Flux-line-cutting effects at the critical current of cylindrical type-II superconductors
Journal Article
·
· Physical Review, B: Condensed Matter; (USA)
- Departamento de Fisica del Instituto de Ciencias, Universidad Autonoma de Puebla, Apdo. J-48, Puebla (Mexico)
- Ames Laboratory-U.S. Department of Energy, Ames, IA (USA) Department of Physics, Iowa State University, Ames, IA
Our critical-state model, which includes the effects of both flux-line cutting and flux pinning, is applied to a current-carrying cylinder in an axial magnetic field. The time evolution of the internal magnetic-field distribution is computed for currents just slightly above the critical current at which a longitudinal electric field first appears. According to the theory, when an axial magnetic field is nonzero, a unique magnetic-field distribution is ultimately produced. On the other hand, when the axial magnetic field is zero, the final magnetic-field distribution, longitudinal magnetic moment, and critical current all depend upon the sample's magnetic history.
- DOE Contract Number:
- W-7405-ENG-82
- OSTI ID:
- 6479511
- Journal Information:
- Physical Review, B: Condensed Matter; (USA), Vol. 42:7; ISSN 0163-1829
- Country of Publication:
- United States
- Language:
- English
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OSTI ID:6479511