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Model of the Electronic Structure of Electron-Doped Iron-Based Superconductors: Evidence for Enhanced Spin Fluctuations by Diagonal Electron Hopping
Katsuhiro Suzuki, Hidetomo Usui, Soshi Iimura +4
We present a theoretical understanding of the superconducting phase diagram of the electron-doped iron pnictides. We show that, besides the Fermi surface nesting, a peculiar motion…
Switching of intra-orbital spin excitations in electron-doped iron pnictide superconductors
Soshi Iimura, Satoru Matsuishi, Masashi Miyakawa +10
We investigate the doping dependence of the magnetic excitations in two-superconducting-dome-system LaFeAsO1-xDx. Using inelastic neutron scattering, spin fluctuations at different…
Understanding the re-entrant superconducting phase diagram of an iron-pnictide CaAlOFe(AsP)
Hidetomo Usui, Katsuhiro Suzuki, Kazuhiko Kuroki +4
Recently, a very rich phase diagram has been obtained for an iron-based superconductor Ca4Al2O6Fe2(As1-xPx)2. It has been revealed that nodeless (x=0) and nodal (x = 1) superconduc…
Robust spin fluctuations and pairing in the heavily electron doped iron-based superconductors
Katsuhiro Suzuki, Hidetomo Usui, Kazuhiko Kuroki +4
We theoretically study the spin fluctuation and superconductivity in La1111 and Sm1111 iron-based superconductors for a wide range of electron doping. When we take into account the…