Weak links and dc SQUIDS on artificial nonsymmetric grain boundaries in YBa2Cu3O7-δ

Ivanov, Z.G., Nilsson, P.Å, Winkler, D., Alarco, J.A., Claeson, T., Stepantsov, E.A., & Tzalenchuk, A.Ya (1991) Weak links and dc SQUIDS on artificial nonsymmetric grain boundaries in YBa2Cu3O7-δ. Applied Physics Letters, 59(23), pp. 3030-3032.

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Abstract

We have studied weak links and dc-SQUIDs made from pulsed laser deposited YBa2Cu3O7-δ thin films on Y-ZrO 2 bicrystal substrates. The transport properties of the weak links were studied as a function of the misorientation angle (θ) between the two halves of the bicrystal and an exponential dependence of the weak link critical current density was observed for angles up to 40°at 77 K. Josephson effects with clear microwave and magnetic field responses were observed. An optimum dc-SQUID performance at 77 K was obtained for θ=32°. At this temperature, we achieved a periodic magnetic field response with a modulation depth of 12 μV.

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ID Code: 64044
Item Type: Journal Article
Refereed: Yes
Additional Information: Cited By (since 1996):134
Export Date: 5 November 2013
Source: Scopus
Language of Original Document: English
Correspondence Address: Ivanov, Z.G.; Department of Physics, Chalmers University of Technology, S-412 96 Göteborg, Sweden
Additional URLs:
DOI: 10.1063/1.105783
ISSN: 0003-6951
Divisions: Current > Institutes > Institute for Future Environments
Current > QUT Faculties and Divisions > Science & Engineering Faculty
Deposited On: 07 Nov 2013 00:44
Last Modified: 07 Nov 2013 00:44

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