Chinese Physics B最新文献_第8页

Frequency combs based on magnon-skyrmion interaction in magnetic nanotubes 基于磁性纳米管中磁子与天电离子相互作用的频率梳

Chinese Physics B Pub Date : 2024-05-24 DOI: 10.1088/1674-1056/ad4ff5

jjani Abdulrazak, Xuejuan Liu, Zhejunyu Jin, Yunshan Cao, Peng Yan

引用次数: 0

Twofold symmetry of the in-plane resistance in kagome superconductor Cs(V1-x Ta x )3Sb5 with enhanced superconductivity 具有增强超导性的可果美超导体 Cs(V1-x Ta x )3Sb5 中平面电阻的两重对称性

Chinese Physics B Pub Date : 2024-05-24 DOI: 10.1088/1674-1056/ad4ffa

Zhen Zhao, Ruwen Wang, Yuhang Zhang, Ke Zhu, Weiqi Yu, Yechao Han, Jiali Liu, Guojing Hu, Hui Guo, Xiao Lin, Xiaoli Dong, Hui Chen, Haitao Yang, Hong-Jun Gao

{"title":"Twofold symmetry of the in-plane resistance in kagome superconductor Cs(V1-x\u0000 Ta\u0000 x\u0000 )3Sb5 with enhanced superconductivity","authors":"Zhen Zhao, Ruwen Wang, Yuhang Zhang, Ke Zhu, Weiqi Yu, Yechao Han, Jiali Liu, Guojing Hu, Hui Guo, Xiao Lin, Xiaoli Dong, Hui Chen, Haitao Yang, Hong-Jun Gao","doi":"10.1088/1674-1056/ad4ffa","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4ffa","url":null,"abstract":"\u0000 The kagome superconductor CsV3Sb5 has attracted widespread attention due to its rich correlated electron states including superconductivity, charge density wave (CDW), nematicity, and pair density wave. Notably, the modulation of the intertwined electron orders by the chemical doping is significant to illuminate the cooperation/competition between multiple phases in kagome superconductors. In this study, we have synthesized a series of tantalum-substituted Cs(V1-x\u0000 Ta\u0000 x\u0000 )3Sb5 by a modified self-flux method. Electrical transport measurements reveal that CDW is suppressed gradually and becomes undetectable as the doping content of x over 0.07. Concurrently, the superconductivity is enhanced monotonically from T\u0000 c ~ 2.8 K at x = 0.00 to 5.2 K at x = 0.12. Intriguingly, in the absence of CDW, Cs(V1-x\u0000 Ta\u0000 x\u0000 )3Sb5 (x = 0.12) crystals exhibit a pronounced twofold symmetry of the in-plane angular-dependent magnetoresistance (AMR) in the superconducting state, indicating the anisotropic superconducting properties in the Cs(V1-x\u0000 Ta\u0000 x\u0000 )3Sb5. Our findings demonstrate that Cs(V1-x\u0000 Ta\u0000 x\u0000 )3Sb5 with the non-trivial band topology is an excellent platform to explore the superconductivity mechanism and intertwined electronic orders in quantum materials.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"10 30","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141098809","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}

引用次数: 0

Three-dimensional crystal defect imaging by STEM depth sectioning 通过 STEM 深度切片进行三维晶体缺陷成像

Chinese Physics B Pub Date : 2024-05-24 DOI: 10.1088/1674-1056/ad4ff9

R. Ishikawa, Naoya Shibata, Y. Ikuhara

引用次数: 0

Mode coupling with Fabry-Perot modes in photonic crystal slabs 光子晶体板中与法布里-珀罗模式的模式耦合

Chinese Physics B Pub Date : 2024-05-24 DOI: 10.1088/1674-1056/ad4ff8

Ken Qin, Peng Hu, Jie Liu, Hong Xiang, De-Zhuan Han

引用次数: 0

Phase diagram and quench dynamics of a periodically driven Haldane model 周期性驱动的霍尔丹模型的相图和淬火动力学

Chinese Physics B Pub Date : 2024-05-22 DOI: 10.1088/1674-1056/ad4eb3

Minxuan Ren, Han Yang, Mingyuan Sun

{"title":"Phase diagram and quench dynamics of a periodically driven Haldane model","authors":"Minxuan Ren, Han Yang, Mingyuan Sun","doi":"10.1088/1674-1056/ad4eb3","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4eb3","url":null,"abstract":"\u0000 We investigate a periodically driven Haldane model subjected to a two-stage driving scheme in the form of a step function. By using the Floquet theory, we obtain the topological phase diagram of the system. We also find that anomalous Floquet topological phases exist in the system. Focusing on examining the quench dynamics among topological phases, we analyze the site distribution of the (0)-mode and (pi)-mode edge states in long-period evolution after a quench. The results demonstrate that, under certain conditions, the site distribution of the (0)-mode can be confined at the edge even in long-period evolution. Additionally, both the (0)-mode and (pi)-mode can recover and become confined at the edge in long-period evolution when the post-quench parameters (left( T,frac{M_2}{M_1} right) ) in the phase diagram cross away from the phase boundary (frac{M_2}{M_1}=frac{6sqrt{3} t_2}{M_1}-1). Furthermore, we conclude that whether the edge state is confined at the edge in the long-period evolution after a quench depends on the similarity of the edge states before and after the quench. Our findings reveal some new characteristics of quench dynamics in periodically driven system.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"7 10","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141112171","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}

引用次数: 0

Corrigenda to “Numerical studies of atomic three-step photoionization processes with non-monochromatic laser fields” 对 "非单色激光场下原子三步光离子化过程的数值研究 "的更正

