Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/101277
Type: Artigo de periódico
Title: Thermomagnetic Flux-jump Instabilities And Second Magnetization Peak In Bi2sr2cacu2o8 High-tc Superconducting Crystals
Author: Kopelevich Y.
Moehlecke S.
Torres J.H.S.
Da Silva R.R.
Esquinazi P.
Abstract: Measurements of the magnetization hysteresis loop performed on Bi2Sr2CaCu2O8 high-Tc superconducting single crystals reveal the occurrence of pronounced jumps of the irreversible magnetization at T > 40 K. In this work we demonstrate their thermomagnetic origin. It is also shown that the low-field hollow in the magnetization hysteresis loops measured at T < 40 K and leading to the so-called "second magnetization peak," is the manifestation of a thermomagnetic instability effect. It is suggested that the plastic vortex motion triggers the magnetic instabilities.
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Rights: fechado
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Address: http://www.scopus.com/inward/record.url?eid=2-s2.0-0032689382&partnerID=40&md5=844533e0c45ceb4ad3ab2116a1d35df1
Date Issue: 1999
Appears in Collections:Unicamp - Artigos e Outros Documentos

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