Phase-locking of disordered two-dimensional Josephson junction arrays to microwave radiation

A connection between the disorder in the critical currents of two-dimension al arrays of Josephson junctions and the amount of phase-locking of a row t o an external microwave signal is proposed. We have computed the probabilit y of phase-locking as a function of the spread of the critical currents of the individual junctions. The analytic results are in good agreement with n umerical simulations. The predictions can be also qualitatively compared to the experiments. (C) 2000 Elsevier Science B.V, All rights reserved.