Effect of normal electrons in superconductors on the current-voltage characteristic of a Josephson junction

It is established that the conductivity of normal electrons in superconduct ors plays a large role in the current-voltage characteristic of a Josephson junction having a high critical current density, described on the basis of a nonlocal electrodynamics. It is shown in the resistive limit that the no rmal-electron contribution increases the current through the Josephson junc tion, while in the capacitive limit it decreases the contribution of Cheren kov resonances. (C) 1999 American Institute of Physics. [S1063-7834(99)0050 4-3].