Parametric amplification on rf-induced steps in a Josephson tunnel junction

Journal Article · Sat Mar 31 23:00:00 EST 1979 · J. Appl. Phys.; (United States)

DOI:https://doi.org/10.1063/1.326184· OSTI ID:6182948

Soerensen, O H; Pedersen, N F; Mygind, J; Dueholm, B

Parametric effects including amplification in a singly degenerate mode have been observed in Josephson tunnel junctions at dc bias points on rf-induced steps. Net gain at 9 GHz was achieved with a bias on the fundamental 18-GHz step and subharmonic self-oscillations were seen on 18 and 70-GHz rf-induced steps even at voltages approaching the energy gap. A qualitative explanation of the results is presented.

• Research Organization: Physics Laboratory I, The Technical University of Denmark, DK-2800 Lyngby, Denmark
• OSTI ID: 6182948
• Journal Information: J. Appl. Phys.; (United States), Journal Name: J. Appl. Phys.; (United States) Vol. 50:4; ISSN JAPIA
• Country of Publication: United States
• Language: English

Related Subjects

420201* -- Engineering-- Cryogenic Equipment & Devices
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
AMPLIFIERS
ELECTROMAGNETIC RADIATION
ELECTRONIC EQUIPMENT
ENERGY GAP
ENERGY SPECTRA
GAIN
JOSEPHSON JUNCTIONS
MICROWAVE RADIATION
OSCILLATION MODES
PARAMETRIC AMPLIFIERS
RADIATIONS
RF SYSTEMS
SPECTRA
SUPERCONDUCTING JUNCTIONS
TUNNEL EFFECT