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Thermodynamic fluctuations in Bi (Pb)-Sr-Ca-Cu-O single phase high Tc films

✍ Scribed by A. Marino; C.H. Sanchez. M; L. Rinderer

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
135 KB
Volume
194-196
Category
Article
ISSN
0921-4526

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✦ Synopsis

We report measurements of the excess conductivity above Tc for superconducting thin films of single phase (Bio.8Pbo.2)2Sr2Ca2Cu3OlO+y. The experimental excess conductivity was determined from both the normal metal and the Anderson-Zou fits to the normal state resistivity. By using the Aslamazov-Larkin Theory a value of the critical exponent ~L = 1.0 has been obtained in both cases, which indicates the two-dimensional nature of the superconductivity in these films.

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Department o f P h y s i c s , Osniania U n i v e r s i t y , Hyderabad, and Department o f Physics, P.G. Cent.re, G o d a v a r i k h a n i , Uarimnagar, I n d i a High-Tc Phase i n t h e Bi-kl-Pb-Sr-Ca-Cu-0 Superconduct ins System 1. I n t r o d u c t i o n S i n c e t h e d i s c o v e r y o f a