New features in the vortex phase diagram of YBa2Cu3O7- delta

New features in the vortex phase diagram of YBa2Cu3O7- delta

Magnetic and transport measurements have been performed in high quality YBa2Cu3O7- delta single crystals. We demonstrate for the first time that the magnetization peak line in the phase diagram of YBa2Cu3O7- delta , Hp(T) exhibits an impressive similarity with the equivalent line for Bi2Sr2CaCu2O8....

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Bibliographic Details
Main Authors: Deligiannis, K. (Author), de Groot, P.A.J (Author), Oussena, M. (Author), Pinfold, S. (Author), Langan, R. (Author), Gagnon, R. (Author), Taillefer, L. (Author)
Format: Article
Language:English
Published: 1997.
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Summary:Magnetic and transport measurements have been performed in high quality YBa2Cu3O7- delta single crystals. We demonstrate for the first time that the magnetization peak line in the phase diagram of YBa2Cu3O7- delta , Hp(T) exhibits an impressive similarity with the equivalent line for Bi2Sr2CaCu2O8. Our results show not only a similar temperature dependence but also an almost identical response to oxygen doping and a correlation to the multicritical point. At high temperatures we observe a previously unreported splitting of the magnetization peak.

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