2021/06/30 by D. C. Cavanagh, Tatsuya Shishidou, T. Shishidou +3
Materials Science · Physics and Astronomy · #Brillouin zone #Condensed matter physics #Fermi surface #Iron-based superconductors research #Pairing #Physics #Physics of Superconductivity and Magnetism #Rare-earth and actinide compounds #Superconductivity #cond-mat.str-el #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.105.l020505
published as Phys. Rev. B 105, L020505 (2022) · 9 pages, 9 figures
openalex created_date 2021/06/22 · arxiv created 2021/11/18 · openalex publication_date 2022/01/24 · arxiv updated 2022/03/03 · openalex updated_date 2026/08/05
Recently, evidence has emerged for a field-induced even- to odd-parity superconducting phase transition in CeRh2As2 [S. Khim et al., Science 373 1012 (2021)]. Here we argue that the P4/nmm non-symmorphic crystal structure of CeRh2As2 plays a key role in enabling this transition by ensuring large spin-orbit interactions near the Brillouin zone boundaries, which naturally leads to the required near-degeneracy of the even- and odd-parity channels. We further comment on the relevance of our theory to FeSe, which crystallizes in the same structure.