2014/11/30 by Yan Wang, Y. Wang, T. Berlijn +5 · 2 citations
Materials Science · Physics and Astronomy · #Atomic orbital #Condensed matter physics #Electron #Iron-based superconductors research #Mirror symmetry #Observable #Pairing #Parity (physics) #Physics #Physics of Superconductivity and Magnetism #Pnictogen #Quantum mechanics #Rare-earth and actinide compounds #Reflection symmetry #Superconductivity #Symmetry (geometry) #Symmetry breaking #T-symmetry #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.114.107002
published as Phys. Rev. Lett. 114, 107002 (2015) · 8 pages, 7 figures
openalex publication_date 2015/03/10 · arxiv created 2015/03/11 · arxiv updated 2015/03/12 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We consider the effect of glide-plane symmetry of the Fe-pnictogen/chalcogen layer in Fe-based superconductors on pairing in spin fluctuation models. Recent theories have proposed that so-called η-pairing states with nonzero total momentum can be realized and possess exotic properties such as odd parity spin singlet symmetry and time-reversal symmetry breaking. Here we show that η pairing is inevitable when there is orbital weight at the Fermi level from orbitals with even and odd mirror reflection symmetry in z; however, by explicit calculation, we conclude that the gap function that appears in observable quantities is identical to that found in earlier, 1 Fe per unit cell pseudocrystal momentum calculations.