We report peculiar momentum-dependent anisotropy in the superconducting gap observed by angle-resolved photoemission spectroscopy in BaFe2(As1-xPx)2 (x = 0.30, Tc = 30 K). Strongly anisotropic gap has been found only in ...

In Fe-based superconductors, electron doping is often realized by the substitution of transition-metal atoms for Fe. In order to investigate how the electronic structure of the parent compound is influenced by Zn substitution, ...

The nature of the pseudogap (PG) in high transition temperature (high 𝑇𝑐) superconducting cuprates has been a major issue in condensed matter physics. It is still unclear whether the high 𝑇𝑐 superconductivity can be ...