Fabrication of thin-film-type Josephson junctions using a Bi-Sr-Ca-Cu-O /Bi-Sr-Cu-O/Bi-Sr-Ca-Cu-O structure

Journal Article · Mon Apr 09 00:00:00 EDT 1990 · Applied Physics Letters; (USA)

DOI:https://doi.org/10.1063/1.103173· OSTI ID:6944325

Mizuno, K; Higashino, K; Setsune, K; Wasa, K ^[1]

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1. Central Research Laboratories, Matshushita Electric Industrial Co., Ltd., Moriguchi, Osaka 570, Japan (JP)

Thin-film Josephson junctions with normal metal barriers using a Bi-based high {ital T}{sub {ital c}} oxide superconductor were successfully fabricated. Bi{sub 2}Sr{sub 2}Ca{sub 1}Cu{sub 2}O{sub {ital x}} films were used for both superconducting electrodes and Bi{sub 2}Sr{sub 2}Cu{sub 1}O{sub {ital y}} for the barrier layer. The junction area of 20{times}40 {mu}m{sup 2} was defined by photolithography and Ar ion milling. These S/N/S-type junctions clearly exhibited the ac Josephson effect under the irradiation of radio frequency waves of 12 GHz and more than 20 Shapiro steps were observed.

• OSTI ID: 6944325
• Journal Information: Applied Physics Letters; (USA), Journal Name: Applied Physics Letters; (USA) Vol. 56:15; ISSN APPLA; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ALKALINE EARTH METAL COMPOUNDS
BISMUTH COMPOUNDS
BISMUTH OXIDES
CALCIUM COMPOUNDS
CALCIUM OXIDES
CHALCOGENIDES
COPPER COMPOUNDS
COPPER OXIDES
ELECTROMAGNETIC RADIATION
FABRICATION
FILMS
JOSEPHSON JUNCTIONS
JUNCTIONS
MACHINING
MILLING
OXIDES
OXYGEN COMPOUNDS
RADIATIONS
RADIOWAVE RADIATION
STRONTIUM COMPOUNDS
STRONTIUM OXIDES
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
TRANSITION ELEMENT COMPOUNDS