Collective pinning of imperfect vortex lattices by material line defects in extreme type-II superconductors

Abstract

The critical current density shown by a superconductor at the extreme type-II limit is predicted to follow an inverse square-root power law with external magnetic field if the vortex lattice is weakly pinned by material line defects. It acquires an additional inverse dependence with thickness along the line direction once pinning of the interstitial vortex lines by material point defects is included. Moderate quantitative agreement with the critical current density shown by second-generation wires of high-temperature superconductors in kG magnetic fields is achieved at liquid-nitrogen temperature.

arXiv comment10 pages, 3 figures, 2 tables. To appear in Physical Review B

References in corpus (8)

• Vortex-glass phases in type-II superconductors
• Angular dependent vortex pinning mechanisms in YBCO coated conductors and thin films
• Resurrection of the Melting Line in the Bose Glass Superconductor
• Absence of Two-Dimensional Bragg Glasses
• First order phase transition from the vortex liquid to an amorphous solid
• Bragg-Bose glass phase in vortex states of high-$T_{\mathrm{c}}$ superconductors with sparse and weak columnar defects
• Domain regime in two-dimensional disordered vortex matter
• Collective pinning of the vortex lattice by columnar defects in layered superconductors

Cited by in corpus (5)

• Elastic systems with correlated disorder: Response to tilt and application to surface growth
• In-Field Critical Current of Type-II Superconductors Caused by Strain from Nano-scale Columnar Inclusions
• Critical Current of Type-II Superconductors in a Broken Bose Glass State
• Comparatively High In-Field Critical Current in Type-II Superconductors from Heterogeneous Columnar Pins: A Molecular Dynamics Study
• Anomalous Nernst Effect in the Vortex-Liquid Phase of High-Temperature Superconductors by Layer Decoupling