Size effects in the conductivity of thin-film bridges of high-temperature superconductors
Afanas'ev A. S., Gubankov V. N. , Divin Yu. Ya., Shadrin P. M.
The effect of the dimensions (wj) of film bridges on their electrical conductivity is linked with the existence of large-scale percolation processes, with a correlation radius L much greater than the grain size a. A time-varying Josephson effect is observed in such bridges under the conditions ^(0) <ξα <w, I <L.