Heterostructure applications of in-plane oriented a-axis YBa/sub 2/Cu/sub 3/O/sub 7-x/ films on LaSrGaO/sub 4

We have fabricated various heterostructures using in-plane oriented a-axis YBa/sub 2/Cu/sub 3/O/sub 7/(-x) and PrBa/sub 2/Cu/sub 3/O/sub 7/(-x) on LaSrGaO/sub 4/ substrates. Superconductor-insulator-superconductor multilayers were fabricated with LaSrGaO/sub 4/ and Nd/sub 2/CuO/sub 4/ as dielectric...

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Bibliographic Details
Published in:IEEE transactions on applied superconductivity 1995-06, Vol.5 (2), p.2365-2368
Main Authors: Takeuchi, I., Trajanovic, Z., Peng, J.L., Li, Z.Y., Mao, S.N., Warburton, P.A., Lobb, C.J., Venkatesan, T.
Format: Article
Language:English
Subjects:
Geometry
Josephson junctions
Laser sintering
Lattices
Pulsed laser deposition
Substrates
Superconducting epitaxial layers
Superconducting films
Temperature
Yttrium barium copper oxide
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Summary:We have fabricated various heterostructures using in-plane oriented a-axis YBa/sub 2/Cu/sub 3/O/sub 7/(-x) and PrBa/sub 2/Cu/sub 3/O/sub 7/(-x) on LaSrGaO/sub 4/ substrates. Superconductor-insulator-superconductor multilayers were fabricated with LaSrGaO/sub 4/ and Nd/sub 2/CuO/sub 4/ as dielectric layers. For such structures with approximately 3000 /spl Aring/ of Nd/sub 2/CuO/sub 4/, both top and bottom layers had T/sub c/ (R=0)/spl ges/85 K. YBa/sub 2/Cu/sub 3/O/sub 7-x//PrBa/sub 2/Cu/sub 3/O/sub 7-x//YBa/sub 2/Cu/sub 3/O/sub 7-x/ ramp-edge junctions were fabricated in the b-direction of the a-axis fame, and an I/sub c/R product of 1 mV was obtained at 4.2 K.< >
ISSN:1051-8223
1558-2515
DOI:10.1109/77.403061