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First-principles study of structural and electronic properties of multiferroic oxide Mn3TeO6 under high pressure 高压下多铁性氧化物 Mn3TeO6 结构和电子特性的第一性原理研究
IF 1.7 4区 物理与天体物理
Chinese Physics B Pub Date : 2024-04-16 DOI: 10.1088/1674-1056/ad3ef6
XiaoTong Pan, Hao Wang, Lei Liu, Xiang-Rong Chen, Hua Y. Geng
{"title":"First-principles study of structural and electronic properties of multiferroic oxide Mn3TeO6 under high pressure","authors":"XiaoTong Pan, Hao Wang, Lei Liu, Xiang-Rong Chen, Hua Y. Geng","doi":"10.1088/1674-1056/ad3ef6","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3ef6","url":null,"abstract":"\u0000 Mn3TeO6 (MTO) has been experimentally found to adopt a P21/n structure under high pressure, which exhibits a significantly smaller band gap compared to the atmospheric R3 phase. In this study, we systematically investigate the magnetism, structural phase transition and electronic properties of MTO under high pressure through first-principles calculations. Both R3 and P21/n phases of MTO are antiferromagnetic at zero temperature. The R3 phase transforms to the P21/n phase at 7.58 GPa, accompanied by a considerable volume collapse of about 6.47%. Employing the accurate method that combines DFT+U and G0W0, the calculated band gap of R3 phase at zero pressure is very close to the experimental values, while that of the P21/n phase is significantly overestimated. The main reason for this difference is that the experimental study incorrectly used the Kubelka-Munk plot for the indirect band gap to obtain the band gap of the P21/n phase instead of the Kubelka-Munk plot for the direct band gap. Furthermore, our study reveals that the transition from the R3 phase to the P21/n phase is accompanied by a slight reduction in the band gap.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-04-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140695797","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Dynamically enhanced Autler-Townes splitting by orthogonal XUV Fields 通过正交 XUV 场动态增强 Autler-Townes 分裂功能
IF 1.7 4区 物理与天体物理
Chinese Physics B Pub Date : 2024-04-12 DOI: 10.1088/1674-1056/ad3dd3
Li-Long Wu, Weichao Jiang, Liang-You Peng
{"title":"Dynamically enhanced Autler-Townes splitting by orthogonal XUV Fields","authors":"Li-Long Wu, Weichao Jiang, Liang-You Peng","doi":"10.1088/1674-1056/ad3dd3","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3dd3","url":null,"abstract":"\u0000 Based on numerical solutions of the time-dependent Schrödinger equation, we have theoretically investigated the photoelectron spectrum of hydrogen atoms ionized by a pair of ultrashort, intense, and orthogonally polarized laser pulses with a relative time delay in a pump-probe configuration. The pump pulse resonantly excites electrons from the 1s and 2p levels, inducing Rabi oscillations. The resulting dynamically enhanced Autler-Townes (AT) splitting is observed in the photoelectron energy spectrum upon interaction with the second probe pulse. In contrast to previous parallel-polarization scheme, the proposed orthogonal-polarization configuration enables the resolution of dynamically enhanced AT splitting over a considerably wider range of probe photon energies.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140709346","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Controlling the dynamic behavior of decentralized cluster through centralized approaches 通过集中式方法控制分散式集群的动态行为
IF 1.7 4区 物理与天体物理
Chinese Physics B Pub Date : 2024-04-12 DOI: 10.1088/1674-1056/ad3dd0
Daming Yuan, Peilong Wang, Peng Wang, Xingyu Ma, Chuyun Wang, Jing Wang, Huaicheng Chen, Gao Wang, Fangfu Ye
{"title":"Controlling the dynamic behavior of decentralized cluster through centralized approaches","authors":"Daming Yuan, Peilong Wang, Peng Wang, Xingyu Ma, Chuyun Wang, Jing Wang, Huaicheng Chen, Gao Wang, Fangfu Ye","doi":"10.1088/1674-1056/ad3dd0","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3dd0","url":null,"abstract":"\u0000 How to control the dynamic behavior of large-scale artificial active matter is a critical concern in experimental research on soft matter, particularly regarding the emergence of collective behaviors and the formation of group patterns. Centralized systems excel in precise control over individual behavior within a group, ensuring high accuracy and controllability