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Electromagnetic properties of thin-film transformer-coupled superconducting tunnel junctions

Journal Article · · J. Appl. Phys.; (United States)
DOI:https://doi.org/10.1063/1.329487· OSTI ID:6002297

Multisection superconducting microstrip transformers with designed output impedances below 0.1 ..cap omega.. have been fabricated via precise photolithographic techniques to investigate the electromagnetic properties of Nb-Nb oxide-Pb tunnel junctions. The low-impedance transformer sections incorporate a rf sputtered thin-film Ta-oxide dielectric, and the reproducible external coupling achievable with this type of geometry makes possible the systematic investigation of electromagnetic device parameters as a function of tunneling oxide thickness.

Research Organization:
Physikalisch-Technische Bundesanstalt, Institut Berlin, D 1000 Berlin 10, Germany
OSTI ID:
6002297
Journal Information:
J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 52:9; ISSN JAPIA
Country of Publication:
United States
Language:
English