FINE CURRENT STRUCTURE AND ATTRACTOR BEHAVIOR IN LONG JOSEPHSON-JUNCTIONS

The resistive states of long Josephson junctions (LJJ) with strong fri ction are studied numerically. Besides a variety of chaotic behaviours different types of attractors are found for LJJs driven by dc bias cu rrent. We use a model based on the damped sine-Gordon equation (SGE) a nd assume that the influence of the bias field is felt through the bou ndary conditions only. The zero-field steps in the current-voltage cha racteristics and fine spatial structure of the time-averaged supercurr ent density are discussed.