Influence of coupling parameter on current-voltage characteristics of intrinsic Josephson junctions in high-T-c superconductors

摘要

We study the current-voltage characteristics of intrinsic Josephson junctions in high-T-c superconductors by numerical calculations and in framework of capacitively coupled Josephson junctions model we obtain the total number of branches. The influence of the coupling parameter a on the current-voltage characteristics at fixed parameter beta(beta(2) = 1/beta(c), where beta(c), is McCumber parameter) and the influence of a on beta-dependence of the current-voltage characteristics are investigated. We obtain the a-dependence of the branch's slopes and branch's endpoints. The presented results show new features of the coupling effect on the scheme of hysteresis jumps in current-voltage characteristics of intrinsic Josephson junctions in high-T-c superconductors. (c) 2005 Elsevier B.V. All rights reserved.