Longitudinal magnetic field increases critical current in superconducting strip

TL;DR

This paper investigates how applying a longitudinal magnetic field after a perpendicular one can significantly enhance the critical current in a superconducting strip by altering vortex configurations.

Contribution

It introduces a novel analysis of vortex behavior under sequential magnetic fields, revealing a method to increase critical currents in superconducting strips.

Findings

Longitudinal magnetic field enhances critical current.

Vortices become inclined, affecting current flow.

Sequential magnetic field application alters vortex lattice.

Abstract

The critical state of the vortex lattice in a thin strip is considered for the case when first a perpendicular magnetic field is applied, then a longitudinal field, and then again the perpendicular field is increased. This longitudinal field can strongly enhance the critical currents in the strip since the vortices are inclined and the currents flow in the strip plane.