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

Emergent electronic phenomena in iron-based superconductors have been at the forefront
of condensed matter physics for more than a decade. Much has been learned about the …

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 …

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

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 …

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 …

Angle resolved photoemission spectroscopy (ARPES) reveals the features of the electronic
structure of quasi-two-dimensional crystals which are crucial for spin and charge ordering …

The heavy-fermion metal CeCu 2 Si 2 was the first discovered unconventional, non-phonon-
mediated superconductor and, for a long time, was believed to exhibit single-band d-wave …

In several families of iron-based superconducting materials, ad-wave pairing instability may
compete with the leading s-wave instability. Here, we show that when both states have …

An important challenge in condensed matter physics is understanding iron-based
superconductors. Among these systems, the iron selenides hold the record for highest …