The present article reviews recent experimental investigations of spin dynamics in iron-
based superconductors and their parent compounds by means of inelastic neutron …

Disorder—impurities and defects violating the ideal long-range order—is always present in
solids. It can result in interesting and sometimes unexpected effects in multiband …

A comprehensive study of superconductor-constriction-superconductor contacts, obtained
using the “break-junction” technique in layered superconductors. Depending on the …

We present a study of the superconducting order parameter in slightly overdoped alkali-
metal-based pnictides NaFe\(_ {0.955}\) Co\(_ {0.045}\) As with\(T_c\approx 21\) K using a …

The review is focused on one of the most exotic families of iron-based superconductors
belonging to the AFeAs structural class, where A is an alkali metal. We briefly concern …

We study the spin resonance in the superconducting state of iron-based materials within
multiband models with two unequal gaps, Δ L and Δ S, on different Fermi-surface pockets …

Spin resonance in the superconducting state of Fe-based materials within the multiorbital
model with unequal anisotropic gaps on different Fermi surface sheets is studied. On the …

We discuss the synthesis, characterization, and comprehensive study of Ba-122 single
crystals with various substitutions and various superconducting transition temperatures. We …

Vanadium-based topological kagome metals AV 3 Sb 5 (A= K, Rb, Cs) have drawn great
attention recently due to the discoveries of charge order, nematic phase, time-reversal …

Quasiparticle excitations provide viable information on the physics of unconventional
superconductors. Higgs and Leggett modes are some of the classic examples. Another …