2018/12/28 by Yi Gao, Yuting Wang, Yu‐Ting Wang +3 · 9 citations
Materials Science · Physics and Astronomy · #Computer science #Condensed matter physics #Fermi Gamma-ray Space Telescope #Interference (communication) #Iron-based superconductors research #Momentum (technical analysis) #Pairing #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Quasiparticle #Superconductivity #Superconductivity in MgB2 and Alloys #Symmetry (geometry) #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevlett.121.267005
published in Physical Review Letters 121(26), 267005 (American Physical Society)
openalex publication_date 2018/12/28 · arxiv created 2018/12/29 · arxiv updated 2019/01/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
We study the momentum-integrated quasiparticle interference (QPI) in the FeSe-based superconductors. This method was recently proposed theoretically and has been applied to determine the pairing symmetry in these materials experimentally. Our findings suggest that, if the incipient bands and the superconducting (SC) pairing on them are taken into consideration, then the experimentally measured bound states and momentum-integrated QPI can be well fitted, even if the SC order parameter does not change sign on the Fermi surfaces. Therefore, we offer an alternative explanation to the experimental data, calling for more careful identification of the pairing symmetry that is important for the pairing mechanism.