Determination of the current density distribution in Josephson junctions

M. Carmody*, E. Landree, L. D. Marks, K. L. Merkle

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Scopus citations

Abstract

By using a phase retrieval algorithm similar to the Gerchberg-Saxton error-reduction algorithm with a generalized projection onto sets form, it is possible to restore the phase information that is not measured when experimentally recording Ic(B) data for Josephson junctions without making any assumptions about the current density distribution j(x). In general, it is not possible to find a unique solution for the 1-D phase problem; however, it is possible with the assistance of the genetic algorithm to efficiently find all possible solutions. If multiple solutions exist for a junction, the set of all possible solutions can be compared against the boundary microstructure and the correct solution can be determined.

Original languageEnglish (US)
Pages (from-to)145-153
Number of pages9
JournalPhysica C: Superconductivity and its applications
Volume315
Issue number3
DOIs
StatePublished - Apr 20 1999

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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