Triplet superconductors: Josephson effect in quasi-one-dimensional systems

We show that the Josephson effect between triplet superconductors is sensitive to the relative orientation of the d-vectors across the junction. In addition, we point out that the temperature, angular and magnetic field dependencies of the Josephson effect can help distinguish between different orde...

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Bibliographic Details
Published in:Physica. C, Superconductivity Superconductivity, 2003-08, Vol.391 (1), p.89-97
Main Authors: Vaccarella, C.D, Duncan, R.D, Sá de Melo, C.A.R
Format: Article
Language:English
Subjects:
Bechgaard salts
Josephson effect
Organic superconductors
Quasi-one-dimensional
Triplet superconductors
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Summary:We show that the Josephson effect between triplet superconductors is sensitive to the relative orientation of the d-vectors across the junction. In addition, we point out that the temperature, angular and magnetic field dependencies of the Josephson effect can help distinguish between different order parameter symmetries. We discuss coherent and incoherent tunneling processes, and the role of surface bound states within the framework of non-local lattice Bogoliubov–de Gennes equations. We analyse several weak spin–orbit coupling order parameters candidates (p x , p y , p z and f xyz ) for quasi-one-dimensional superconductors and discuss the connection with very recent bicrystal junction experiments, where the I– V characteristics and differential conductance were measured.
ISSN:0921-4534
1873-2143
DOI:10.1016/S0921-4534(03)00872-4