Accession Number : AD0782394

Title :   Electrical Behavior of Superconducting Microbridges.

Descriptive Note : Technical rept.,

Corporate Author : HARVARD UNIV CAMBRIDGE MASS DIV OF ENGINEERING AND APPLIED PHYSICS

Personal Author(s) : Skocpol,William J.

Report Date : JUL 1974

Pagination or Media Count : 176

Abstract : The experimental behavior of superconducting thin-film microbridges, and simple theoretical interpretations of it, are presented for a wide variety of conditions. The most important results concern nonequilibrium aspects of cyclical phase-slip processes observed near Tc, and heating effects observed at low temperatures and high voltages. It is shown experimentally that steps in the I-V curves of long superconducting microbridges near Tc are due to spatially localized voltage units (interpreted as quantum phase-slip centers) which appear at local critical currents determined primarily by variations of Tc along the bridge. Also observed is the ac Josephson effect associated with such centers. (Modified author abstract)

Descriptors :   *MICROELECTRONICS, *MICROWAVE BRIDGES, *SUPERCONDUCTORS, SUPERCONDUCTIVITY, THIN FILMS, ELECTRIC BRIDGES, JOSEPHSON JUNCTIONS, HYSTERESIS

Subject Categories : Electrical and Electronic Equipment
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE