Stacked tunneling and stepped grain boundary Josephson junction

Details Stacked tunneling and stepped grain boundary Josephson junction Stacked tunneling and stepped grain boundary Josephson junction

1996-08-16

1998-02-24

Saadat, Mahshid D.

Superconductor technology: apparatus, material, process

High temperature devices, systems, apparatus, com- ponents,...

Superconductor next to two or more nonsuperconductive layers

505190, 505234, 505238, 505329, 505702, 257 31, 257 34, H01L 3906, H01L 3908, H01L 3914, H01L 3922

Patent

active

057211965

ABSTRACT:
A Josephson junction device comprises a single crystalline substrate including a principal surface, an oxide layer formed on the principal surface of the substrate having a step on its surface and an oxide superconductor thin film formed on the surface of the oxide layer. The oxide superconductor thin film includes a first and a second portions respectively positioned above and below the step of the oxide layer, which are constituted of single crystals of the oxide superconductor, and a step-edge junction made up of a grain boundary on the step of the oxide layer, which constitutes a weak link of the Josephson junction.

REFERENCES:
patent: 5106823 (1992-04-01), Creuzet et al.
Bourne et al., "High-Temperature Superconducting Josephson Mixers From Deliberate Gram Boundares in Tl.sub.2 CaBa.sub.2 Cu .sub.2 0.sub.8 ", SPIE vol. 1477 Superconductivity Applications for Infrared and Microwave Devices, 1991, pp. 205-208.

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