Josephson flux-flow oscillators in nonuniform microwave fields
Mario Salerno, M. R. Samuelsen
DOI 10.1103/PhysRevB.61.99 · Physical Review B
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Abstract
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.
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