Flux-line-cutting effects at the critical current of cylindrical type-II superconductors

Journal Article · Sat Sep 01 00:00:00 EDT 1990 · Physical Review, B: Condensed Matter; (USA)

DOI:https://doi.org/10.1103/PhysRevB.42.4100· OSTI ID:6479511

Perez-Gonzalez, A ^[1]; Clem, J R ^[2]

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1. Departamento de Fisica del Instituto de Ciencias, Universidad Autonoma de Puebla, Apdo. J-48, Puebla (Mexico)
2. 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), Journal Name: Physical Review, B: Condensed Matter; (USA) Vol. 42:7; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL CURRENT
CURRENTS
CYLINDERS
ELECTRIC CURRENTS
MAGNETIC FIELDS
MAGNETIC FLUX
SUPERCONDUCTORS
TYPE-II SUPERCONDUCTORS