Physica C-superconductivity and Its Applications最新文献_第5页

Electron–phonon coupling in Mott insulators 莫特绝缘体中的电子-声子耦合

IF 1.3 3区物理与天体物理

Physica C-superconductivity and Its Applications Pub Date : 2025-01-23 DOI: 10.1016/j.physc.2025.1354657

Naoto Nagaosa

引用次数: 0

Design and analysis of a novel high TC-superconducting coupling for high torque transmission and speed regulation: A Comparative study with slotted eddy current coupling 用于大转矩传动和调速的新型高tc -超导联轴器的设计与分析：与开槽涡流联轴器的比较研究

IF 1.3 3区物理与天体物理

Physica C-superconductivity and Its Applications Pub Date : 2025-01-21 DOI: 10.1016/j.physc.2024.1354642

Boris Joel Kenne Telezing, Jinxing Liu

{"title":"Design and analysis of a novel high TC-superconducting coupling for high torque transmission and speed regulation: A Comparative study with slotted eddy current coupling","authors":"Boris Joel Kenne Telezing, Jinxing Liu","doi":"10.1016/j.physc.2024.1354642","DOIUrl":"10.1016/j.physc.2024.1354642","url":null,"abstract":"<div><div>The purpose of this study is to provide a comprehensive description of the design and analysis of a novel hybrid superconducting coupling with axial-flux. The coupling is meant to improve output torque and function efficiently at both low and high speeds. Through the use of the magnetic circuit equivalent model, the torque characteristics of the coupling are analyzed, and the stability of the coupling is investigated at both low and high speeds. In this paper, a novel MEC model is established for the purpose of computing torque and magnetic field properties. Additionally, the paper demonstrates that the coupling has the potential to regulate speed in four different ways. The Novel High Critical Temperature Superconducting Magnetic Coupling (NHSC) has been shown to provide more torque than the Slotted Eddy Current Coupling (SEC), according to a study that was undertaken to compare the two. The gap between the two couplings grows as the thickness of the air gap increases. Through this research, the transmission capabilities of the NHSC have been demonstrated, and its effectiveness in speed regulation has been validated. A wide variety of applications can benefit from the production of high-performance superconducting couplings, which can be improved thanks to the useful insights provided by this research.</div></div>","PeriodicalId":20159,"journal":{"name":"Physica C-superconductivity and Its Applications","volume":"629 ","pages":"Article 1354642"},"PeriodicalIF":1.3,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182559","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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 possible dominant factors in the mechanical properties of the metallic substrates of various commercial REBCO tapes 影响各种商用 REBCO 胶带金属基材机械性能的可能主要因素

IF 1.3 3区物理与天体物理

Physica C-superconductivity and Its Applications Pub Date : 2025-01-21 DOI: 10.1016/j.physc.2024.1354643

Yan Liu , Hongli Suo , Zili Zhang , Yaotang Ji , Lei Wang , Jianhua Liu , Qiuliang Wang

{"title":"The possible dominant factors in the mechanical properties of the metallic substrates of various commercial REBCO tapes","authors":"Yan Liu , Hongli Suo , Zili Zhang , Yaotang Ji , Lei Wang , Jianhua Liu , Qiuliang Wang","doi":"10.1016/j.physc.2024.1354643","DOIUrl":"10.1016/j.physc.2024.1354643","url":null,"abstract":"<div><div>The metallic substrate of commercial REBCO tapes from eight different manufacturers has been systematically investigated. Tensile properties at both room temperature and 77 K were measured. The grain morphology, size, orientation, dislocation density, and internal stress of the grains on both the cross-section and surface of each tape were studied using EBSD. After an in-depth analysis of the relationship between yield strength and grain size, elemental composition, dislocation density, and twin boundaries, it has been preliminarily confirmed that dislocation density is a possible dominant factor in determining the yield strength of the metallic substrate of commercial REBCO tapes.The kernel average misorientation value (KAM) of the cross-section could be one of the best indicators for evaluating yield strength. Based on this analysis, potential methods for enhancing yield strength are also briefly discussed. This investigation aims to provide valuable insights for researchers to better understand the mechanical properties of REBCO tape.</div></div>","PeriodicalId":20159,"journal":{"name":"Physica C-superconductivity and Its Applications","volume":"629 ","pages":"Article 1354643"},"PeriodicalIF":1.3,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182561","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Design and test of a canted-cosine-theta superconducting quadrupole magnet for CiADS project CiADS项目中斜余弦超导四极磁体的设计与试验

IF 1.3 3区物理与天体物理

Physica C-superconductivity and Its Applications Pub Date : 2025-01-21 DOI: 10.1016/j.physc.2024.1354646

Yu Liang , Xianjin Ou , Enming Mei , Dongsheng Ni , Luncai Zhou , Zhengnan Han , Yuquan Chen , Wei Wu , Qinggao Yao

