Pulsed Laser Deposition of High Tc Superconducting Thin Films
Abstract
Superconducting thin films have been deposited in-situ on several substrate materials using pulsed excimer laser deposition. The major accomplishments were in four separate areas: (1) We were the first to grow excellent quality YBa2Cu3O7 on Si and on silicon-on-sapphire. The quality of these films has enabled several applications and other studies to be realized. These include infrared detectors and superconducting metal-insulator-semiconductor structures, as well as flux motion studies. (2) We were the first to grow excellent quality YBCO on GaAs. This success allows superconductors to be combined with high-speed GaAs for future device applications. (3) We were the first to grow a-axis oriented YBCO films using monolayer buffers of PrO2. This structural orientation favors technical applications, such as, Josephson devices or tunnel junctions. (4) We were the first to observe an extreme sensitivity of T sub c to cool-down rate for epitaxial Fe-doped YBCO films. These results not only may yield information on the role of the Cu-O chains and planes in the superconductivity of this material but also may lead to procedures to increase the flux pinning.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 15, 1992
- Accession Number
- ADA250657
Entities
People
- G. A. Connell
- J. B. Boyce
Organizations
- PARC