in task execution. Nevertheless, their sensitivity to group size may limit adaptability to diverse tasks. In contrast, decentralized systems empower individuals with autonomous decision-making, enhancing adaptability and system robustness. Yet, this flexibility comes at the cost of reduced accuracy and efficiency in task execution. In this work, we present a unique method for regulating the centralized dynamic behavior of self-organizing clusters based on environmental interactions. Within this environment-coupled robot system, each robot possesses similar dynamic characteristics, and their internal programs are entirely identical. However, their behaviors can be guided by the centralized control of the environment, facilitating the accomplishment of diverse cluster tasks. This approach aims to balance the accuracy and flexibility of centralized control with the robustness and task adaptability of decentralized control. The proactive regulation of dynamic behavioral characteristics in active matter groups, demonstrated in this work through environmental interactions, holds the potential to introduce a novel technological approach and provide experimental references for studying the dynamic behavior control of large-scale artificial active matter systems.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140712237","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Bipartite consensus problems of Lurie multi-agent systems over signed graphs: A contraction approach 有符号图上 Lurie 多代理系统的两方共识问题：一种收缩方法
IF 1.7 4区 物理与天体物理
Chinese Physics B Pub Date : 2024-04-12 DOI: 10.1088/1674-1056/ad3dca
Xiaojiao Zhang, Xiang Wu
{"title":"Bipartite consensus problems of Lurie multi-agent systems over signed graphs: A contraction approach","authors":"Xiaojiao Zhang, Xiang Wu","doi":"10.1088/1674-1056/ad3dca","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3dca","url":null,"abstract":"\u0000 This paper examines the bipartite consensus problems for the nonlinear multi-agent systems in Lurie dynamics form with cooperative and competitive communication between different agents. Based on the contraction theory, some new conditions for the nonlinear Lurie multi-agent systems reaching bipartite leaderless consensus and bipartite tracking consensus are presented, respectively. Compared with the traditional methods, this approach degrades the dimensions of the conditions, eliminates some restrictions of the system matrix and extends the range of the nonlinear function. Finally, two numerical examples are provided to illustrate the efficiency of our results.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140710053","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Event-based nonfragile state estimation for memristive recurrent neural networks with stochastic cyber-attacks and sensor saturations 具有随机网络攻击和传感器饱和度的基于事件的非脆弱状态估计记忆递归神经网络
IF 1.7 4区 物理与天体物理
Chinese Physics B Pub Date : 2024-04-12 DOI: 10.1088/1674-1056/ad3dcb
Xiaoguang Shao, Jie Zhang, Yan Lu
{"title":"Event-based nonfragile state estimation for memristive recurrent neural networks with stochastic cyber-attacks and sensor saturations","authors":"Xiaoguang Shao, Jie Zhang, Yan Lu","doi":"10.1088/1674-1056/ad3dcb","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3dcb","url":null,"abstract":"\u0000 This paper addresses the issue of nonfragile state estimation (SE) for memristive recurrent neural networks (MRNNs) with proportional delay and sensor saturations. In practical engineering, numerous unnecessary signals are transmitted to the estimator through the networks, which increases the burden of communication bandwidth. In this paper, a dynamic event-triggered mechanism (DETM) is employed to select useful data instead of a static event-triggered mechanism. By constructing a meaningful LyapunovKrasovskii functional (LKF), a delay-dependent criterion is derived in terms of linear matrix inequalities (LMIs) for ensuring the global asymptotic stability of the augmented system. In the end, two numerical simulations are employed to illustrate the feasibility and validity of the proposed theoretical results.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140711334","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Proposal for a realtime Einstein-synchronization-defined satellite virtual clock 关于爱因斯坦同步定义的实时卫星虚拟时钟的建议
IF 1.7 4区 物理与天体物理
