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DC Josephson effect and critical currents of YBa2Cu3O7 and Tl2CaBa2O8

✍ Scribed by R. Kleiner; P. Müller; K. Andres

Publisher
Elsevier Science
Year
1989
Tongue
English
Weight
109 KB
Volume
162-164
Category
Article
ISSN
0921-4534

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✦ Synopsis

The DC Josephson effect between grains in YBa2Cua07 and TI2CaBa2Cu20e sinters was investigated. DC SQUID operation was detected in two geometries up to T = 86 K and T = 101 K respectively. The results are consistent with the assumption that the grain boundaries are S-N-S or S-S'-S junctions and that the transport currents are of pure Josephson type.

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Critical currents in bulk samples of YBa
Critical currents in bulk samples of YBa2Cu3O7−δ and DyBa2Cu3O7−δ
✍ J. Aponte; H. Abache; M. Octavio 📂 Article 📅 1989 🏛 Elsevier Science 🌐 English ⚖ 363 KB

We have performed four probe transport measurements of the critical current in bulk samples of the high-Tc superconductors YBa2Cu307\_~ and DyBa2Cu3074. We found that over a range of temperatures the critical current varies linearly with (T c-T). This result indicates that these ceramics behave as a