1. Institut für Festk?rperphysik, Friedrich‐Schiller‐Universit?t Jena, 07743 Jena, Germany;2. Physics Department, V.N. Karazin Kharkiv National University, 61077 Kharkiv, Ukraine
Abstract:
We found that the chain of junctions acts both as the source of radiation and as a part of the superconducting resonator when the effective capacitance of the resonator is larger than the total capacitance of all junctions. At this condition junctions are synchronized in‐phase not only at the resonance steps but also in the whole hysteretic region of I –V characteristics below the resonant frequency. The maximal allowable spread of critical currents for this effect is about 5–10%. We analyzed the origin of the effect both numerically and by the method of slowly varying amplitudes.
