Critical currents in polycrystalline YBa
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T.R. Finlayson; D.A. Garvie; D.B. Lowe; Z. Przelozny; T.F. Smith
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Article
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1990
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Elsevier Science
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English
⚖ 557 KB
In this paper the critical density for a polycrystalline sample is calculated assuming a model of weakly coupled superconducting grains and the influence of grain size on the maximum tunnelling current is investigated. In addition the Josephson vortices are shown to be bound by the pinning force inh