Superconductivity is a remarkably widespread phenomenon that is observed in most metals
cooled to very low temperatures. The ubiquity of such conventional superconductors, and …

High-transition temperature (high-T c) superconductivity in the iron pnictides or
chalcogenides emerges from the suppression of the static antiferromagnetic order in their …

If strong electron-electron interactions between neighboring Fe atoms mediate the Cooper
pairing in iron-pnictide superconductors, then specific and distinct anisotropic …

The present article reviews recent experimental investigations of spin dynamics in iron-
based superconductors and their parent compounds by means of inelastic neutron …

We measured the resistivity and magnetic susceptibility to map out the phase diagram of
single crystalline NaFe 1− x Co x As. Replacement of Fe by Co suppresses both the …

The superconducting compound LiFeAs is studied by scanning tunneling microscopy and
spectroscopy. A gap map of the unreconstructed surface indicates a high degree of …

Based on the dynamical mean field theory and angle resolved photoemission spectroscopy,
we have investigated the mechanism of high T c superconductivity in stoichiometric LiFeAs …

We analyze the structure of the pairing interaction and superconducting gap in LiFeAs by
decomposing the pairing interaction for various kz cuts into s-and d-wave components and …

We report an inelastic neutron scattering study on the spin resonance in the bilayer iron-
based superconductor CaKFe 4 As 4. In contrast to its quasi-two-dimensional electron …

In this article, we review the recent significant progress in the theoretical studies of the
electronic states by mainly focusing on Fe-based and cuprate superconductors. These …