Dynamics of point Josephson junctions in a microstrip line

Noise Induced Phenomena in Point Josephson Junctions

The investigation of nonlinear properties of Josephson junctions (JJs) is very important due to their broad applications in logic devices. Recently, a lot of attention was payed to Josephson logic devices with high damping. In papers [Rylyakov & Likharev, 1999; Bunyk et al., 2001] a description and analysis of the entire system of single flux quantum logic elements are presented. The noise prop...

Slow-fast dynamics in Josephson junctions

We report on a nontrivial type of slow-fast dynamics in a Josephson junction model externally shunted by a resistor and an inductor. For large values of the shunt inductance the slow manifold is highly folded, and different types of dynamical behavior in the fast variable are possible in dependence on the other parameters of the junction. We discuss how particular features of the dynamics are m...

Statics of Point Josephson Junctions in a Micro Strip

Abstract. We model the static behavior of point Josephson junctions in a micro strip line using a 1D linear differential equation with delta distributed sine non-linearities. We analyze the maximum current γmax crossing the micro strip for a given magnetic field H. In particular we establish its periodicity and analyze how it is affected by the geometry, length, type of current feed, position a...

On kink-dynamics of Stacked-Josephson Junctions

Dynamics of a fluxon in a stack of coupled long Josephson junctions is studied numerically. Based on the numerical simulations, we show that the dependence of the propagation velocity c on the external bias current γ is determined by the ratio of the critical currents of the two junctions J .

Modelling of fluxon dynamics in stacked Josephson tunnel junctions