The Coherent Dynamic State of Intrinsic Josephson Junctions

We developed a numerical model that described the dynamics of many long layered intrinsic Josephson junctions with normal edges. The IV characteristics of stacks containing two and three layers were calculated. We found that collective dynamics of junctions leads to the appearance of zero-field steps in the IV curves. We showed that due to the mutual inductive interaction of junctions, each of these zero-field steps was split into two steps. For the stack of two junctions, it was found that the dependence relations of voltages of split steps on the parameter of inductive coupling obeyed the simple relations following the theory of inductively coupled resonant contours. We also analyzed coherent radiation produced by the stack of long junctions.