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A search for radio pulsars in supernova remnants using FAST with one pulsar discovered 利用 FAST 搜寻超新星遗迹中的射电脉冲星，发现一颗脉冲星
IF 3.5 2区 物理与天体物理
Chinese Physics Letters Pub Date : 2024-01-04 DOI: 10.1088/0256-307x/41/2/029701
Zhen Zhang, Wenming Yan, J. Yuan, Na Wang, Juntao Bai, Zhigang Wen, Baoda Li, Jintao Xie, De Zhao, Yubin Wang, Nannan Zhai
{"title":"A search for radio pulsars in supernova remnants using FAST with one pulsar discovered","authors":"Zhen Zhang, Wenming Yan, J. Yuan, Na Wang, Juntao Bai, Zhigang Wen, Baoda Li, Jintao Xie, De Zhao, Yubin Wang, Nannan Zhai","doi":"10.1088/0256-307x/41/2/029701","DOIUrl":"https://doi.org/10.1088/0256-307x/41/2/029701","url":null,"abstract":"\u0000 We report on the results of a search for radio pulsars in five supernova remnants (SNRs) with FAST. The observations were made using the 19-beam receiver in the Snapshot mode. The integration time for each pointing is 10 min. We discovered a new pulsar PSR J1845$-$0306 which has a spin period of 983.6 ms and a dispersion measure of 444.6$pm$2.0 cm$^{-3}$ pc in observations of SNR G29.6+0.1. To judge the association between the pulsar and the SNR, further verification is needed. We also re-detected some known pulsars in the data from SNRs G29.6+0.1 and G29.7$-$0.3. No pulsars were detected in observations of other three SNRs.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"24 15","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-01-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139385288","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Profiling Electronic and Phononic Band Structures of Semiconductors at Finite Temperatures: Methods and Applications 在有限温度下剖析半导体的电子和声带结构：方法与应用
IF 3.5 2区 物理与天体物理
Chinese Physics Letters Pub Date : 2024-01-02 DOI: 10.1088/0256-307x/41/2/026301
Xie Zhang, Jun Kang, Su-Huai Wei
{"title":"Profiling Electronic and Phononic Band Structures of Semiconductors at Finite Temperatures: Methods and Applications","authors":"Xie Zhang, Jun Kang, Su-Huai Wei","doi":"10.1088/0256-307x/41/2/026301","DOIUrl":"https://doi.org/10.1088/0256-307x/41/2/026301","url":null,"abstract":"\u0000 Semiconductor devices are often operated at elevated temperatures that are well above zero Kelvin, which is the temperature in most first-principles density functional calculations. Computational approaches to computing and understanding the properties of semiconductors at finite temperatures are thus in critical demand. In this review, we discuss the recent progress in computationally assessing the electronic and phononic band structures of semiconductors at finite temperatures. As an emerging semiconductor with particularly strong temperature-induced renormalization of the electronic and phononic band structures, halide perovskites are used as a representative example to demonstrate how computational advances may help to understand the band structures at elevated temperatures. Finally, we briefly illustrate the remaining computational challenges and outlook promising research directions that may help to guide future research in this field.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"14 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139390739","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Predicted Critical State Based on Invariance of the Lyapunov Exponent in Dual Spaces 基于双重空间中 Lyapunov 指数不变性的临界状态预测
IF 3.5 2区 物理与天体物理
Chinese Physics Letters Pub Date : 2024-01-01 DOI: 10.1088/0256-307x/41/1/017102
Tong Liu, Xu Xia
{"title":"Predicted Critical State Based on Invariance of the Lyapunov Exponent in Dual Spaces","authors":"Tong Liu, Xu Xia","doi":"10.1088/0256-307x/41/1/017102","DOIUrl":"https://doi.org/10.1088/0256-307x/41/1/017102","url":null,"abstract":"Critical states in disordered systems, fascinating and subtle eigenstates, have attracted a lot of research interests. However, the nature of critical states is difficult to describe quantitatively, and in general, it cannot predict a system that hosts the critical state. We propose an explicit criterion whereby the Lyapunov exponent of the critical state should be 0 simultaneously in dual spaces, namely the Lyapunov exponent remains invariant under the Fourier transform. With this criterion, we can exactly predict a one-dimensional quasiperiodic model which is not of self-duality, but hosts a large number of critical states. Then, we perform numerical verification of the theoretical prediction and display the self-similarity of the critical state. Due to computational complexity, calculations are not performed for higher dimensional models. However, since the description of extended and localized states by the Lyapunov exponent is universal and dimensionless, utilizing the Lyapunov exponent of dual spaces to describe critical states should also be universal. Finally, we conjecture that some kind of connection exists between the invariance of the Lyapunov exponent and conformal invariance, which can promote the research of critical phenomena.