Design of stable thin-film Josephson tunnel junctions for the maintenance of voltage standards
The behavior of Josephson tunnel junctions was theoretically investigated in order to determine the junction preparation parameters which allow one to obtain a junction, which, when subjected to microwave radiation, produces a convenient constantvoltage current step structure at high bias voltages. Major junction characteristics (geometrical dimensions, normal tunnel resistance R/sub N/, and critical current I$sub 0$, for example) are taken into account, as well as various coupling conditions between junction and microwave radiation. Stable Nb--oxide--Pb junctions having various electrical characteristics for rather different geometrical dimensions were prepared and tested. The experimental results are in good agreement with our calculations. (auth)
- Research Organization:
- LCIE and LGEP, Fontenay-aux-Roses, France
- NSA Number:
- NSA-33-017112
- OSTI ID:
- 4121897
- Journal Information:
- IEEE Trans. Magn., v. MAG-11, no. 2, pp. 817-820, Journal Name: IEEE Trans. Magn., v. MAG-11, no. 2, pp. 817-820; ISSN IEMGA
- Country of Publication:
- United States
- Language:
- English
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N42220* --Engineering--Facilities & Equipment--Cryogenic & Superconducting Equipment & Devices
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