Vortex-lattice melting in HgBa sub(2)CaCu sub(2)O sub(6+ delta ): Changes in dimensionality

The irreversibility line (IL) of magnetically grain-aligned samples of HgBa sub(2)CaCu sub(2)O sub(6+ delta ) was determined from magnetization measurements with the magnetic field, H, parallel to the c-axis. For H < 1 T, the IL is well fitted by a model of three-dimensional flux line lattice mel...

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Published inPhysica. C, Superconductivity Vol. 354; no. 1-4; pp. 294 - 298
Main Authors Andrade R, De, Lanfredi, A J C, Leite, E R, Ortiz, W A
Format Journal Article
LanguageEnglish
Published 01.05.2001
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Summary:The irreversibility line (IL) of magnetically grain-aligned samples of HgBa sub(2)CaCu sub(2)O sub(6+ delta ) was determined from magnetization measurements with the magnetic field, H, parallel to the c-axis. For H < 1 T, the IL is well fitted by a model of three-dimensional flux line lattice melting due to thermal fluctuations. For H > 1 T, the IL behaves quite differently, being properly modeled by the melting of a quasi-two-dimensional lattice. copyright 2001 Elsevier Science B.V.
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ISSN:0921-4534