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IEICE TRANSACTIONS on Electronics

Investigation of High-Tc Single Flux Quantum Logic Gates

Kazuo SAITOH, Hiroyuki FUKE

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Summary :

Logic operations in principle have been demonstrated based on the planar high-Tc Superconducting QUantum Interference Device (SQUID). Two kinds of logic gates were produced by using the focused ion beam (FIB) superconducting weak links fabricated in NdBa2Cu3O7-δ (NBCO) thin films. Logic gates investigated in this paper are (1) an rf-SQUID based logic gate which utilizes threshold characteristics, and (2) a dc-SQUID based logic gate which is an elementary gate of RSFQ circuits. Elementary logic operation such as (1) AND/OR logic and (2) SET-RESET flip-flop operation were successfully obtained in the logic gates. In addition to the present experimental results, some problems and future prospects are also discussed.

Publication
IEICE TRANSACTIONS on Electronics Vol.E80-C No.10 pp.1233-1239
Publication Date
1997/10/25
Publicized
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DOI
Type of Manuscript
Special Section INVITED PAPER (Special Issue on Basic Properties and Applications of Superconductive Electron Devices)
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