Chaudhary, Sujeet ; Gogia, Balvinder ; Singh, Kanwal Jeet ; Kashyap, S. C. ; Pandya, D. K. ; Chopra, K. L. (1994) Kosterlitz-Thouless transition and fluctuation effects in YBa2Cu3O7-x thin films Physica C: Superconductivity and its Applications, 235-240 . pp. 2687-2688. ISSN 0921-4534
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Official URL: http://linkinghub.elsevier.com/retrieve/pii/092145...
Related URL: http://dx.doi.org/10.1016/0921-4534(94)92564-X
Abstract
Fluctuation 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.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to Elsevier Science. |
| ID Code: | 23030 |
| Deposited On: | 25 Nov 2010 13:39 |
| Last Modified: | 28 May 2011 04:31 |
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