Vortices in long Josephson junctions. Final technical report, 15 Nov 88-14 Feb 92

Technical Report · Tue Jun 16 04:00:00 EDT 1992

OSTI ID:7246449

Nordman, J E; Beyer, J B

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.

• Research Organization: Wisconsin Univ., Madison, WI (United States). Dept. of Electrical and Computer Engineering
• OSTI ID: 7246449
• Report Number(s): AD-A-253230/7/XAB; CNN: AFOSR-89-0052
• Country of Publication: United States
• Language: English

Related Subjects

665412* -- Superconducting Devices-- (1992-)
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
AMPLIFIERS
COMPARATIVE EVALUATIONS
ELECTRONIC EQUIPMENT
EQUIPMENT
EVALUATION
FABRICATION
FILMS
FREQUENCY MEASUREMENT
HIGH-TC SUPERCONDUCTORS
JOSEPHSON JUNCTIONS
JUNCTION TRANSISTORS
JUNCTIONS
MAGNETIC FLUX
OSCILLATORS
RESEARCH PROGRAMS
SEMICONDUCTOR DEVICES
SUPERCONDUCTING DEVICES
SUPERCONDUCTING FILMS
SUPERCONDUCTING JUNCTIONS
SUPERCONDUCTORS
THIN FILMS
TRANSISTOR AMPLIFIERS
TRANSISTORS