Vortices in Long Josephson Junctions
Abstract
This research involved the study of quantized flux lines or vortices in long Josephson junction structures and in superconductive films in the context of electronic device possibilities suggested by these structures. The work encompassed fabrication and low frequency electrical measurement of thin film device configuration coupled with physical device modeling. This was followed by high frequency parameter measurement and creation of circuit models for the devices. In some cases these circuit models were used to model and optimize specific circuits such as amplifiers or oscillators and, when warranted, prototypes were fabricated and tested. The primary structures studied were the long Josephson junction transistors, including the vortex flow transistor (VFT) and the superCIT. In addition, initial success with an exploratory device using a single high Tc superconducting film, the SFFT, led to some concentration on circuit realizations with this device. Comparisons were made of these three devices which were fabricated using a variety of thin film superconductors.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 16, 1992
- Accession Number
- ADA253230
Entities
People
- James B. Beyer
- James E. Nordman
Organizations
- University of Wisconsin–Madison