Resonant flux motion and I − V - characteristics in frustrated Josephson junctions

Soliton excitations and qubit implementation in frustrated Josephson junction

We describe the dynamics of fluxons moving in a frustrated Josephson junction with p, d, and f -wave symmetry and calculate the I − V characteristics. The behavior of fluxons is quite distinct in the long and short length junction limit. For long junctions the intrinsic flux is bound at the center and the moving integer fluxon or antifluxon interacts with it only when it approaches the junction...

Resonant propagation of fluxons in corner junctions with triplet pairing symmetry

We present the numerical solutions for the I − V characteristics, and describe the motion of fluxons in a frustrated Josephson junction made of an unconventional triplet superconductor and an s-wave superconductor. In the inline geometry, and long length limit the moving integer fluxon interacts with the bound fractional fluxon but is not able to change its position or polarity. We observe diff...

Radiation linewidth of a long Josephson junction in the flux-flow regime.

Theoretical model for the radiation linewidth in a multi-fluxon state of a long Josephson junction is presented. Starting from the perturbed sine-Gordon model with the temperature dependent noise term, we develop a collective coordinate approach which allows to calculate the finite radiation linewidth due to excitation of the internal degrees of freedom in the moving fluxon chain. At low fluxon...

Resonant-cavity-induced phase locking and voltage steps in a Josephson array

We describe a simple dynamical model for an underdamped Josephson junction array coupled to a resonant cavity. From numerical solutions of the model in one dimension, we find that ~i! current-voltage characteristics of the array have self-induced resonant steps ~SIRS!, ~ii! at fixed disorder and coupling strength, the array locks into a coherent, periodic state above a critical number of active...

Dynamical Breaking of Charge Neutrality in Intrinsic Josephson Junctions: Common Origin for Microwave Resonant Absorptions and Multiple-Branch Structures in the I-V Characteristics