Phase locking and flux-flow resonances in Josephson oscillators driven by homogeneous microwave fields

Mario Salerno, Mogens Rugholm Samuelsen

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Abstract

We investigate both analytically and numerically phase locking and flux-flow resonances of long Josephson junctions in the presence of homogeneous microwave fields. We use a power balance analysis and a perturbation expansion around the uniform rotating solution to derive analytical expressions for IV curves. The dependence of the flux-flow step on the amplitude of the rf field and the appearance of satellite steps are explained. As a result we show that satellite steps around the main flux-flow resonance are spaced by both odd and even harmonics of the rf frequency. An analytical expression for the locking range in current of the phase-lock steps is also derived. These results are found to be in good agreement with numerical results.
Original languageEnglish
JournalPhysical Review B
Volume59
Issue number22
Pages (from-to)14653-14658
ISSN2469-9950
DOIs
Publication statusPublished - 1999

Bibliographical note

Copyright (1999) by the American Physical Society.

Keywords

  • FISKE MODES
  • MILLIMETER
  • STEPS
  • SUBMILLIMETER WAVE REGION
  • JUNCTIONS

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