Development of a Josephson vortex two-state system based on a confocal annular Josephson junction
作者: Roberto MonacoJesper MygindValery P Koshelets
作者单位: 1CNR-ISASI, Institute of Applied Sciences and Intelligent Systems ‘E. Caianello’, Comprensorio Olivetti, I-80078 Pozzuoli, Italy
2DTU Physics, B309, Technical University of Denmark, DK-2800 Lyngby, Denmark
3Kotel’nikov Institute of Radio Engineering and Electronics, Russian Academy of Science, Mokhovaya 11, Bldg 7, 125009 Moscow, Russia
刊名: Superconductor Science and Technology, 2018, Vol.31 (2)
来源数据库: Institute of Physics Journal
DOI: 10.1088/1361-6668/aa9e17
原始语种摘要: We report theoretical and experimental work on the development of a Josephson vortex two-state system based on a confocal annular Josephson tunnel junction (CAJTJ). The key ingredient of this geometrical configuration is a periodically variable width that generates a spatial vortex potential with bistable states. This intrinsic vortex potential can be tuned by an externally applied magnetic field and tilted by a bias current. The two-state system is accurately modeled by a one-dimensional sine-Gordon like equation by means of which one can numerically calculate both the magnetic field needed to set the vortex in a given state as well as the vortex-depinning currents. Experimental data taken at on high-quality Nb/Al–AlOx /Nb CAJTJs with an individual trapped fluxon advocate the presence of...
全文获取路径: IOP  (合作)

  • vortex 涡旋
  • state 状态
  • confocal 共焦
  • system 
  • potential 
  • based 基于
  • junction 连接
  • workable 可耕的
  • externally 外部地
  • annular 环状的