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Please use this identifier to cite or link to this item: http://eprint.iitd.ac.in/handle/2074/2341

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dc.contributor.authorChaudhary, Sujeet-
dc.contributor.authorGogia, Balvinder-
dc.contributor.authorSingh, Kanwal Jeet-
dc.contributor.authorKashyap, S C-
dc.contributor.authorPandya, D K-
dc.contributor.authorChopra, K L-
dc.identifier.citationPhysica C: Superconductivity, 235-240, 2687-2688p.en
dc.description.abstractFluctuation effects and temperature dependance of IV characteristics of c-axis oriented YBCO thin films on STO(100) have been investigated within the context of unbinding of vortex-antivortex pairs in the Kosterlitz-Thouless transition (KT) and Aslamazov-Larkin (AL) model. A critical jump in the nonlinearity parameter, α (V=Iα), is found at the universal value of α = 3. The broadening of the jump in the temperature dependance of α and associated exponential inverse square root temperature dependance of resistivity above Tc indicate quasi bi-dimensional behavior in the YBCO system. The correlation between AL fluctuations and phase fluctuations (KT model) has also been studied.en
dc.format.extent54316 bytes-
dc.subjectYBCO thin filmsen
dc.subjectvortex-antivortex pairsen
dc.subjectkosterlitz-thouless transitionen
dc.subjectquasi bi-dimensionalen
dc.titleKosterlitz-Thouless transition and fluctuation effects in YBa2Cu3O7−x thin filmsen
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