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Comparison of I–V characteristics in a-axis- and c-axis-oriented YBa2Cu3O7−x thin films

✍ Scribed by H Teshima; K Nakao; H Izumi; K Ohata; T Morishita

Publisher
Elsevier Science
Year
1992
Tongue
English
Weight
387 KB
Volume
199
Category
Article
ISSN
0921-4534

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✦ Synopsis

Current-voltage characteristics of a-axis-and c-axis-oriented YBa2Cu3Ov_x thin films at temperatures near the superconducting transition have been investigated, using the Kosteflitz-Thouless transition model. The voltage exhibits a power-law dependence on the current in both films. The exponent a(T) of the c-axis oriented films shows a "universal jump" at the Kosterlitz-Thouless transition temperature, while that of the a-axis-oriented films shows a linear dependence down to a (T) = 1 with increase in temperature.

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Flux creep in c-axis oriented epitaxial
Flux creep in c-axis oriented epitaxial YBa2Cu3O7 thin film
✍ Bai-ru Zhao; Shun-ichi Kuroumaru; Yuuji Horie; Eiji Yanada; Takafumi Aomine; Xia 📂 Article 📅 1991 🏛 Elsevier Science 🌐 English ⚖ 832 KB

A systematic study of the flux creep behavior has been carried out for c-axis oriented epitaxial YBa2Cu307 thin films based on the Anderson and Kim flux creep model. In a wide magnetic field (H) range (0 to 12 T) and temperature (T) range ( 10 to 82 K), the behavior of the critical current density J