Minimum Current of a Two-Junction SQUID Gate

Keiji ENPUKU  Kuniaki SUEOKA  Keiji YOSHIDA  Fujio IRIE  

IEICE TRANSACTIONS (1976-1990)   Vol.E67   No.1   pp.33-39
Publication Date: 1984/01/25
Online ISSN: 
Print ISSN: 0000-0000
Type of Manuscript: PAPER
Category: Other Devices

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The minimum current of a two-junction SQUID gate has been studied theoretically. An analytical expression for the current-voltage characteristics of the SQUID gate has been obtained, which includes the minimum current of the SQUID gate. Studies have been made of the dependences of the minimum current on parameters of the SQUID gate such as an interlinked magnetic flux, a loop inductance and a resistance. It is shown that the minimum current of the SQUID gate depends strongly on the interlinked magnetic flux, while it becomes the same as that of a single junction in the absence of the magnetic flux. It is also shown that the obtained analytical results agree well with those of computer simulation.