Superconductivity develops in metals upon the formation of a coherent macroscopic
quantum state of electron pairs. Iron pnictides and chalcogenides are materials that have …

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

Single-crystal neutron diffraction studies on superconductors A 2 Fe 4 Se 5, where A= Rb,
Cs,(Tl, Rb), and (Tl, K)(T c∼ 30 K), uncover the same Fe vacancy ordered crystal structure …

The nature of the parent compound of a high-temperature superconductor (HTS) often plays
a pivotal role in determining its superconductivity. The parent compounds of the cuprate …

AU (1) slave-spin representation is introduced for multiorbital Hubbard models. As with the Z
2 form of de'Medici et al.[Phys. Rev. B 72, 205124 (2005) PRBMDO 1098-0121 …

In this review, we present a summary of results on single crystal growth of two types of iron-
chalcogenide superconductors, Fe 1+ y Te 1− x Se x (11), and A x Fe 2− y Se 2 (A= K, Rb …

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 …

The parent compounds of iron pnictide superconductors are bad metals with a collinear
antiferromagnetic structure and Néel temperatures below 220 K. Although alkaline iron …

The orbital-selective Mott phase of multiorbital Hubbard models has been extensively
analyzed before using static and dynamical mean-field approximations. In parallel, the …