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"135 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2024-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139762423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Two-body hadronic weak decays of bottomed hadrons 底层强子的二体强子弱衰变
IF 3.5 2区 物理与天体物理
Chinese Physics Letters Pub Date : 2023-12-29 DOI: 10.1088/0256-307x/41/2/021301
Ying Zhang, Guangzhao He, Quanxing Ye, Da-Cheng Yan, Jun Hua, Qian Wang
{"title":"Two-body hadronic weak decays of bottomed hadrons","authors":"Ying Zhang, Guangzhao He, Quanxing Ye, Da-Cheng Yan, Jun Hua, Qian Wang","doi":"10.1088/0256-307x/41/2/021301","DOIUrl":"https://doi.org/10.1088/0256-307x/41/2/021301","url":null,"abstract":"The structure of light diquarks plays a crucial role in the formation of exotic hadrons beyond the conventional quark model, especially in their line shapes of bottomed hadron decays. We study the two-body hadronic weak decays of bottomed baryons and bottomed mesons to probe the light diquark structure and pin down the quark-quark correlations in the diquark picture. We find that the light diquark does not favor a compact structure. For instance, the isoscalar diquark $[ud]$ in $Lambda_{b}^{0}$ can be easily split and rearranged to form $Sigma_{c}^{(*)}bar{D}^{(*)}$ via the color-suppressed transition. This provides a hint that the hidden charm pentaquark states produced in $Lambda^0_b$ decays could be the $Sigma_{c}^{(*)}bar{D}^{(*)}$ hadronic molecular candidates. This quantitative study resolves the apparent conflicts between the production mechanism and molecular nature of these $P_c$ states observed in experiment.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":" 32","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139144447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Modulation of high-order harmonic generation from a monolayer ZnO by co-rotating two-color circularly polarized laser fields 同向旋转双色圆偏振激光场对单层氧化锌高阶谐波产生的调制
IF 3.5 2区 物理与天体物理
Chinese Physics Letters Pub Date : 2023-12-22 DOI: 10.1088/0256-307x/41/1/014205
Yue Qiao, Jiaqi Chen, Shushan Zhou, Jigen Chen, Shicheng Jiang, Yu-Jun Yang
{"title":"Modulation of high-order harmonic generation from a monolayer ZnO by co-rotating two-color circularly polarized laser fields","authors":"Yue Qiao, Jiaqi Chen, Shushan Zhou, Jigen Chen, Shicheng Jiang, Yu-Jun Yang","doi":"10.1088/0256-307x/41/1/014205","DOIUrl":"https://doi.org/10.1088/0256-307x/41/1/014205","url":null,"abstract":"\u0000 By numerically solving the two-dimensional semiconductor Bloch equation, this paper studies the high-order harmonic emission of a monolayer ZnO under the driving of co-rotating two-color circularly polarized laser pulses. By changing the relative phase between the fundamental frequency field and the second one, it is found that the harmonic intensity in the platform region can be significantly modulated. In the higher order, the harmonic intensity can be increased by about one order of magnitude. Through time-frequency analysis, it is demonstrated that the the emission trajectory of monolayer ZnO can be cotrolled by the relative phase, and the harmonic enhacment is caused by the second quantum trajectory with the higher emission probability. In addition, near-circularly polarized harmonics can be generated in the co-rotating two-color circularly polarized fields. With the change of the relative phase, the harmonics in the platform region can be altered from left-handed near-circularly polarization to right-handed one. Our results can obtain high-intensity harmonic radiation with an adjustable ellipticity, which provides an opportunity for the synthesis of circularly polarized attosecond pulses.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"5 41","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138944981","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Exploring sulfur chemistry in TMC-1 with NSRT 利用 NSRT 探索 TMC-1 中的硫化学性质
