We present a simple theory for Josephson flux-flow oscillators in the presence of nonuniform microwave fields. In particular we derive an analytical expression for the I−V characteristic of the oscillator from which we show that satellite steps are spaced around the main flux-flow resonance by only even harmonics of the rf frequency. This result is found to be in good agreement with our numerical results and with experiments.
|Titolo:||Josephson flux-flow oscillators in nonuniform microwave fields|
|Autori interni:||SALERNO, Mario|
|Data di pubblicazione:||2000|
|Rivista:||PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS|
|Appare nelle tipologie:||1.1.2 Articolo su rivista con ISSN|