Novel design of rapid single flux quantum logic based on a single layer of a high-T c superconductor
- 3 July 1995
- journal article
- research article
- Published by AIP Publishing in Applied Physics Letters
- Vol. 67 (1) , 138-140
- https://doi.org/10.1063/1.115472
Abstract
We suggest a new design of rapid single flux quantum (RSFQ) logic circuits which is based on a single superconducting layer and does not require a superconducting ground plane. Small inductances of about 10 pH, obligatory for RSFQ circuits, are formed as narrow slits of widths comparable to the London penetration depth (≂0.15 μm). The design allows us to decrease the geometric size of the RSFQ cell. Test circuits with YBaCuO grain boundary junctions on asymmetric 32° Y– ZrO2 bicrystals were used to measure the slit inductance per unit length and the mutual inductance of neighboring slits. A typical inductance of a 0.4 μm slit was found to be 0.7–0.8 pH/μm.Keywords
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