IF 3.5 2区 物理与天体物理
Chinese Physics Letters Pub Date : 2023-12-21 DOI: 10.1088/0256-307x/41/2/029501
Wasim Iqbal, Xiaohu Li, Juan Tuo, Ryszard Szczerba, Yanan Feng, Zhenzhen Miao, Jiangchao Yang, Jixing Ge, Gleb Fedoseev, Donghui Quan, Qiang Chang, Chuan-Lu Yang, Tao Yang, Gao-Lei Hou, Yong Zhang, Xuan Fang, Xia Zhang, Fangfang Li, Rong Ma, Xiaomin Song, Zhiping Kou, Yuxuan Sun
{"title":"Exploring sulfur chemistry in TMC-1 with NSRT","authors":"Wasim Iqbal, Xiaohu Li, Juan Tuo, Ryszard Szczerba, Yanan Feng, Zhenzhen Miao, Jiangchao Yang, Jixing Ge, Gleb Fedoseev, Donghui Quan, Qiang Chang, Chuan-Lu Yang, Tao Yang, Gao-Lei Hou, Yong Zhang, Xuan Fang, Xia Zhang, Fangfang Li, Rong Ma, Xiaomin Song, Zhiping Kou, Yuxuan Sun","doi":"10.1088/0256-307x/41/2/029501","DOIUrl":"https://doi.org/10.1088/0256-307x/41/2/029501","url":null,"abstract":"\u0000 Several studies have investigated sulfur depletion in dense cores like TMC-1, employing updated reaction networks for sulfur species to explain the missing sulfur in the gas within dense clouds. Most of these studies used a C/O ratio of 0.7 or lower. In this study, we present NSRT observations toward TMC-1 alongside results from time-dependent chemical simulations using an updated chemical network. Our findings highlight the impact of the C/O ratio on the gas-phase evolution of C2S and C3S. The simulation results show that the C/O ratio is an important parameter, playing a fundamental role in determining the gas-phase abundances of sulfur species in dense cores.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"5 5","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138951094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
The ground state and its topological properties of 3D spin-orbit Coupled Degenerate Fermi Gases 三维自旋轨道耦合退化费米气体的基态及其拓扑特性
IF 3.5 2区 物理与天体物理
Chinese Physics Letters Pub Date : 2023-12-14 DOI: 10.1088/0256-307x/40/12/127402
Long Xiong, Ming Gong, ZhaoXiang Fang, Rui Sun
{"title":"The ground state and its topological properties of 3D spin-orbit Coupled Degenerate Fermi Gases","authors":"Long Xiong, Ming Gong, ZhaoXiang Fang, Rui Sun","doi":"10.1088/0256-307x/40/12/127402","DOIUrl":"https://doi.org/10.1088/0256-307x/40/12/127402","url":null,"abstract":"\u0000 3D degenerate Fermi gases in the presence of spin-orbit coupling, inducing various kinds of physical findings and phenomena, have attracted tremendous attention in these years. Here, we investigate the 3D spin-orbit Coupled degenerate Fermi gases in theory and first present the analytic expression of its ground state. Besides, our study have provided an innovative perspective into understanding the topological properties of a 3D unconventional superconductors, and described the topological phase transitions in trivial and topological phase areas, respectively. Further, such system is provided with a richer set of Cooper pairings than traditional superconductors; the dual Cooper pairs with same spin directions emerge and exhibit peculiar behaviors, leading to topological phase transitions. Our study and discussion can be generalized to some other types of unconventional superconductors and the areas of optical lattices.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"12 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138972248","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Three-wave mixing of dipole solitons in one-dimensional quasi-phase-matched nonlinear crystals 一维准相位匹配非线性晶体中偶极孤子的三波混合
IF 3.5 2区 物理与天体物理
Chinese Physics Letters Pub Date : 2023-12-14 DOI: 10.1088/0256-307x/41/1/014204
Yuxin Guo, Xiaoxi Xu, Zhaopin Chen, Yangui Zhou, Bin Liu, Hexiang He, Yongyao Li, Jianing Xie
{"title":"Three-wave mixing of dipole solitons in one-dimensional quasi-phase-matched nonlinear crystals","authors":"Yuxin Guo, Xiaoxi Xu, Zhaopin Chen, Yangui Zhou, Bin Liu, Hexiang He, Yongyao Li, Jianing Xie","doi":"10.1088/0256-307x/41/1/014204","DOIUrl":"https://doi.org/10.1088/0256-307x/41/1/014204","url":null,"abstract":"\u0000 In this paper, a quasi-phase-matched (QPM) technique is introduced for soliton transmission in a quadratic (x\u0000 (2)) nonlinear crystal to realize stable transmission of dipole solitons in one-dimensional (1D) space under three-wave mixing. We report four types of solitons as dipole solitons with distances between their bimodal peaks that can be laid out in different stripes. We study three cases of these solitons: spaced three stripes apart, one