Abstract
The critical currents and normal resistances of the small bridges from yttrium-based high-T c superconducting ceramics have been measured. The characteristic voltage of these bridges was found to be approximately 20 μV. This effect can be explained if, between the ceramic grains, there are contacts of an order of one crystalline cell in size.
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References
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The authors are grateful to V. N. Polushkin for his help in this investigation.
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Vasiliev, B.V., Uchaikin, S.V. On the characteristic voltage of high-T c superconductors. J Supercond 4, 243–245 (1991). https://doi.org/10.1007/BF00620793
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DOI: https://doi.org/10.1007/BF00620793