1999/07/22 by D. F. Agterberg, D. F Agterberg, Victor Barzykin +3
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:10.1209/epl/i1999-00503-6
4 pages, no figures
arxiv created 1999/07/22 · openalex publication_date 1999/11/15 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We consider the effect of isotropic impurity scattering on the exotic superconducting states that arise from the usual BCS mechanism in substances of cubic and hexagonal symmetry where the Fermi surface contains inequivalent but degenerate pockets ( e.g. around several points of high symmetry). As examples we look at CeCo 2 , CeRu 2 , and LaB 6 ; all of which have such Fermi surface topologies and the former exhibits unconventional superconducting behavior. We find that while these non s -wave states are suppressed by non-magnetic impurities, the suppression is much weaker than would be expected for unconventional superconductors with isotropic non-magnetic impurity scattering.