Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/102291
Type: Artigo de periódico
Title: Inhomogeneous Superconductivity In Bi2sr2ca1-xprxcu2o8+ δ
Author: Dos Santos C.A.M.
Moehlecke S.
Kopelevich Y.
Machado A.J.S.
Abstract: We have studied Pr doping effect on the superconducting transition temperature onset TC(x) in Bi2Sr2Ca1-xPrxCu2O8+ δ superconducting polycrystalline samples by means of both resistance R(T,x) and magnetization M(T,x) measurements. It is found that while the resistively determined TCR(x) rapidly decreases with x for x > 0.4, the TCM ≈ 85 K obtained from magnetization measurements remains unchanged. We argue that the suppression of TCR(x) is related to the reduction of the sample superconducting volume fraction which ultimately leads to disconnected superconducting clusters. Resistive behavior measured at different applied currents in a sample close to percolation threshold supports this discussion. © 2002 Elsevier Science B.V. All rights reserved.
Editor: 
Rights: fechado
Identifier DOI: 10.1016/S0921-4534(02)02802-2
Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0038558192&partnerID=40&md5=a87dda61ec0159aa36c8f5184dc78777
Date Issue: 2003
Appears in Collections:Unicamp - Artigos e Outros Documentos

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