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典型文献
Finite superconducting square wire-network based on two-dimensional crystalline Mo2C
文献摘要:
Superconducting wire-networks are paradigms to study Cooper pairing issues,vortex dynamics and arrangements.Recently,emergent low-dimensional crystalline superconductors were reported in the minimal-disorder limit,providing novel platforms to reveal vortices-related physics.Study on superconducting loops with high-crystallinity is thus currently demanded.Here,we report fabrication and transport measurement of finite square-network based on two-dimensional crystalline superconductor Mo2C.We observe oscillations in the resistance as a function of the magnetic flux through the loops.Resistance dips at both matching field and fractional fillings are revealed.Temperature and current evolutions are carried out in magnetoresistance to study vortex dynamics.The amplitude of oscillation is enhanced due to the interaction between thermally activated vortices and the currents induced in the loops.The driving current reduces the effective activation energy for vortex,giving rise to stronger vortex interaction.Moreover,by the thermally activated vortex creep model,we derive the effective potential barrier for vortex dissipation,which shows well-defined correspondence with structures in magnetoresistance.Our work shows that low-dimensional crystalline superconducting network based on Mo2C possesses pronounced potential in studying the modulation of vortex arrangements and dynamics,paving the way for further investigations on crystalline superconducting network with various configurations.
文献关键词:
作者姓名:
Zhen Liu;Zi-Xuan Yang;Chuan Xu;Jia-Ji Zhao;Lu-Junyu Wang;Yun-Qi Fu;Xue-Lei Liang;Hui-Ming Cheng;Wen-Cai Ren;Xiao-Song Wu;Ning Kang
作者机构:
Key Laboratory for the Physics and Chemistry of Nanodevices,School of Electronics and Center for Carbon-Based Electronics,Peking University,Beijing 100871,China;Shenyang National Laboratory for Materials Science,Institute of Metal Research,Chinese Academy of Sciences,Shenyang 110016,China;State Key Laboratory for Artificial Microstructure and Mesoscopic Physics,Frontiers Science Center for Nano-optoelectronics,Peking University,Beijing 100871,China;School of Materials Science and Engineering,University of Science and Technology of China,Shenyang 110016,China
引用格式:
[1]Zhen Liu;Zi-Xuan Yang;Chuan Xu;Jia-Ji Zhao;Lu-Junyu Wang;Yun-Qi Fu;Xue-Lei Liang;Hui-Ming Cheng;Wen-Cai Ren;Xiao-Song Wu;Ning Kang-.Finite superconducting square wire-network based on two-dimensional crystalline Mo2C)[J].中国物理B(英文版),2022(09):146-152
A类:
B类:
Finite,superconducting,square,wire,dimensional,crystalline,Mo2C,Superconducting,networks,paradigms,Cooper,pairing,issues,vortex,dynamics,arrangements,Recently,emergent,low,superconductors,were,reported,minimal,disorder,limit,providing,novel,platforms,vortices,related,physics,Study,loops,high,crystallinity,thus,currently,demanded,Here,fabrication,transport,measurement,finite,We,observe,oscillations,function,magnetic,flux,through,Resistance,dips,both,matching,field,fractional,fillings,revealed,Temperature,evolutions,carried,out,magnetoresistance,amplitude,enhanced,due,interaction,between,thermally,activated,currents,induced,driving,reduces,effective,activation,energy,giving,rise,stronger,Moreover,by,creep,model,derive,potential,barrier,dissipation,which,shows,well,defined,correspondence,structures,Our,that,possesses,pronounced,studying,modulation,paving,way,further,investigations,various,configurations
AB值:
0.571429
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