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 …

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

Starting from a microscopic itinerant model, we derive and analyze the effective low-energy
model for collective magnetic excitations in the iron pnictides. We show that the stripe …

Magnetism and nematic order are the two nonsuperconducting orders observed in iron-
based superconductors. To elucidate the interplay between them and ultimately unveil the …

The parent phases of the Fe-arsenide superconductors harbor an antiferromagnetic ground
state. Significantly, the Néel transition is either preceded or accompanied by a structural …

We report the results of a systematic investigation of the phase diagram of the iron-based
superconductor Ba 1− x K x Fe 2 As 2 from x= 0 to x= 1.0 using high-resolution neutron and …

We consider a model of multiband superconductivity, inspired by iron pnictides, in which
three bands are connected via repulsive pair-scattering terms. Generically, three distinct …

Discovery of the new materials raised researchers' hopes of solving the riddle of high-
temperature superconductivity. But the unexpectedly diverse systems turned out to possess …

We analyze the evolution of the superconducting gap structure in strongly hole-doped Ba 1−
x K x Fe 2 As 2 between x= 1 and x∼ 0.4 (optimal do**). In the latter case, the pairing …

We construct the symmetry adapted low-energy effective Hamiltonian for the electronic
states in the vicinity of the Fermi level in iron-based superconductors. We use Luttinger's …