Flux-flow-type Josephson oscillator consisting of epitaxial NbCN/MgO/NbCN junction

Author

Kiryu, S. ; Kohjiro, S. ; Shoji, A. ; Kodaira, S. ; Inatani, J. ; Sato, S.

Author_Institution

Electrotech. Lab., Ibaraki, Japan

Volume

3

Issue

1

fYear

1993

fDate

3/1/1993 12:00:00 AM

Firstpage

2528

Lastpage

2531

Abstract

Flux-flow-type Josephson oscillators consisting of epitaxial NbCN/MgO/NbCN junctions were fabricated and their current-voltage (I-V) characteristics were measured in various magnetic fields to evaluate their oscillation characteristics. On the I-V curve for a fabricated oscillator, clear current steps were observed up to 3 mV, indicating that oscillation occurs up to 1.4 THz. Using a theoretical model, available output power for the oscillator was calculated to be in the range from 20 mu W to 40 mu W in the frequency range from 500 GHz to 1.2 THz.<>

Keywords

Josephson effect; microwave integrated circuits; microwave oscillators; superconducting integrated circuits; superconducting junction devices; superconducting microwave devices; 20 to 40 muW; 500 GHz to 1.4 THz; I-V characteristics; Josephson oscillator; MgO substrate; THF; epitaxial NbCN-MgO-NbCN junction; flux flow type; magnetic fields; submillimetre wave type; theoretical model; Current measurement; Frequency; Laboratories; Magnetic field measurement; Magnetic fields; Niobium; Oscillators; Power generation; Substrates; Voltage;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.233538

Filename

233538