Chinese Physics B Pub Date : 2024-05-20 DOI: 10.1088/1674-1056/ad4d66

Xiaoyong Lu, Lide Wang, Yunfei Li

引用次数: 0

Coevolution of superconductivity and Hall coefficient with anisotropic lattice shrinkage in compressed KCa2Fe4As4F2 压缩 KCa2Fe4As4F2 中超导性和霍尔系数随各向异性晶格收缩的共同演化

Chinese Physics B Pub Date : 2024-05-20 DOI: 10.1088/1674-1056/ad4d65

Jinyu Han, Wenshan Hong, Shu Cai, Jinyu Zhao, Jing Guo, Yazhou Zhou, Pengyu Wang, Lixin Cao, Huiqian Luo, Siliang Li, Qi Wu, Liling Sun

{"title":"Coevolution of superconductivity and Hall coefficient with anisotropic lattice shrinkage in compressed KCa2Fe4As4F2","authors":"Jinyu Han, Wenshan Hong, Shu Cai, Jinyu Zhao, Jing Guo, Yazhou Zhou, Pengyu Wang, Lixin Cao, Huiqian Luo, Siliang Li, Qi Wu, Liling Sun","doi":"10.1088/1674-1056/ad4d65","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4d65","url":null,"abstract":"\u0000 It is well known that the stability of superconductivity in superconductors is widely recognized to be determined by various factors, including charge, spin, orbit, lattice, and other related degrees of freedom. Here, we report our findings on the pressure-induced coevolution of superconductivity and Hall coefficient in KCa2Fe4As4F2, an iron-based superconductor possessing a hybrid crystal structure combining KFe2As2 and CaFeAsF. Our investigation, involving high-pressure resistance, Hall effect and X-ray diffraction (XRD) measurements, allows us to observe the connection of the superconductivity and Hall coefficient with the anisotropic lattice shrinkage. We find that its ambient-pressure tetragonal (T) phase presents a collapse staring at around 18 GPa, where the sign of the Hall coefficient (R\u0000 \u0000 H\u0000 ) changes from positive to negative. Upon further compression, both superconducting transition temperature (Tc) and R\u0000 \u0000 H\u0000 exhibit a monotonous decrease. At around 41 GPa, the superconductivity is completely suppressed (T\u0000 \u0000 c\u0000 =0), where the parameter a begins to decline again and the Hall coefficient remain nearly unchanged. Our experiment results clearly demonstrate that the pressure-induced anisotropic lattice collapse plays a curial role in tuning the interplay among multiple degrees of freedom in the superconducting system and, correspondingly, the stability of the superconductivity.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"39 9","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141122180","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}

引用次数: 0

Half-integer Shapiro Steps in MgB2 Focused He Ion Beam Josephson Junctions MgB2 聚焦氦离子束约瑟夫森结中的半整数夏皮罗阶跃

Chinese Physics B Pub Date : 2024-05-20 DOI: 10.1088/1674-1056/ad4d62

D. Yin, Xinwei Cai, Tiequan Xu, Ruining Sun, Ying Han, Yan Zhang, Yue Wang, Zizhao Gan

{"title":"Half-integer Shapiro Steps in MgB2 Focused He Ion Beam Josephson Junctions","authors":"D. Yin, Xinwei Cai, Tiequan Xu, Ruining Sun, Ying Han, Yan Zhang, Yue Wang, Zizhao Gan","doi":"10.1088/1674-1056/ad4d62","DOIUrl":"https://doi.org/10.1088/1674-1056/ad4d62","url":null,"abstract":"\u0000 Half-integer microwave induced steps (Shapiro steps) have been observed in many different Josephson Junction systems which have attracted a lot of intention because they signify the deviation of current phase relation (CPR) and uncover many unconventional physical properties. In this article, we first report the discovery of half-integer Shapiro steps in MgB2 Focused He Ion Beam (He-FIB) Josephson Junctions. The half-integer steps’ dependence on microwave frequency, temperature, microwave power and magnetic field is also analysed. We find that the existence of half-integer steps can be controlled by magnetic field periodically which is similar with that of high temperature superconductors (HTS) grain boundary junctions and the similarity of the microstructures between gain boundary junctions and He-FIB junctions is discussed. As a consequence, we mainly attribute the physical origin of half-integer steps in MgB2 He-FIB junctions to the model that a He-FIB junction is analogous to a parallel junctions’ array. Our results show that He-FIB technology is a promising platform for researching CPR in junctions made of different superconductors.","PeriodicalId":504421,"journal":{"name":"Chinese Physics B","volume":"66 6","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141123483","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}

引用次数: 0

Multi-soliton solutions of coupled Lakshmanan-Porsezian-Daniel equations with variable coefficients under nonzero boundary conditions 非零边界条件下具有可变系数的拉克什曼-波尔齐安-丹尼尔耦合方程的多孑L解

Chinese Physics B Pub Date : 2024-05-20 DOI: 10.1088/1674-1056/ad4d64

Hui-Chao Zhao, Lei-Nuo Ma, Xi-Yang Xie

引用次数: 0

Observation of parabolic electron bands on superconductor LaRu2As2 观测超导体 LaRu2As2 上的抛物线电子带

Chinese Physics B Pub Date : 2024-05-20 DOI: 10.1088/1674-1056/ad4d63

Xingtai Zhou, Geng Li, Lulu Pan, Zichao Chen, Meng Li, Yanhao Shi, Haitao Yang, Hong-Jun Gao

引用次数: 0