Anisotropic critical-state model of type-II superconducting slabs

Abstract

We introduce a critical-state model incorporating the anisotropy of flux-line pinning to analyze the critical states developing in an anisotropic biaxial superconducting slab exposed to a uniform perpendicular magnetic field and to two crossed in-plane magnetic fields which are applied successively. The theory is an extension of the anisotropic collective pinning theory developed by Mikitik and Brandt. The anisotropic flux-line pinning enters into the critical states by generating the angular dependence of the critical current density and by deviating the direction of the electric field from the current in the plane perpendicular to the vortex line. We find that an enhanced in-plane anisotropy moderates the gradients of the magnitudes of the magnetic field and the electric field along the slab thickness, however increases the gradients of their rotations.

References in corpus (8)

• Mechanics of Individual, Isolated Vortices in a Cuprate Superconductor
• Behavior of bulk high-temperature superconductors of finite thickness subjected to crossed magnetic fields
• The critical current of YBa2Cu3O7-d Low Angle Grain Boundaries
• General critical states in type-II superconductors
• "Unusual" critical states in type-II superconductors
• Theory of flux cutting and flux transport at the critical current of a type-II superconducting cylindrical wire
• Inversion mechanism for the transport current in type-II superconductors
• Mismatch of conductivity anisotropy in the mixed and normal states of type-II superconductors

Cited by in corpus (1)

• Scaling laws for the critical current density in anisotropic biaxial superconductors