Dynamics of fluxons in a system of coupled Josephson junctions

Journal Article · Wed Jun 01 04:00:00 EDT 1988 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.37.9325· OSTI ID:7109023

Kivshar, Y S; Malomed, B A

Different dynamical processes with fluxons are analyzed in the framework of a known model describing two weakly coupled long Josephson junctions. It is demonstrated that two colliding fluxons belonging to different junctions can form a bound state due to energy dissipative losses. Collision between a fast fluxon and a large-amplitude (low-frequency) breather (bound fluxon-antifluxon state) belonging to different junctions is considered too, and a threshold condition for the possibility of breaking the breather into the fluxon-antifluxon pair is found. Some radiative effects are investigated. The equilibrium velocity of the fluxon's motion in the case when this velocity exceeds the limit velocity of the mate junction is found with regard to the ''Cherenkov'' energy losses. Then radiative effects accompanying collision of two fluxons are considered for the cases when the fluxons belong either to the same or to different junctions. For both cases the total emitted energy and its spectral distribution are obtained.

• Research Organization: Institute for Low Temperature Physics and Engineering, 47 Lenin Avenue, 310164 Kharkov, USSR
• OSTI ID: 7109023
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 37:16; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHERENKOV RADIATION
COUPLING
DYNAMICS
ELECTROMAGNETIC RADIATION
FLUX QUANTIZATION
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FLUX
MATHEMATICAL MODELS
MECHANICS
QUASI PARTICLES
RADIATIONS
SUPERCONDUCTING JUNCTIONS