stripe apart, and confined to the same stripe. For the case of three stripes apart, all four types have stable results, but for the case of one stripe apart, stable solutions can only be found at w\u0000 1 = w\u0000 2, and for the condition of dipole solitons confined to one stripe, stable solutions exist only for Type1 and Type3 at w\u0000 1 = w\u0000 2. The stability of the soliton solution is solved and verified using the imaginary time propagation (ITP) method and real-time transfer propagation (RTP), and soliton solutions are shown to exist in the multistability case. In addition, the relations of the transportation characteristics of the dipole soliton and the modulation parameters are numerically investigated. Finally, possible approaches for experimental realization of the solitons are outlined.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"207 3","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139002314","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Experimentally ruling out joint reality based on locality with device-independent steering 通过实验排除基于位置性的联合现实，转向与设备无关
IF 3.5 2区 物理与天体物理
Chinese Physics Letters Pub Date : 2023-12-14 DOI: 10.1088/0256-307x/41/1/010301
Shuaining Zhang, Xiang Zhang, Zhiyue Zheng, Wei Zhang
{"title":"Experimentally ruling out joint reality based on locality with device-independent steering","authors":"Shuaining Zhang, Xiang Zhang, Zhiyue Zheng, Wei Zhang","doi":"10.1088/0256-307x/41/1/010301","DOIUrl":"https://doi.org/10.1088/0256-307x/41/1/010301","url":null,"abstract":"\u0000 As an essential concept to understand the world, whether the real values (or physical realities) of observables are suitable to the physical systems beyond classic has been debated for many decades. Although standard nogo results based on Bell inequalities have ruled out the joint reality of incompatible quantum observables, the possibility of giving simple yet strong arguments to rule out joint reality in any physical system (not necessarily quantum) with weaker assumptions and less observables, has been explored and proposed recently. Here, we perform a device-independent experiment on two-qubit superconducting system to show the joint reality of two observables is incompatible with locality under weaker assumption of the reality of observables in a single space-time region (or single qubit). Our results clearly show the violation of certain inequalities derived from both linear and nonlinear criteria. In addition, we study the robustness of the linear and nonlinear criterion against the effect of systematic decoherence. Our demonstration opens up the possibility of delineating classical and non-classical boundary with simpler nontrivial quantum system.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"204 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138975386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Acoustic bilayer gradient metasurfaces for perfect and asymmetric beam splitting 用于完美和非对称分束的声学双层梯度元表面
IF 3.5 2区 物理与天体物理
Chinese Physics Letters Pub Date : 2023-12-14 DOI: 10.1088/0256-307x/41/1/014301
Jiaqi Quan, Baoyin Sun, Yangyang Fu, Lei Gao, Yadong Xu
{"title":"Acoustic bilayer gradient metasurfaces for perfect and asymmetric beam splitting","authors":"Jiaqi Quan, Baoyin Sun, Yangyang Fu, Lei Gao, Yadong Xu","doi":"10.1088/0256-307x/41/1/014301","DOIUrl":"https://doi.org/10.1088/0256-307x/41/1/014301","url":null,"abstract":"\u0000 We experimentally and theoretically present a paradigm for the accurate bilayer design of gradient metasurfaces for wave beam manipulation, producing extremely asymmetric splitting effect by simply tailoring the interlayer size. This concept arises from the anomalous diffraction in phase gradient metasurfaces and the precise combination of the phase gradient in bilayer metasurfaces. Ensured by different diffraction routes in momentum space for incident beam from opposite direction, extremely asymmetric acoustic beam splitting can be generated in a robust way, as demonstrated through a designed bilayer system in experiments. Our work provides a novel approach and feasible platform to design tunable devices for the control of wave propagation.","PeriodicalId":10344,"journal":{"name":"Chinese Physics Letters","volume":"210 1","pages":""},"PeriodicalIF":3.5,"publicationDate":"2023-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138975382","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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