Manipulation and generation of supercurrent in out-of-equilibrium Josephson tunnel nanojunctions

S. Tirelli, Alexander Savin, C.P. Garcia, Jukka Pekola, F. Beltram, Francesco Giazotto

Research output: Contribution to journalArticle

29 Citations (Scopus)
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Abstract

We demonstrate experimentally the manipulation of supercurrent in Al−AlOx−Ti Josephson tunnel junctions by injecting quasiparticles in a Ti island from two additional tunnel-coupled Al superconducting reservoirs. Both supercurrent enhancement and quenching with respect to equilibrium are achieved. We demonstrate cooling of the Ti line by quasiparticle injection from the normal state deep into the superconducting phase. A model based on heat transport and the nonmonotonic current-voltage characteristic of a Josephson junction satisfactorily accounts for our findings.
Original languageEnglish
Article number077004
Pages (from-to)1-4
Number of pages4
JournalPhysical Review Letters
Volume101
Issue number7
DOIs
Publication statusPublished - 14 Aug 2008
MoE publication typeA1 Journal article-refereed

Keywords

  • equilibrium
  • Josephson tunnel junction
  • supercurrent

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