CURRENT TRANSPORT MECHANISM IN HIGH-T-C SUPERCONDUCTING JOSEPHSON-JUNCTIONS ON BICRYSTALS

The mechanism for the transport of the normal component of the current in high-T-c superconducting Josephson junctions on a bicrystal substr ate has been studied experimentally. At high voltages, the behavior of the conductance of the junctions as a function of the voltage and the temperature agrees well with the behavior predicted by the theory of Glazman and Matveev for structures in which the conductivity results f rom inelastic resonant tunneling through a finite number of localized states. (C) 1994 American Institute of Physics.