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

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

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

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Title:	Suppression of the critical current of a balanced superconducting quantum interference device
Author(s):	Kemppinen, Antti ; Manninen, Antti J. ; Möttönen, Mikko ; Vartiainen, Juha J. ; Peltonen, Joonas T. ; Pekola, Jukka P.
Date:	2008
Language:	en
Pages:	052110/1-3
Department:	Department of Applied Physics Teknillisen fysiikan laitos
Series:	Applied Physics Letters, Volume 92, Issue 5
ISSN:	0003-6951 (printed)
DOI-number:	10.1063/1.2842413
Subject:	Physics
Keywords:	SQUID, critical currents, superconducting quantum interference devices, electric measurements, nonlinear acoustics, Josephson junctions
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Citation: Kemppinen, Antti & Manninen, Antti J. & Möttönen, Mikko & Vartiainen, Juha J. & Peltonen, Joonas T. & Pekola, Jukka. 2008. Suppression of the critical current of a balanced superconducting quantum interference device. Applied Physics Letters. Volume 92, Issue 5. P. 052110/1-3. ISSN 0003-6951 (printed). DOI: 10.1063/1.2842413.
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 30nA .
Rights: © 2008 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. The following article appeared in Applied Physics Letters and may be found at http://scitation.aip.org/content/aip/journal/apl/92/5/10.1063/1.2842413
Permanent link to this item: http://urn.fi/URN:NBN:fi:aalto-201505192756 Email this Export to RefWorks QR Code Print BibTex Tweet

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