None Pan Shicheng, None Zhao Rui","doi":"10.7498/aps.73.20231291","DOIUrl":"https://doi.org/10.7498/aps.73.20231291","url":null,"abstract":"In this paper, based on the research of zoom liquid lens with parallel plate electrode and the principle of dielectrophoresis, a model of the biconvex liquid lens with circular hole plate electrode structure is proposed, which is a novel three-layer liquid lens structure. The dielectrophoretic effect refers to the phenomenon that free dielectric molecules will be polarized and moved by the force in a non-uniform electric field, thus deforming the dielectric liquid. In the dielectrophoretic liquid lens, only two insulating liquid materials with large refractive index difference and dielectric constant difference need to be selected, which can increase the selection range of liquid materials. The liquid lens structure mainly consists of a piece of double-sided conductive flat plate ITO glass with a circular hole and two pieces of single-sided conductive flat plate ITO glass, which respectively form two sets of flat electrode structures to control the upper and lower interfaces of the liquid droplet. In this structure, the influence of the intermediate glass plate on the focus and imaging is reduced by using the flat plate electrode with circular hole. The theoretical analysis of the structure is carried out with simulation software. Firstly, the models of the biconvex liquid lens with circular hole plate electrode under different voltages are built with Comsol software, the data of upper and lower interfaces of the liquid droplet are exported. Then by using Matlab, the surface shapes of the upper and lower interfaces of the droplet are fitted and the corresponding aspheric coefficients are obtained. Finally, the optical models are built with Zemax software, the imaging optical paths and the variation range of focal length under different voltages are analyzed. On the basis of the simulation, the corresponding device is manufactured, and the specific experimental analysis is carried out. The surface pattern of the upper and lower interfaces of the droplet of the biconvex liquid lens under different voltages are recorded, the focal length and imaging resolution of the liquid lens are measured. When the operating voltage is 0V-260V, the focal length varies from 23.8mm to 17.5mm, which is basically consistent with the simulation results(22.6mm-15.9mm). The feasibility of the structure of the biconvex liquid lens with circular hole plate electrode structure is verified by experiments. The imaging resolution can reach 45.255 lp/mm. The results show that this proposed novel three-layer liquid structure of the biconvex liquid lens has the characteristics of simple structure, easy to realize and good imaging quality. Therefore, the research of this biconvex liquid lens can provide a new idea for expanding the high-resolution imaging research of liquid lenses and their applications.","PeriodicalId":10252,"journal":{"name":"Chinese Physics","volume":"22 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136052495","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Chinese PhysicsPub Date : 2023-01-01DOI: 10.7498/aps.72.20231030
None Zhen Fang, None You Yu, None Qiu ye Zhao, None Yu dong Zhang, None Zhi Qiang Wang, None Zu Xing Zhang
{"title":"Spectral pulsation dynamics of soliton molecules in ultrafast fiber lasers based on pump intensity modulation","authors":"None Zhen Fang, None You Yu, None Qiu ye Zhao, None Yu dong Zhang, None Zhi Qiang Wang, None Zu Xing Zhang","doi":"10.7498/aps.72.20231030","DOIUrl":"https://doi.org/10.7498/aps.72.20231030","url":null,"abstract":"This study employs real-time Fourier transform spectroscopy to investigate the pulsation dynamics of soliton molecules in a mode-locked erbium-doped fiber laser, utilizing pump intensity modulation. By manipulating the driving voltage of the pump source, we systematically observe and characterize the impact of external modulation signals on the amplitude, period, pulsation frequency, and the relative phase evolution among the pulsating soliton molecules within their spectra.The results demonstrate that, under specific conditions of pump intensity modulation, the pulsation period of soliton molecule spectra can be precisely regulated by the pump modulation frequency. Concurrently, the amplitude of soliton molecule pulsations and the evolution of relative phase among the solitons are intricately tied to the pump modulation frequency. At lower modulation frequencies, such as 1 kHz, the relative phase among the pulses within the soliton molecule exhibits a sliding-type dynamics as a function of propagation time.As the modulation frequency gradually increases, e.g., to 5 kHz, a scenario emerges where three soliton molecules are generated. Notably, both the soliton spacing and relative phase undergo synchronous adjustments influenced by the pump modulation. With further escalation of the modulation frequency, such as to 20 kHz, the relative phase evolution among the pulses within the soliton molecule gradually descends into chaos. This observation suggests the plausible existence of an inherent resonant frequency associated with pulsating soliton molecules, which has direct implications for their stability.The findings of this research hold significant relevance for advancing our comprehension of soliton molecule generation and enhancing their stability. Furthermore, they offer valuable insights into the broader domain of all-optical manipulation and applications of soliton molecules, as well as their utilization in pulse encoding within mode-locked laser systems.","PeriodicalId":10252,"journal":{"name":"Chinese Physics","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136052988","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Progress of Two-Dimensional Magnetic Materials for Spin Orbit Torque","authors":"None Yinong Xiong, None Chuangwen, None Chuantong Ren, None Dequan Meng, None Shiwei Chen, None Shiheng Liang","doi":"10.7498/aps.73.20231244","DOIUrl":"https://doi.org/10.7498/aps.73.20231244","url":null,"abstract":"The rapid development of information technology has put forward higher requirements for the performance of information processing and storage devices. At the same time, with the continuous reduction of device size, traditional semiconductor devices based on electron charge properties face the problems and challenges of thermal dissipation and quantum size effect, and semiconductor technology has entered the post-molar era. Unlike traditional charge-based electronic devices, spin-based non-volatile Spintronic devices not only have high integrated density, read and write speed and read and write times, but also can effectively avoid heat dissipation, establishing a new technical platform for the development of information storage, processing and communication. In recent years, two-dimensional materials have attracted a lot of attention due to their unique band structure and rich physical properties. Two-dimensional magnetic materials have shown great research and application potential in the field of Spintronics. Compared to traditional block materials, the atomic thickness, ultra-clean interface and flexible stacking of two-dimensional materials provide great opportunities for exploring novel physical effects and ultra-low-power devices. At the same time, with the rise of topological materials (TMs), their topological protected band structures, diversified crystal structures and symmetries, strong spin-orbit coupling and adjustable electrical conductivity provide an ideal physical research platform for spintronics research. In this paper, we first introduce the common methods of preparing two-dimensional materials, then focus on the research progress of two-dimensional magnetic materials in the field of spin-orbit electronics, and finally look forward to the research challenges in this field. In the future, with continuous in-depth research on the preparation, physical properties and device applications of two-dimensional magnetic materials, two-dimensional magnetic materials will show more extensive research prospects and application value in the field of spintronics. Two-dimensional magnetic materials will provide more material systems for spintronics development.","PeriodicalId":10252,"journal":{"name":"Chinese Physics","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136054192","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}