Tunnel spectroscopy of a proximity Josephson junction

M. Meschke, J.T. Peltonen, J.P. Pekola, F. Giazotto

Research output: Contribution to journalArticleScientificpeer-review

32 Citations (Scopus)
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Abstract

We present tunnel spectroscopy experiments on the proximity effect in lateral superconductor–normal-metal–superconductor Josephson junctions. Our weak link is embedded into a superconducting ring allowing phase biasing of the Josephson junction by an external magnetic field. We explore the temperature and phase dependence of both the induced minigap and the modification of the density of states in the normal metal. Our results agree with a model based on the quasiclassical theory in the diffusive limit. The device presents an advanced version of the superconducting quantum interference proximity transistor, now reaching flux sensitivities of 3 nA/Φ0, where Φ0 is the flux quantum.
Original languageEnglish
Article number214514
Pages (from-to)1-5
Number of pages5
JournalPhysical Review B
Volume84
Issue number21
DOIs
Publication statusPublished - 9 Dec 2011
MoE publication typeA1 Journal article-refereed

Keywords

  • Josephson junction
  • tunnel spectroscopy

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