Josephson element having a NdBa.sub.2 Cu.sub.3 O.sub.7-y superco

Details Josephson element having a NdBa.sub.2 Cu.sub.3 O.sub.7-y superco Josephson element having a NdBa.sub.2 Cu.sub.3 O.sub.7-y superco

1996-05-17

1999-03-02

King, Roy V.

Superconductor technology: apparatus, material, process

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

Josephson junction, per se or josephson junction with only...

505329, 505702, 257 33, 257 34, H01L 3922

Patent

active

058771220

ABSTRACT:
An oxide superconductor element, produced by forming a damaged region on a substrate surface by the Ga.sup.+ focusing ion beam method and then depositing an oxide superconductor thin-film over it, is characterized in that a NdBa.sub.2 Cu.sub.3 O.sub.7-y (0.ltoreq.y.ltoreq.0.5) oxide superconductor is used in a tunnel junction having a tunneling barrier region with weak superconductivity.

REFERENCES:
patent: 5077266 (1991-12-01), Takagi et al.
patent: 5525584 (1996-06-01), Murakami et al.
Ishimaru et al, Int. Workshop Supercond., 426-427 International Superconductivity Technology Center, Toyko, Japan 1995.
Badaye et al, Appl. Phys. lett 66(16) Apr. 1995, pp. 2131-2133.
"Melt Processing for Obtaining NdBa.sub.2 Cu.sub.3 O.sub.y Superconductors with High T.sub.c and Large J.sub.c ", S.I. Yoo et al.; Tokyo, Japan, Published May 17, 1994; Appl. Phys. Lett. 65(5), Aug. 1, 1994, pp. 633-635 .

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