Josephson effects in unconventional heavy fermion superconductors

S. K. Yip, Y. S. Sun, James A Sauls

Research output: Contribution to journalArticlepeer-review

6 Scopus citations

Abstract

We discuss the Josephson effect for pairing states which break crystal symmetries in addition to gauge symmetry. We consider the E1g and E2u models for the low-temperature phase of UPt3, with order parameters Δ(E1g) ~ pz(px + ipy) and Δ(E2u) ~ pz(px + ipy)2. We report calculations of Josephson critical currents, taking into account the effects of depairing at the interface. For singlet-triplet junctions the critical current is non-zero only for spin-orbit, spin-flip tunneling, and is found to be much smaller than the Ambegaokar-Baratoff value even when the spin-orbit tunneling amplitude is comparable to the spin-independent amplitude.

Original languageEnglish (US)
Pages (from-to)557-558
Number of pages2
JournalCzechoslovak Journal of Physics
Volume46
Issue numberSUPPL. 2
DOIs
StatePublished - Dec 1 1996

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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