Characteristics of CeCoIn5/Al/AlOx/Nb and CeCoIn5/Al/AlOx/Al tunnel junctions

I. P. Nevirkovets*, O. Chernyashevskyy, C. Petrovic, Rongwei Hu, J. B. Ketterson, Bimal K. Sarma

*Corresponding author for this work

Research output: Contribution to journalArticle

Abstract

We report characteristics of CeCoIn5/Al/AlOx/Nb and CeCoIn5/Al/AlOx/Al tunnel junctions fabricated on the (0 0 1) surface of CeCoIn5 crystal platelets. The main result of this work is the observation of a low Josephson current (as compared with that expected from the Ambegaokar-Baratoff formula), which is consistent with idea that the order parameter in the heavy-fermion superconductor CeCoIn5 has unconventional pairing symmetry.

Original languageEnglish (US)
Pages (from-to)293-296
Number of pages4
JournalPhysica C: Superconductivity and its applications
Volume469
Issue number7-8
DOIs
StatePublished - Apr 1 2009

Keywords

  • Heavy-fermions
  • Josephson effect
  • Proximity effect
  • Superconductivity
  • Tunnel junctions
  • Tunneling

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Energy Engineering and Power Technology
  • Electrical and Electronic Engineering

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