Superconducting/semiconducting hybrids and advance memory concepts for superconducting electronics. Final report, 1 May 1992-30 September 1997

Technical Report · Sat Nov 01 04:00:00 EST 1997

OSTI ID:569299

Beasley, M R; Horowitz, M A

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 JJ/CMOS memory concepts and a totally new magnetoresistive approach to memory based on the superconductor/ferromagnet proximity effect.

• Research Organization: Stanford Univ., CA (United States). Sponsored Projects Office
• OSTI ID: 569299
• Report Number(s): AD-A--333423/2/XAB; CNN: Contract N00014-92-J-1886
• Country of Publication: United States
• Language: English

Related Subjects

66 PHYSICS
CRYOGENICS
DIGITAL SYSTEMS
FERROMAGNETISM
FLUX QUANTIZATION
HYBRID SYSTEMS
JOSEPHSON JUNCTIONS
LOGIC CIRCUITS
MAGNETORESISTANCE
MEMORY DEVICES
PROGRESS REPORT
QUANTIZATION
SUPERCONDUCTIVITY
SUPERCONDUCTORS