THEORETICAL AND EXPERIMENTAL INVESTIGATION OF PHASE COHERENCE IN SHORTED 2D ARRAYS OF HIGH-T-C JOSEPHSON-JUNCTIONS

Phase coherence in shorted 2D Josephson junction arrays shunted by res istive load in presence of disorder and magnetic field are investigate d theoretically and experimentally. Using computer simulation it is sh own that magnetic field negatively influences radiation properties of such arrays. Similarly to XY-type of 2D arrays maximal spread in junct ion parameters which allows stable phase-locking state is +/- 11 %. 2D arrays with topology of those investigated theoretically were fabrica ted using high-T-c superconductor junction, technology. The phase-cohe rence (voltage locking) between rows was observed experimentally.