Advanced Superconducting Materials and Device Concepts
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-Ca)MnO3, 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 superconductor/normal/superconductor (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 read/write 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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1998
- Accession Number
- ADA343722
Entities
People
- A. Kapitulnik
- Malcolm Beasley
- Theodore H. Geballe
Organizations
- Stanford University