Accession Number : ADA020101

Title :   Experimental Studies of Superconducting Weak Links.

Descriptive Note : Doctoral thesis,

Corporate Author : CORNELL UNIV ITHACA N Y MATERIALS SCIENCE CENTER

Personal Author(s) : Jackel,Lawrence D.

Report Date : JAN 1976

Pagination or Media Count : 264

Abstract : The principal contribution of this thesis has been to show that superconducting weak-link current-phase relations are generally not the simple sinusoids predicted by Josephson for a tunnel junction; instead it has been shown that there is a great variety of current-phase relations to be found in different types of weak links. The first measurements were made on an oxidized niobium point contact. The author found a sinusoidal current-phase relation. Measured fluxoid transition distributions were in excellent agreement with the theoretical predictions of Kurkijarvi. In uniform thickness tin bridges the author found the first distinctly non-sinusoidal current-phase relations. Scribed indium bridges were also examined in which the electrodes are thicker than the bridges.

Descriptors :   *Superconductors, Phase, Electric current, Niobium, Tin, Electric bridges, Theses, Josephson functions

Subject Categories : Electricity and Magnetism
      Solid State Physics

Distribution Statement : APPROVED FOR PUBLIC RELEASE