Controlled preparation of all high-Tc SNS-type edge junctions and DC SQUIDs

Gao, J. and Aarnink, W.A.M. and Gerritsma, G.J. and Rogalla, H. (1990) Controlled preparation of all high-Tc SNS-type edge junctions and DC SQUIDs. Physica C: Superconductivity, 171 (1-2). pp. 126-130. ISSN 0921-4534

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Abstract:	High-Tc SNS-type Josephson junctions and DC SQUIDs were successfully fabricated using hetero-epitaxially grown multilayers of YBa2Cu3Ox and PrBa2Cu3Ox. These layers are c-axis oriented and hence edges of the multilayers give rise to a current flow in the ab-plane between the electrodes of a Josephson junction. The necessary structuring was done by Ar ion beam etching. The individual junctions exhibit a supercurrent up to 80 K. The IcRn-product of these junctions usually has a lower limit of 8 mV at 4.2 K. Voltage modulation of the first DC SQUIDs can be observed up to 66 K. Details on the fabrication and measurements are presented.
Item Type:	Article
Copyright:	© 1990 Elsevier
Faculty:	Science and Technology (TNW)
Research Group:	Low Temperatures - Biomagnetism (LT)
Link to this item:	http://purl.utwente.nl/publications/72883
Official URL:	http://dx.doi.org/10.1016/0921-4534(90)90464-P
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