Since the discovery of high T c iron-based superconductors in early 2008, more than 15,000
papers have been published as a result of intensive research. This paper describes the …

The response of the worldwide scientific community to the discovery in 2008 of
superconductivity at T c= 26 K in the Fe-based compound LaFeAsO1− x F x has been very …

The superconductivity of a kagome superconductor CsV 3 Sb 5 is studied by scanning
tunneling microscopy and spectroscopy at ultralow temperature with high resolution. Two …

The recently discovered Fe-pnictide and chalcogenide superconductors display low-
temperature properties suggesting superconducting gap structures which appear to vary …

I review recent works on the symmetry and the structure of the superconducting gap in Fe-
based superconductors (FeSCs) and on the underlying pairing mechanism in these …

In iron pnictides, we find that the moderate electron-phonon interaction due to the Fe-ion
oscillation can induce the critical d-orbital fluctuations, without being prohibited by the …

The normal-state charge transport is studied systematically in high-quality single crystals of
BaFe 2 (As 1− x P x) 2 (0≤ x≤ 0.71). By substituting isovalent P for As, the spin-density …

Epitaxial engineering of solid state heterointerfaces is a leading avenue to realizing
enhanced or novel electronic states of matter. As a recent example, bulk FeSe is an …

I review theoretical ideas and implications of experiments for the gap structure and symmetry
of the Fe-based superconductors. Unlike any other class of unconventional …

Effective low-energy Hamiltonians for several different families of iron-based
superconductors are compared after deriving them from the downfolding scheme based on …