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 language | English (US) |
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Pages (from-to) | 293-296 |
Number of pages | 4 |
Journal | Physica C: Superconductivity and its applications |
Volume | 469 |
Issue number | 7-8 |
DOIs | |
State | Published - 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