The Resonant Interaction of Intrinsic Josephson Junctions With Standing Waves

IV-characteristics of shunted microbridges made of Tl₂Ba₂CaCu₂O₈ (TBCCO) were measured. The TBCCO films were grown epitaxially on 20° misaligned LaAlO₃ substrates and then covered by the gold shunting layer. Each of the microbridges consisted of about 360 shunted intrinsic Josephson junctions. Self-induced resonant particularities with a main period of about 17 mV were found on IV-curves. We showed that these particularities did not depend on the characteristics of the individual junctions and that they were connected with the geometrical dimensions of the system. The origin of particularities was the interaction of Josephson generation with the standing wave appeared in the system. We modeled this interaction considering radiation of junctions into the transmission line and found that the model described the main resonant structure of IV-characteristics. Strong synchronization of junctions appeared in the vicinity of the first particularity.