Chinese Physics B Pub Date : 2024-04-12 DOI: 10.1088/1674-1056/ad3dc9
Chenhao Yan, Xueyi Tang, Shiguang Wang, Lijiaoyue Meng, Haiyuan Sun, Yibin He, Lijun Wang
{"title":"Proposal for a realtime Einstein-synchronization-defined satellite virtual clock","authors":"Chenhao Yan, Xueyi Tang, Shiguang Wang, Lijiaoyue Meng, Haiyuan Sun, Yibin He, Lijun Wang","doi":"10.1088/1674-1056/ad3dc9","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3dc9","url":null,"abstract":"\u0000 The realization of high performance satellite onboard clock is vital for various PNT applications. For further improvement of the synchronization-based satellite time and frequency references, this paper proposes a geosynchronous (GEO) satellite virtual clock concept based on ground–satellite synchronization and presents a beacon transponder structure for its implementation (scheduled for launch in 2025), which does not require atomic clocks to be mounted on the satellite. Its high performance relies only on minor modifications to the existing transponder structure of GEO satellites. We carefully modeled the carrier phase link and analyzed the factors causing link asymmetry within the special relativity. Considering that the performance of such synchronization-based satellite clocks is primarily limited by the link’s random phase noise, which cannot be adequately modeled, we designed a closed-loop experiment based on commercial GEO satellites for pre-evaluation. This experiment was aimed at extracting the zero-means random part of the ground-satellite Ku-band carrier phase via a feedback loop. Ultimately, we obtained a 1σ value of 0.633 ps (two-way link), following the Gaussian distribution. From this result, we conclude that the proposed real-time Einstein-synchronization-defined satellite virtual clock can achieve picosecond-level replication of onboard time and frequency.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140712154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Verifying hierarchical network nonlocality in general quantum networks 验证一般量子网络中的分层网络非局域性
IF 1.7 4区 物理与天体物理
Chinese Physics B Pub Date : 2024-04-12 DOI: 10.1088/1674-1056/ad3dd5
Shuyuan Yang, Jinchuan Hou, Kan He
{"title":"Verifying hierarchical network nonlocality in general quantum networks","authors":"Shuyuan Yang, Jinchuan Hou, Kan He","doi":"10.1088/1674-1056/ad3dd5","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3dd5","url":null,"abstract":"\u0000 Recent, the notions of fully and l-level quantum network nonlocality (FQNN and l-QNN) have been proposed to investigate quantum network nonlocality who cannot be generated when at least l sources in a quantum network distribute classical physical systems. Such notions are regarded to be beyond the standard quantum network nonlocality (QNN), which can only guarantee that there is one non-classical source in this quantum network. Up to now, the topic of FQNN and l-QNN has been established for star and chain networks in [A. Pozas-Kerstjens et al. Phys. Rev. Lett. 128, 010403 (2022)] and [M. X. Luo et al. Arxiv. 2306.15717 quant-ph Jan. 2024]. In the paper, we focus on the case of more complex-structure general networks. We first establish the Bell-type inequalities for verifying l-QNN in acyclic and cyclic networks respectively. Furthermore, some cases of general networks are also discussed. For instance, the well-known Butterfly networks.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140709017","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Crystal Growth, Magnetic and Electrical Transport Properties of the Kagome Magnet RCr6Ge6 (R = Gd - Tm) 鹿目磁体 RCr6Ge6（R = Gd - Tm）的晶体生长、磁性和电传输特性
IF 1.7 4区 物理与天体物理
Chinese Physics B Pub Date : 2024-04-12 DOI: 10.1088/1674-1056/ad3dcf
Xingyu Yang, Qingqi Zeng, Miao He, Xitong Xu, Haifeng Du, Z. Qu