{"title":"Design and test of a canted-cosine-theta superconducting quadrupole magnet for CiADS project","authors":"Yu Liang , Xianjin Ou , Enming Mei , Dongsheng Ni , Luncai Zhou , Zhengnan Han , Yuquan Chen , Wei Wu , Qinggao Yao","doi":"10.1016/j.physc.2024.1354646","DOIUrl":"10.1016/j.physc.2024.1354646","url":null,"abstract":"<div><div>For the China Initiative Accelerator Driven System (CiADS) Project, a state-of-the-art Canted-Cosine-Theta (CCT) superconducting quadrupole magnet has been designed to compact the linac. The prototype, with a magnetic field gradient of 40 T/m, is set to eclipse the conventional normal-conducting designs in terms of efficiency and performance. This quadrupole consists of two aluminum alloy formers that produce a high quality quadrupole, with a bore diameter of 60 mm. Ten NbTi wires, insulated with Nylon braid, are wound into the rectangular grooves that are machined by computer numerical control (CNC). The size of grooves is 2 mm wide and 5 mm deep. This paper describes the detailed design based on the CCT concept and reports on the fabrication and coil winding of the magnet prototype. Finally, the magnetic field measurements are carried out within a cryogenic test bath cooled with liquid helium. Due to the resistance of splice joints, the magnet reached 54 % of current margin.</div></div>","PeriodicalId":20159,"journal":{"name":"Physica C-superconductivity and Its Applications","volume":"629 ","pages":"Article 1354646"},"PeriodicalIF":1.3,"publicationDate":"2025-01-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143182560","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Weakly coupled type-II superconductivity in LaCoSi2 single crystal LaCoSi2单晶的弱耦合ii型超导性

IF 1.3 3区物理与天体物理

Physica C-superconductivity and Its Applications Pub Date : 2025-01-21 DOI: 10.1016/j.physc.2025.1354655

F. Ito , N. Kabeya , N. Kimura

引用次数: 0

Normal state Landau–Fermi liquidness of pure and doped Sr2RuO4 superconductor 纯Sr2RuO4超导体和掺杂Sr2RuO4超导体的正常朗道-费米流动性

IF 1.3 3区物理与天体物理

Physica C-superconductivity and Its Applications Pub Date : 2025-01-20 DOI: 10.1016/j.physc.2025.1354651

Luis Craco

{"title":"Normal state Landau–Fermi liquidness of pure and doped Sr2RuO4 superconductor","authors":"Luis Craco","doi":"10.1016/j.physc.2025.1354651","DOIUrl":"10.1016/j.physc.2025.1354651","url":null,"abstract":"<div><div>Based on local density approximation plus dynamical mean-field theory calculations we explore the normal state of pure and doped Sr<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>RuO<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span> superconductor, providing a multiparticle description of intrinsic Landau–Fermi liquidness. Self-energy corrections arising from multi-orbital electron–electron interactions lead to a strongly renormalized electronic state relevant to electron mass enhancement and the emergence of coherent Landau–Fermi liquid quasiparticles at low energies. We shed light on the electronic structure evolution of electron/hole doped Sr<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>RuO<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span> parent compound, showing the orbital-selective electronic state which emerges upon tuning the doping level of Sr<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>RuO<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span> in the vicinity of the van Hove singularities. This work forms an step forward for understanding the manifestation of anisotropic Coulomb interactions and how Landau–Fermi liquidness emerges in the normal state of Sr<span><math><msub><mrow></mrow><mrow><mn>2</mn></mrow></msub></math></span>RuO<span><math><msub><mrow></mrow><mrow><mn>4</mn></mrow></msub></math></span> superconductor.</div></div>","PeriodicalId":20159,"journal":{"name":"Physica C-superconductivity and Its Applications","volume":"630 ","pages":"Article 1354651"},"PeriodicalIF":1.3,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143103659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Controllable preparation and superconducting properties of tantalum films with different orientations 不同取向钽薄膜的可控制备及其超导性能

IF 1.3 3区物理与天体物理

Physica C-superconductivity and Its Applications Pub Date : 2025-01-20 DOI: 10.1016/j.physc.2025.1354652

