Observation of the Josephson effect in Nb$sub 3$Ge Dayem bridges

Conference · Sat Mar 01 00:00:00 EDT 1975 · IEEE Trans. Magn., v. MAG-11, no. 2, pp. 880-882

OSTI ID:4094443

Janocko, M A; Gavaler, J R; Jones, C K

Dayem bridge Josephson junctions were successfully fabricated for the first time from sputtered thin films of high-T/sub c/ Nb$sub 3$Ge. Microwave induced current steps were observed in the I-V characteristic of one of these junctions at a frequency of 10 GHz at temperatures between 20.9 and 21.0$sup 0$K. This junction was fabricated by a mechanical scribing technique, instead of sputter etching. Sputter etched junctions also exhibited Josephson steps, but only at much lower temperatures, due to a depression of T/sub c/ by the sputter etching process. (auth)

• Research Organization: Westinghouse Research Labs., Pittsburgh
• NSA Number: NSA-33-017129
• OSTI ID: 4094443
• Journal Information: IEEE Trans. Magn., v. MAG-11, no. 2, pp. 880-882, Journal Name: IEEE Trans. Magn., v. MAG-11, no. 2, pp. 880-882; ISSN IEMGA
• Country of Publication: United States
• Language: English

Related Subjects

*ELECTRIC BRIDGES-- JOSEPHSON EFFECT
*JOSEPHSON JUNCTIONS-- PERFORMANCE TESTING
420201* --Engineering--Facilities & Equipment--Cryogenic & Superconducting Equipment & Devices
ELECTRICAL PROPERTIES
ETCHING
GERMANIUM ALLOYS
INTERMETALLIC COMPOUNDS
MICROWAVE RADIATION
N42220* --Engineering--Facilities & Equipment--Cryogenic & Superconducting Equipment & Devices
NIOBIUM BASE ALLOYS
SPUTTERING