Stability of the McCumber curve for long Josephson tunnel junctions

Journal Article · Thu Oct 01 04:00:00 EDT 1987 · Phys. Rev. B: Condens. Matter; (United States)

DOI:https://doi.org/10.1103/PhysRevB.36.5225· OSTI ID:6113039

Costabile, G; Pagano, S; Parmentier, R D

The stability of the McCumber solution of the perturbed sine-Gordon equation that describes the dynamics of a long Josephson junction may conveniently be studied within the context of a Fourier-Galerkin approximation. In the absence of an externally applied magnetic field, this procedure predicts analytically how the number, locations, and widths of the unstable regions of the McCumber curve depend on the junction parameters. These instabilities are of physical interest because they evolve into the fluxon oscillations associated with zero-field steps. In the presence of a small applied magnetic field, the same procedure provides a technique for studying Fiske steps.

• Research Organization: Dipartimento di Fisica, Universita-grave-accent di Salerno, I-84100 Salerno, Italy
• OSTI ID: 6113039
• Journal Information: Phys. Rev. B: Condens. Matter; (United States), Journal Name: Phys. Rev. B: Condens. Matter; (United States) Vol. 36:10; ISSN PRBMD
• Country of Publication: United States
• Language: English

Related Subjects

656100* -- Condensed Matter Physics-- Superconductivity
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DYNAMICS
ELECTRIC CONDUCTIVITY
ELECTRICAL PROPERTIES
EQUATIONS
FIELD EQUATIONS
GALERKIN-PETROV METHOD
ITERATIVE METHODS
JOSEPHSON JUNCTIONS
JUNCTIONS
MAGNETIC FIELDS
MECHANICS
OSCILLATIONS
PERTURBATION THEORY
PHYSICAL PROPERTIES
SINE-GORDON EQUATION
STABILITY
SUPERCONDUCTING JUNCTIONS