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Analysis of the periodicity of voltage versus applied flux curves of planar and three-dimensional SQUIDs in the presence of coupling inhomogeneity

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R De Luca

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Coupling inhomogeneities in the Josephson junctions of planar 0-SQUIDs and π-SQUIDs and of three-dimensional SQUIDs are considered. Starting from the properties of planar SQUIDs, it is shown that slight non-homogeneous couplings of the twelve junctions in three-dimensional superconducting interferometers do not affect the periodicity properties of voltage versus applied flux curves. The results are obtained by applying a rigorous and general analytic approach to planar and three-dimensional superconducting devices.


PACS

85.25.Dq Superconducting quantum interference devices (SQUIDs)

85.25.Am Superconducting device characterization, design, and modeling

85.25.Cp Josephson devices

Subjects

Superconductivity

Dates

Issue 12 (December 2009)

Received 27 June 2009, in final form 8 September 2009

Published 23 October 2009



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