Microwave devices using the proximity effect between superconducting and normal metals

✍ Scribed by H.A. Combet; Y. Chouan; E. Thepault

• Publisher: Elsevier Science
• Year: 1971
• Tongue: English
• Weight: 344 KB
• Volume: 11
• Category: Article
• ISSN: 0011-2275
• DOI: 10.1016/0011-2275(71)90289-x

✦ Synopsis

Superconductors coated with normal metals present more strongly temperature or field dependant characteristic lengths (penetration depth, coherence length on the N side.. ,) than bare superconductors. These properties can be used in "stripline" transmission line structures. The authors describe some experimental results obtained with resonant structures at a frequency of 4 GHz, using mainl/ PbCu, PbSn, or SnAu contacts. The use of the proximitv effect in magnetically tunable filter cells or attenuators, and the intrinsic limitations of these devices are discussed.

The authors are with Centre National d'Etudes des Telecommunications, Centre de Recherches de Lannion, (22) Lannion, France.