Long Josephson junctions driven by biharmonic signals

G. Filatrella; G. Rotoli

doi:10.1103/PhysRevB.50.12802

← Back to search

Long Josephson junctions driven by biharmonic signals

G. Filatrella, G. Rotoli

DOI 10.1103/PhysRevB.50.12802 · Physical Review B

T1

Active bibliographic source — not scientific approval

Bibliographic access preserves source history; it does not approve extracted materials or validate reported claims. Review warnings on each occurrence separately.

Abstract

Biharmonic-driven long Josephson junctions are studied within the framework of a perturbative approach for the motion of fluxons in the junctions. A thorough study of phase-locking states is carried out giving a generalization of the phase-locking conditions valid for any type of periodic external drive. These conditions give rise to a classification of phase-locked steps on the current-voltage characteristics of the junction. Enhancement of dynamical phase-locked regions and stabilization in connection with the phenomenon of chaos suppression are two interesting characteristics of biharmonic phase-locking states. Numerical simulations show that the theoretical predictions are, in general, well reproduced.