Linear and nonlinear excitations in two stacks of parallel arrays of long Josephson junctions

G. Carapella, Giovanni Constabile, R. Latempa, G. Filatrella, Jesper Mygind

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Abstract

We investigate a structure consisting of two parallel arrays of long Josephson junctions sharing a common electrode that allows inductive coupling between the arrays. A model for this structure is derived starting from the description of its continuous limit. The excitation of linear cavity modes known from continuous and discrete systems as well as the excitation of a new state exhibiting synchronization in two dimensions are inferred from the mathematical model of the system. The stable nonlinear solution of the coupled sine-Gordon equations describing the system is found to consist of a fluxon-antifluxon string. This is a two-dimensional phase-locked solitonic mode. Both linear and nonlinear excitations are numerically investigated and experimentally demonstrated in two stacks of five-junction arrays.
Original languageEnglish
JournalPhysical Review B Condensed Matter
Volume62
Issue number13
Pages (from-to)9095-9109
ISSN0163-1829
DOIs
Publication statusPublished - 2000

Bibliographical note

Copyright (2000) American Physical Society

Keywords

  • STATES
  • BUNCHED FLUXONS
  • FISKE MODES
  • PHASE-LOCKING
  • SINE-GORDON SYSTEMS
  • EMISSION

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