{"title":"Crystal Growth, Magnetic and Electrical Transport Properties of the Kagome Magnet RCr6Ge6 (R = Gd - Tm)","authors":"Xingyu Yang, Qingqi Zeng, Miao He, Xitong Xu, Haifeng Du, Z. Qu","doi":"10.1088/1674-1056/ad3dcf","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3dcf","url":null,"abstract":"\u0000 Kagome magnets have attracted considerable research attentions due to the interplay between topology, magnetism and electronic correlations. In this study, we report single crystal synthesis of a series of the kagome magnets RCr6Ge6 (R = Gd - Tm) which possess defect-free Cr kagome lattices, and systematically study their magnetic and electrical transport properties. The transition from canted ferrimagnetic to paramagnetic state in GdCr6Ge6, TbCr6Ge6, DyCr6Ge6, HoCr6Ge6, ErCr6Ge6, and TmCr6Ge6 occurs at 11.3 K, 10.8 K, 4.3 K, 2.5 K, 3.3 K, and below 2 K, respectively, due to R-R interactions within the compounds. Magnetization measurements reveal highly anisotropic magnetism with canted magnetic moments in these compounds. In the electrical transport, both negative and positive magnetoresistance at different magnetic field and temperature have been observed due to the competition between different scattering mechanisms. Our work enriches understandings on the Cr-based kagome magnets and paves way for searching possible topological responses in this family.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140709562","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Relationship between disorder, magnetism and band topology in Mn(Sb1-x Bi x )2Te4 single crystals 锰（Sb1-x Bi x ）2Te4 单晶中的无序性、磁性和带拓扑之间的关系
IF 1.7 4区 物理与天体物理
Chinese Physics B Pub Date : 2024-04-12 DOI: 10.1088/1674-1056/ad3dd8
Ming Xi, Hechang Lei
{"title":"Relationship between disorder, magnetism and band topology in Mn(Sb1-x\u0000 Bi\u0000 x\u0000 )2Te4 single crystals","authors":"Ming Xi, Hechang Lei","doi":"10.1088/1674-1056/ad3dd8","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3dd8","url":null,"abstract":"\u0000 We investigate the evolution of magnetic properties as well as the content and distribution of Mn for Mn(Sb1-x\u0000 Bi\u0000 x\u0000 )2Te4 single crystals grown by large-temperature-gradient chemical vapor transport method. It is found that the ferromagnetic MnSb2Te4 changes to antiferromagnetism with Bi doping when x ≥ 0.25. Further analysis implies that the occupations of Mn ions at Sb/Bi site MnSb/Bi and Mn site MnMn have a strong influence on the magnetic ground state of these systems. With the decrease of MnMn and increase of MnSb/Bi, the system will favor the ferromagnetic ground state. In addition, the rapid decrease of T\u0000 C/N with increasing Bi content when x ≤ 0.25 and the insensitivity of T\u0000 N to x when x > 0.25 suggest that the main magnetic interaction may change from the Ruderman-Kittel-Kasuya-Yosida-type at low Bi doping region to the van-Vleck-type in high Bi doped samples.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140709208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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
Mutation in a Non-Force-Bearing Region of Protein L Influences Force-Dependent Unfolding Behavior 蛋白质 L 非受力区的突变影响了受力折叠行为
IF 1.7 4区 物理与天体物理
Chinese Physics B Pub Date : 2024-04-12 DOI: 10.1088/1674-1056/ad3dcd
Huanjie Jiang, Yanwei Wang, Jiayuan Chen, Dan Hu, Hai Pan, Zilong Guo, Hu Chen
{"title":"Mutation in a Non-Force-Bearing Region of Protein L Influences Force-Dependent Unfolding Behavior","authors":"Huanjie Jiang, Yanwei Wang, Jiayuan Chen, Dan Hu, Hai Pan, Zilong Guo, Hu Chen","doi":"10.1088/1674-1056/ad3dcd","DOIUrl":"https://doi.org/10.1088/1674-1056/ad3dcd","url":null,"abstract":"\u0000 Single-molecule magnetic tweezers (MT) have revealed multiple transition barriers along the unfolding pathway of several two-state proteins, such as GB1 and Csp. In this study, we utilized MT to measure the force-dependent folding and unfolding rates of both the Protein L (PLWT) and its Y47W mutant (PLY47W) where the mutation point is not at the force-bearing β-strands. The measurements were conducted within a force range of 3 to 120 pN. Notably, the unfolding rates of both PLWT and PWY47W exhibit distinct force sensitivities below 50 pN and above 60 pN, implying a two-barrier free energy landscape. Both PLWT and PLY47W share the same force-dependent folding rate and the same transition barriers, but the unfolding rate of PLY47W is faster than PLWT. Our finding demonstrates that the residue outside of the force-bearing region will also affect the force-induced unfolding dynamics.","PeriodicalId":10253,"journal":{"name":"Chinese Physics B","volume":null,"pages":null},"PeriodicalIF":1.7,"publicationDate":"2024-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140709670","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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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