Yun Fan , Yuchuan Liu , Yixin Liu , Wei Peng , Yu Wu , Gang Mu , Zhi-Rong Lin

{"title":"Controllable preparation and superconducting properties of tantalum films with different orientations","authors":"Yun Fan , Yuchuan Liu , Yixin Liu , Wei Peng , Yu Wu , Gang Mu , Zhi-Rong Lin","doi":"10.1016/j.physc.2025.1354652","DOIUrl":"10.1016/j.physc.2025.1354652","url":null,"abstract":"<div><div>Transmon qubits based on <span><math><mi>α</mi></math></span>-Ta films have been demonstrated to possess long lifetimes, sparking significant interests among researchers in this material. In this study, we systematically investigated the growth conditions of <span><math><mi>α</mi></math></span>-Ta films on sapphire substrates. By controlling the growth temperature and power, we successfully prepared films with two distinct crystal orientations: <span><math><mi>α</mi></math></span>-Ta [110] and <span><math><mi>α</mi></math></span>-Ta [111]. We found that the growth conditions with low power and low temperature, as well as that with high power and high temperature, are conducive to the growth of <span><math><mi>α</mi></math></span>-Ta [110], while the low power combined with high temperature favors the growth of <span><math><mi>α</mi></math></span>-Ta [111]. The critical transition temperature <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span> of the [111]-oriented film increases more gently with the increase of residual resistance ratio (RRR) compared to the [110]-oriented film. Additionally, our result indicates that as the thickness of the <span><math><mi>α</mi></math></span>-Ta [111] film increases, the values of both <span><math><msub><mrow><mi>T</mi></mrow><mrow><mi>c</mi></mrow></msub></math></span> and RRR rise, with the highest RRR value of 24.6. Our results provide important references for the preparation of high-quality <span><math><mi>α</mi></math></span>-Ta thin films.</div></div>","PeriodicalId":20159,"journal":{"name":"Physica C-superconductivity and Its Applications","volume":"630 ","pages":"Article 1354652"},"PeriodicalIF":1.3,"publicationDate":"2025-01-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143103657","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Influence of fluctuant external magnetic field on the lateral unrecoverable distance of HTS bulks 外磁场波动对高温超导体侧向不可恢复距离的影响

IF 1.3 3区物理与天体物理

Physica C-superconductivity and Its Applications Pub Date : 2025-01-16 DOI: 10.1016/j.physc.2025.1354656

Ye Hong, Zhichuan Huang, Jun Zheng, Jiwang Zhang, Zigang Deng

{"title":"Influence of fluctuant external magnetic field on the lateral unrecoverable distance of HTS bulks","authors":"Ye Hong, Zhichuan Huang, Jun Zheng, Jiwang Zhang, Zigang Deng","doi":"10.1016/j.physc.2025.1354656","DOIUrl":"10.1016/j.physc.2025.1354656","url":null,"abstract":"<div><div>High temperature superconducting (HTS) maglev has great potential for high-speed rail transportation due to its non-contact nature, simple structure, and environmental benefits. The lateral stability of the HTS bulk superconductor is crucial for the curve negotiation ability of maglev trains running at high speeds. The HTS bulk can provide guidance for the maglev train without active control due to its unique magnetic flux pinning property. However, when passing through curves, it can deviate from its original position due to centrifugal effects and may not fully return to its original position. This deviation, known as the unrecoverable distance (UD), is closely related to the guidance performance of the maglev system. In this paper, the lateral UD of the HTS bulk is analyzed through lateral round-trip guidance force experiments using a customized HTS maglev dynamic measurement platform (SCML-03) with a circular permanent magnet guideway (PMG). The guidance force under different rotational speeds of the PMG was tested to study the effect of the fluctuation frequency of the external magnetic field. The influence of maximum lateral displacement (MLD), field cooling height (FCH), and working height (WH) on the UD of the HTS bulk are also discussed. The results showed that the rotational speed of the PMG has little effect on the dynamic guidance performance. The UD can be reduced by lowering the FCH and raising the WH appropriately. Additionally, methods should be found to restrain the possible MLD of levitated vehicles. This experimental analysis shows the lateral recoverable performance of the HTS bulk and provides a reference for the future design of the HTS maglev train.</div></div>","PeriodicalId":20159,"journal":{"name":"Physica C-superconductivity and Its Applications","volume":"630 ","pages":"Article 1354656"},"PeriodicalIF":1.3,"publicationDate":"2025-01-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143103658","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"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

Microstructure and superconducting property research of Cu-Mg reinforcing graphene and grain refining MgB2 by carbon-contained substances doping 含碳物质掺杂Cu-Mg增强石墨烯和晶粒细化MgB2的微观结构和超导性能研究

IF 1.3 3区物理与天体物理

Physica C-superconductivity and Its Applications Pub Date : 2025-01-15 DOI: 10.1016/j.physc.2024.1354632

Wenbin Jin , Nan Liu , Fang Cheng , Zongqing Ma , Yongchang Liu , Pingzhan Si , Hongliang Ge

引用次数: 0

Development of a 3 T cryogenic probe station with a 5.5 T superconducting magnet 5.5 T超导磁体3t低温探测站的研制

IF 1.3 3区物理与天体物理

Physica C-superconductivity and Its Applications Pub Date : 2025-01-15 DOI: 10.1016/j.physc.2024.1354631

Donghu Wang , Zhan Zhang , Zuoguang Li , Peng Gao , Pengfei Bai , Rongtian Zhu , Lian Zhang , Guangdong Li , Ze Wu , Chao Zhou

引用次数: 0