Large Predicted Self-Field Critical Current Enhancements In Superconducting Strips Using Magnetic Screens

Yu. A. Genenko; A. Usoskin; H. C. Freyhardt

doi:10.1103/PhysRevLett.83.3045

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Large Predicted Self-Field Critical Current Enhancements In Superconducting Strips Using Magnetic Screens

Yu. A. Genenko, A. Usoskin, H. C. Freyhardt

DOI 10.1103/PhysRevLett.83.3045 · Physical Review Letters

T1

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Abstract

A transport current distribution over a wide superconducting sheet is shown to strongly change in the presence of bulk magnetic screens of a soft magnet with a high permeability. Depending on the geometry, the effect may drastically suppress or protect the Meissner state of the sheet through the enhancement or suppression of the edge barrier critical current. The total transport current in the magnetically screened Meissner state is expected to compete with the critical current of the flux-filled sheet only for samples whose critical current is initially essentially controlled by the edge barrier effect.

Source-reported materials — not catalogue approval

Formula	Reported Tc (K)	Pressure (GPa)	Type
YBa2Cu3O7 Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.	77	Pressure not reported	unknown