Bifurcating, chaotic, and intermittent solutions in the rf-biased Josephson junction

Journal Article · Wed Feb 01 04:00:00 EST 1984 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.29.1231· OSTI ID:6582332

Octavio, M

Extensive numerical simulations of the rf-biased Josephson junction are presented. It is shown that, as the amplitude is increased for fixed damping and frequency, an apparently endless sequence of bifurcating-chaotic trees separated by periodic solutions exists. The state diagram characterized in the amplitude-damping plane at fixed frequency (..cap omega.. = 0.65) shows a complex set of solutions. A detailed study of the transition in the high-damping limit is presented, indicating the bounds for asymmetric, bifurcating, and chaotic solutions for low ..beta../sub c/. It is shown that strange attractors are common to trapped and free-running chaotic solutions for nearby amplitudes due to intermittency among the various basins of attraction. Return maps at high amplitudes are found to be essentially one dimensional. Experimental consequences of our simulations are presented in terms of equivalent noise temperatures at low frequencies, resulting in maximum noise temperatures of the order of 10/sup 6/--10/sup 7/ K.

• Research Organization: Fundacion Instituto de Ingenierie e Instituto Venezolano de Investigaciones Cientificas, Apartado 40200, Caracas 1040A, Venezuela
• OSTI ID: 6582332
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 29:3; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656101* -- Solid State Physics-- Superconductivity-- General Theory-- (-1987)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLITUDES
DIAGRAMS
JOSEPHSON JUNCTIONS
JUNCTIONS
NOISE
PHASE DIAGRAMS
PHASE TRANSFORMATIONS
SUPERCONDUCTING JUNCTIONS
TEMPERATURE NOISE