Theory of the double critical state in type-II superconductors

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6659949

Clem, J R; Perez-Gonzalez, A

A double critical-state theory is described by which hysteretic states of a type-II superconductor in an applied magnetic field that varies in both magnitude and direction can be calculated. In this theory, if the magnitude of the electrical current density component perpendicular to the magnetic induction B vector exceeds the corresponding critical value J/sub c perpendicular/, depinning occurs, and an electric field component E/sub perpendicular/ perpendicular to B vector appears; if the magnitude of the current density component parallel to B vector exceeds the corresponding critical value J/sub C parallel/, flux-line cutting occurs, and an electric field component E/sub parallel/ parallel to B vector appears. Solutions of the double critical-state model are presented for a hysteretic type-II superconducting slab subjected to a parallel applied magnetic field that is constant in magnitude but varying in direction.

• Research Organization: Ames Lab., IA (USA); Iowa State Univ. of Science and Technology, Ames (USA). Dept. of Physics
• DOE Contract Number: W-7405-ENG-82
• OSTI ID: 6659949
• Report Number(s): IS-M-497; CONF-840842-25; ON: DE84015461
• Country of Publication: United States
• Language: English

Related Subjects

656102* -- Solid State Physics-- Superconductivity-- Acoustic
Electronic
Magnetic
Optical
& Thermal Phenomena-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CRITICAL CURRENT
CRITICAL FIELD
CURRENT DENSITY
CURRENTS
ELECTRIC CURRENTS
ELECTRIC FIELDS
HYSTERESIS
MAGNETIC FIELDS
SUPERCONDUCTORS
TYPE-II SUPERCONDUCTORS