Flux vortex pinning in a simple model system |
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| Authors: | J.R. Appleyard J.E. Evetts A.M. Campbell |
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| Affiliation: | Department of Metallurgy and Materials Science, University of Cambridge, Pembroke Street, Cambridge CB2 3QZ, England |
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| Abstract: | Results of numerical calculations of flux vortex pinning by random one and two dimensional arrays of identical pinning centres are reported. Three different methods for determining the critical state flux gradient are described and the critical state concept is shown to break down for samples smaller than a certain size. |
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