Suppression of phase-locking chaos in long Josephson junctions by biharmonic microwave fields

Journal Article · Thu Aug 01 04:00:00 EDT 1991 · Physical Review, B: Condensed Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.44.2720· OSTI ID:5326890

Salerno, M ^[1]

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1. Dipartimento di Fisica Teorica, Universita di Salerno, 84100 Salerno (Italy)

We consider the problem of phase locking of fluxon oscillations in long Josephson junctions irradiated by an external microwave field consisting of two harmonic signals, one at frequency {omega} and the other at frequency {omega}/2 added together (biharmonic driver). The analysis is performed in terms of a two-dimensional map constructed in terms of the fluxon time of flight and fluxon's energy inside the junction. As a result we find that the second driver enhances the stability of the phase-locking state and can be used to suppress the phase-locking chaos in the middle of the step induced by the first driver.

• OSTI ID: 5326890
• Journal Information: Physical Review, B: Condensed Matter; (United States), Journal Name: Physical Review, B: Condensed Matter; (United States) Vol. 44:6; ISSN PRBMD; ISSN 0163-1829
• Country of Publication: United States
• Language: English

Related Subjects

426001* -- Engineering-- Superconducting Devices & Circuits-- (1990-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
ELECTROMAGNETIC FIELDS
ELECTROMAGNETIC RADIATION
FREQUENCY MIXING
INHIBITION
JOSEPHSON JUNCTIONS
JUNCTIONS
MICROWAVE RADIATION
OSCILLATIONS
PHASE STABILITY
RADIATIONS
STABILITY
SUPERCONDUCTING JUNCTIONS