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

Thin-film Josephson junctions with normal metal barriers using a Bi-based high Tc oxide superconductor were successfully fabricated. Bi2Sr2Ca1Cu2Ox films were used for both superconducting electrodes and Bi2Sr2Cu1Oy for the barrier layer. The junction area of 20×40 μm2 was defined by photolithograph...

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Veröffentlicht in:	Applied physics letters 1990-04, Vol.56 (15), p.1469-1471
Hauptverfasser:	MIZUNO, K, HIGASHINO, K, SETSUNE, K, WASA, K
Format:	Artikel
Sprache:	eng
Schlagworte:	ALKALINE EARTH METAL COMPOUNDS BISMUTH COMPOUNDS BISMUTH OXIDES CALCIUM COMPOUNDS CALCIUM OXIDES CHALCOGENIDES CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY Condensed matter: electronic structure, electrical, magnetic, and optical properties COPPER COMPOUNDS COPPER OXIDES ELECTROMAGNETIC RADIATION Exact sciences and technology FABRICATION JOSEPHSON JUNCTIONS JUNCTIONS MACHINING MILLING OXIDES OXYGEN COMPOUNDS Physics Proximity effects, weak links, tunneling phenomena, and josephson effects, adreev effect, sn and sns junctions RADIATIONS RADIOWAVE RADIATION STRONTIUM COMPOUNDS STRONTIUM OXIDES SUPERCONDUCTING FILMS SUPERCONDUCTING JUNCTIONS Superconductivity TRANSITION ELEMENT COMPOUNDS 426001 > Engineering-- Superconducting Devices & Circuits-- (1990-)
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Zusammenfassung:	Thin-film Josephson junctions with normal metal barriers using a Bi-based high Tc oxide superconductor were successfully fabricated. Bi2Sr2Ca1Cu2Ox films were used for both superconducting electrodes and Bi2Sr2Cu1Oy for the barrier layer. The junction area of 20×40 μm2 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.
ISSN:	0003-6951 1077-3118
DOI:	10.1063/1.103173