2004/06/30 by I. A. Sergienko, И. В. Сергиенко, S. H. Curnoe · 5 citations
Materials Science · Physics and Astronomy · #Iron-based superconductors research #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.70.214510
published as Phys. Rev. B 70, 214510 (2004) · 8 pages, references updated. Accepted to PRB
arxiv created 2004/10/13 · openalex publication_date 2004/12/07 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
In noncentrosymmetric metals, the spin degeneracy of the electronic bands is lifted by spin-orbit coupling. We consider general symmetry properties of the pairing function \ensuremathΔ(k) in noncentrosymmetric superconductors with spin-orbit coupling (NSC), including CePt3Si, UIr, and Cd2Re2O7. We find that \ensuremathΔ(k)=\ensuremathχ(k)t(k), where \ensuremathχ(k) is an even function which transforms according to the irreducible representations of the crystallographic point group and t(k) is a model-dependent phase factor. We consider tunneling between a NSC and a conventional superconductor. It is found that, in terms of thermodynamical properties as well as the Josephson effect, the state of NSC resembles a singlet superconducting state with gap function \ensuremathχ(k).