2 July 1994 Fabrication and properties of all a-axis oriented YBaCuO-PrBaCuO-YBaCuO Josephson junctions
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Proceedings Volume 2160, Superconductive Devices and Circuits; (1994) https://doi.org/10.1117/12.180988
Event: OE/LASE '94, 1994, Los Angeles, CA, United States
Abstract
YBaCuO-PrBaCuO-YBaCuO a-axis oriented trilayer structures was realized by in-situ ICM (Inverted Cylindrical Magnetron) sputtering method, including a template step. Cross type junctions of micrometer size were patterned with a trilayer SNOP process. Their Josephson and tunneling characteristics have been investigated for various thicknesses of the PrBaCuO barrier (10- 100 nm). The critical current was found proportional to exp(-(alpha) T1/2) (SNS type in the dirty limit) where (alpha) was a constant. Strong and reproducible non-linearities were observed on the I-V curves especially above 10 mV and analyzed in terms of tunneling process. Tunnel barrier and interface models are proposed to explain the low critical current-normal resistance products (0.4 mV at 4.2(Kappa) ) as well as the I-V curves.
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Florence Pourtier, Florence Pourtier, Jean-Claude Villegier, Jean-Claude Villegier, } "Fabrication and properties of all a-axis oriented YBaCuO-PrBaCuO-YBaCuO Josephson junctions", Proc. SPIE 2160, Superconductive Devices and Circuits, (2 July 1994); doi: 10.1117/12.180988; https://doi.org/10.1117/12.180988
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