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

    Research output: Contribution to journalArticleScientificpeer-review

    10 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 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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