The iron-based superconductors that contain FeAs layers as the fundamental building block
in the crystal structures have been rationalized in the past using ideas based on the Fermi …

The discovery of iron based superconductors in early 2008 stimulated the interest of
researchers around the globe, including physicists, chemists and materials scientists …

The diversities in crystal structures and ways of do** result in extremely diversified phase
diagrams for iron-based superconductors. With angle-resolved photoemission spectroscopy …

We have studied the low-energy spin-excitation spectrum of the single-crystalline Rb 2 Fe 4
Se 5 superconductor (T c= 32 K) by means of inelastic neutron scattering. In the …

We report an in-plane optical spectroscopy study on the iron-selenide superconductor K0.
75Fe1. 75Se2. The measurement revealed the development of a sharp reflectance edge …

Using self-consistent mean-field and functional renormalization-group approaches, we show
that s-wave pairing symmetry is robust in the heavily electron-doped iron chalcogenides A …

Although a nodeless superconducting gap has been observed on the large Fermi pockets
around the zone corner in K x Fe 2− y Se 2, whether its pairing symmetry is s wave or …

Inelastic neutron scattering is employed to study the reciprocal-space structure and
dispersion of magnetic excitations in the normal and superconducting states of single …

Magnetic field penetration and magnetization hysteresis loops (MHLs) have been measured
in K x Fe 2− y Se 2 single crystals. The magnetic field penetration shows a two-step feature …

We report synthesis, crystal structure, and superconductivity in ThCr2Si2-type LaFe2As2
(La122). La122 was synthesized at 960° C for 1.5 h under a pressure of 3.4 GPa. An as …