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Avoidance Of Punch-Through In Latching Circuits With Josephson Devices

IP.com Disclosure Number: IPCOM000067572D
Original Publication Date: 1979-Aug-01
Included in the Prior Art Database: 2005-Feb-20

Publishing Venue

IBM

Related People

Authors:
Baechtold, W [+details]

Abstract

The punch-through problem in Josephson devices hampers some applications. Commuting the supply current of a resistively loaded Josephson device causes failure to attain the superconducting state, if the commutation current slope is too steep. Punch-through can be avoided by a sufficiently long dead-time between clock cycles for logic circuits. High junction capacitance, as encountered in Nb-Josephson devices, causes long dead-times and substantially degrades the logic system performance.