Accession Number:

ADA343722

Title:

Advanced Superconducting Materials and Device Concepts

Descriptive Note:

Final rept. 1 Nov 94-30 Apr 98

Corporate Author:

STANFORD UNIV CA SPONSORED PROJECTS OFFICE

Report Date:

1998-04-01

Pagination or Media Count:

14.0

Abstract:

Various materials and physical processes relevant to the electronic applications of high-Tc superconductivity have been studied. The materials include 123 YBaCuO, 2212 BiSrCaCuO, SrRuO3, SrCuO2, La-CaMnO3, and related complex oxides. The results include 1 evidence for and practical consequences of the novel d-wave pairing symmetry of the high-Tc superconductors 2 the thin film growth and physical behavior of various potential barrier materials for high-Tc superconductornormalsuperconductor SNS Josephson junctions, including evidence of the breakdown of the conventional Boltzmann theory of transport in SrRuO3 and 3 the demonstration of a ferroelectric field effect in ultrathin films of SrCuO2 and SrRuO3 on PZT, including readwrite operations using a scanning probe on submicron scales. The origin of the colossal magneto-resistance in the maganites was also clarified. The transient nonlinear dynamics of series arrays of Josephson junctions operating as a large-signal output amplifier between superconducting electronics and conventional semiconductor circuits were analyzed and practical design issues identified.

Subject Categories:

  • Inorganic Chemistry
  • Laminates and Composite Materials
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE