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

Antti Kemppinen (Corresponding Author), Antti J. Manninen, M. Möttönen, J.J. Vartiainen, J.T. Peltonen, J.P. Pekola

Research output: Contribution to journalArticleScientificpeer-review

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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.
Original languageEnglish
Article number052110
Number of pages3
JournalApplied Physics Letters
Volume92
Issue number5
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

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critical current
retarding
interference
Josephson junctions
inductance
magnetic flux
direct current

Cite this

Kemppinen, A., Manninen, A. J., Möttönen, M., Vartiainen, J. J., Peltonen, J. T., & Pekola, J. P. (2008). Suppression of the critical current of a balanced superconducting quantum interference device. Applied Physics Letters, 92(5), [052110]. https://doi.org/10.1063/1.2842413
Kemppinen, Antti ; Manninen, Antti J. ; Möttönen, M. ; Vartiainen, J.J. ; Peltonen, J.T. ; Pekola, J.P. / Suppression of the critical current of a balanced superconducting quantum interference device. In: Applied Physics Letters. 2008 ; Vol. 92, No. 5.
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Kemppinen, A, Manninen, AJ, Möttönen, M, Vartiainen, JJ, Peltonen, JT & Pekola, JP 2008, 'Suppression of the critical current of a balanced superconducting quantum interference device', Applied Physics Letters, vol. 92, no. 5, 052110. https://doi.org/10.1063/1.2842413

Suppression of the critical current of a balanced superconducting quantum interference device. / Kemppinen, Antti (Corresponding Author); Manninen, Antti J.; Möttönen, M.; Vartiainen, J.J.; Peltonen, J.T.; Pekola, J.P.

In: Applied Physics Letters, Vol. 92, No. 5, 052110, 2008.

Research output: Contribution to journalArticleScientificpeer-review

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AU - Kemppinen, Antti

AU - Manninen, Antti J.

AU - Möttönen, M.

AU - Vartiainen, J.J.

AU - Peltonen, J.T.

AU - Pekola, J.P.

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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

VL - 92

JO - Applied Physics Letters

JF - Applied Physics Letters

SN - 0003-6951

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