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Type: Artigo de periódico
Title: Josephson Coupling Between Superconducting Clusters In High-tc Materials
Author: De Lima O.F.
Awana V.P.S.
Ribeiro R.A.
Avila M.A.
Abstract: Diamagnetic moment for Bi2Sr2CaCu2O 8+δ (Bi:2212) and YBa2Cu3O 7-δ- (Y:123) crystals were measured at different fields H and temperatures. For the higher fields two distinct transition temperatures T g and TJ are identified, with Tg > T J. By increasing H the line Tg(H) shifts very slowly while TJ(H) shifts much faster to lower temperatures, displaying an upward curvature well described by a theory based on Josephson coupling between superconducting clusters. Here, we show data mainly for the Bi:2212 crystals, where sample dependent TJ(H) lines are clearly observed. © 2001 Elsevier Science B.V. All rights reserved.
Rights: fechado
Identifier DOI: 
Date Issue: 2001
Appears in Collections:Unicamp - Artigos e Outros Documentos

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