Influence of the Josephson junction geometry on the spectral properties of the flux-flow oscillator

TL;DR

This paper numerically investigates how the geometry of Josephson junctions influences the spectral and power characteristics of flux-flow oscillators, highlighting differences between inline and overlap types under various conditions.

Contribution

It introduces a detailed numerical analysis of how junction geometry affects flux-flow oscillator performance, emphasizing the dynamics differences between inline and overlap junctions.

Findings

Spectral and power properties vary with junction geometry.

Inline and overlap junctions exhibit fundamentally different dynamics.

Junction length and noise intensity significantly influence behavior.

Abstract

Numerical investigation of the effects of junction geometry on the performance of the flux-flow type Josephson oscillator has been done. Using direct simulation of the sine-Gordon equation with account of RC load the spectral and power properties for different current density distributions have been calculated. With discussion of the fundamental differences in the dynamics of the inline and overlap junctions the various behavior depending on the junction length and noise intensity has been shown.