Suppression of the critical current of a balanced superconducting quantum interference device

Antti Kemppinen; Antti J. Manninen; Mikko Möttönen; Juha J. Vartiainen; Joonas T. Peltonen; Jukka P. Pekola

doi:10.1063/1.2842413

Suppression of the critical current of a balanced superconducting quantum interference device

Antti Kemppinen (Corresponding Author), Antti J. Manninen, Mikko Möttönen, Juha J. Vartiainen, Joonas T. Peltonen, Jukka P. Pekola

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14 Citations (Scopus)

Abstract

We present an experimental study of the magnetic flux dependence of the critical current of a balanced superconducting quantum interference device (SQUID) with three Josephson junctions in parallel. Unlike for ordinary direct current (dc) SQUIDs, the suppression of the critical current does not depend on the exact parameters of the Josephson junctions. The suppression is essentially limited only by the inductances of the SQUID loops. We demonstrate a critical current suppression ratio of higher than 300 in a balanced SQUID with a maximum critical current 30 nA.

Original language	English
Article number	052110
Number of pages	3
Journal	Applied Physics Letters
Volume	92
Issue number	5
DOIs	https://doi.org/10.1063/1.2842413
Publication status	Published - 2008
MoE publication type	A1 Journal article-refereed

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10.1063/1.2842413

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abstract = "We present an experimental study of the magnetic flux dependence of the critical current of a balanced superconducting quantum interference device (SQUID) with three Josephson junctions in parallel. Unlike for ordinary direct current (dc) SQUIDs, the suppression of the critical current does not depend on the exact parameters of the Josephson junctions. The suppression is essentially limited only by the inductances of the SQUID loops. We demonstrate a critical current suppression ratio of higher than 300 in a balanced SQUID with a maximum critical current 30 nA.",

author = "Antti Kemppinen and Manninen, {Antti J.} and Mikko M{\"o}tt{\"o}nen and Vartiainen, {Juha J.} and Peltonen, {Joonas T.} and Pekola, {Jukka P.}",

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AU - Kemppinen, Antti

AU - Manninen, Antti J.

AU - Möttönen, Mikko

AU - Vartiainen, Juha J.

AU - Peltonen, Joonas T.

AU - Pekola, Jukka P.

PY - 2008

Y1 - 2008

N2 - We present an experimental study of the magnetic flux dependence of the critical current of a balanced superconducting quantum interference device (SQUID) with three Josephson junctions in parallel. Unlike for ordinary direct current (dc) SQUIDs, the suppression of the critical current does not depend on the exact parameters of the Josephson junctions. The suppression is essentially limited only by the inductances of the SQUID loops. We demonstrate a critical current suppression ratio of higher than 300 in a balanced SQUID with a maximum critical current 30 nA.

AB - We present an experimental study of the magnetic flux dependence of the critical current of a balanced superconducting quantum interference device (SQUID) with three Josephson junctions in parallel. Unlike for ordinary direct current (dc) SQUIDs, the suppression of the critical current does not depend on the exact parameters of the Josephson junctions. The suppression is essentially limited only by the inductances of the SQUID loops. We demonstrate a critical current suppression ratio of higher than 300 in a balanced SQUID with a maximum critical current 30 nA.

U2 - 10.1063/1.2842413

DO - 10.1063/1.2842413

M3 - Article

SN - 0003-6951

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 5

M1 - 052110

ER -

Suppression of the critical current of a balanced superconducting quantum interference device

Abstract

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