Harmonic synchronization in resistively coupled Josephson junctions

Journal Article · Fri Apr 01 00:00:00 EST 1994 · Journal of Applied Physics; (United States)

DOI:https://doi.org/10.1063/1.356082· OSTI ID:5171996

Blackburn, J A ^[1]; Gronbech-Jensen, N ^[2]; Smith, H J.T. ^[3]

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1. Department of Physics and Computing, Wilfrid Laurier University, Waterloo, Ontario N2L 3C5 (Canada)
2. Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545 (United States)
3. Department of Physics, University of Waterloo, Waterloo, Ontario N2L 3G1 (Canada)

The oscillations of two resistively coupled Josephson junctions biased only by a single dc current source are shown to lock harmonically in a 1:2 mode over a significant range of bias current, even when the junctions are identical. The dependence of this locking on both junction and coupling parameters is examined, and it is found that, for this particular two-junction configuration, 1:1 locking can never occur, and also that a minimum coupling coefficient is needed to support harmonic locking. Some issues related to subharmonic locking are also discussed.

• OSTI ID: 5171996
• Journal Information: Journal of Applied Physics; (United States), Vol. 75:7; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
JOSEPHSON JUNCTIONS
SYNCHRONIZATION
COUPLING
HARMONICS
MODE LOCKING
OSCILLATIONS
JUNCTIONS
SUPERCONDUCTING JUNCTIONS
665412* - Superconducting Devices- (1992-)