Superconducting/Semiconducting Hybrids and Advance Memory Concepts for Superconducting Electronics
Final rept. 1 May 92-30 Sep 97
STANFORD UNIV CA SPONSORED PROJECTS OFFICE
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Superconducting logic circuits based on Josephson junctions JJ are the fastest, lowest power solid state digital circuit technology known. Large scale integration of such circuits has also been demonstrated. By contrast, current superconducting memory circuits based on flux quantization are not equivalently advanced. Very dense memory chips have not been possible to date and seem unlikely to come without new invention. The goal of this project was to explore alternative approaches to memory that would be compatible with Josephson junction logic circuits and capable of much denser memory arrays. Five new approaches were investigated ranging from modification to the current approach, use of semiconductor CMOS and wholly new concepts based on new physical principles. Three of these were identified as worth pursuing. They are use of cooled CMOS, use of cryogenic hybrid JJCMOS memory concepts and a totally new magnetoresistive approach to memory based on the superconductorferromagnet proximity effect.
- Electrical and Electronic Equipment
- Electricity and Magnetism
- Solid State Physics