Hybrid superconductor-ferromagnet transistor-like device

I. P. Nevirkovets, M. A. Belogolovskii

Research output: Contribution to journalArticle

10 Scopus citations

Abstract

We demonstrate theoretically and experimentally that a ferromagnetic layer as thin as a few nanometres, which is almost transparent for non-superconducting charge transport, can be used as a cut-off filter to block transport of charge-carrier superconducting correlations. This property may be exploited in some applications, as is exemplified by the case of double-barrier S 1IS2FIS3 multi-terminal devices (with S, I, and F denoting a superconductor, an insulator, and a ferromagnetic metal, respectively), whose principle of operation is based on a nonequilibrium superconducting state driven by tunnel injection of quasiparticles. Using the F layer makes the device asymmetric and considerably improves input-output isolation in comparison with the formerly investigated symmetric S 1IS2IS3 devices.

Original languageEnglish (US)
Article number024009
JournalSuperconductor Science and Technology
Volume24
Issue number2
DOIs
StatePublished - Feb 8 2011

ASJC Scopus subject areas

  • Ceramics and Composites
  • Condensed Matter Physics
  • Metals and Alloys
  • Electrical and Electronic Engineering
  • Materials Chemistry

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