The discovery in February 2008 of superconductivity with the transition temperature about
26 K in fluorine-doped oxyarsenide LaO 1–x F x FeAs stimulated numerous studies of …

Superconductivity in the iron pnictides and chalcogenides arises at the border of
antiferromagnetism, which raises the question of the role of quantum criticality. In this topical …

We have studied EuFe 2 (As 0.7 P 0.3) 2 by the measurements of x-ray diffraction, electrical
resistivity, thermopower, magnetic susceptibility, magnetoresistance, and specific heat …

We report intrinsic transport and magnetic properties and their anisotropy in high-quality
single-crystal CaFe 2 As 2. The resistivity anisotropy (ρ c/ρ ab) is∼ 50, less than the 150 of …

EuFe 2 As 2 shows a spin-density wave (SDW) type transition at 190 K and
antiferromagnetic (AF) order below 20 K. Here, we have studied the effect of K substitution …

We use resonant elastic x-ray scattering to determine the evolution of magnetic order in
EuCd 2 As 2 below TN= 9.5 K, as a function of temperature and applied magnetic field. We …

Among various parent compounds of iron pnictide superconductors, EuFe 2 As 2 stands out
due to the presence of both spin density wave of Fe and antiferromagnetic (AFM) ordering of …

The occurrence of bulk superconductivity at∼ 22 K is reported in polycrystalline samples of
BaFe 2− x Ru x As 2 for nominal Ru content in the range of x= 0.75–1.125. A systematic …

Neutron diffraction measurements have been performed on a powder sample of BaMn 2 As
2 over the temperature T range from 10 to 675 K. These measurements demonstrate that this …

We discover a robust coexistence of superconductivity and ferromagnetism in an iron
arsenide RbEuFe 4 As 4. The new material crystallizes in an intergrowth structure of RbFe 2 …