English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Tools annual

Global: Zendy Free Plan

Global: Zendy Tools monthly

Global: Zendy Plus monthly

Recent theoretical and experimental research on low-bulk-pinningsuperconducting strips has revealed striking dome-like magnetic-fielddistributions due to geometrical edge barriers. The observed magnetic-fluxprofiles differ strongly from those in strips in which bulk pinning isdominant. In this paper we theoretically describe the current and fielddistributions of a superconducting strip under the combined influence of both ageometrical edge barrier and bulk pinning at the strip's critical current Ic,where a longitudinal voltage first appears. We calculate Ic and find itsdependence upon a perpendicular applied magnetic field Ha. The behavior isgoverned by a parameter p, defined as the ratio of the bulk-pinning criticalcurrent Ip to the geometrical-barrier critical current Is0. We find that when p> 2/pi and Ip is field-independent, Ic vs Ha exhibits a plateau for small Ha,followed by the dependence Ic-Ip ~ 1/Ha in higher magnetic fields.Comment: 4 pages, 2 figures, Fig. 1 revised, submitted to Phys. Rev.

Field-dependent critical current in type-II superconducting strips: Combined effect of bulk pinning and geometrical edge barrier