Kamihara and coworkers' report of superconductivity at T c= 26 K in fluorine-doped
LaFeAsO inspired a worldwide effort to understand the nature of the superconductivity in this …

This review shows the highlights of a 4-year-long research project supported by the
Japanese Government to explore new superconducting materials and relevant functional …

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

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 …

New iron selenide superconductors by intercalating smaller-sized alkali metals (Li, Na) and
alkaline earths using high-temperature routes have been pursued ever since the discovery …

The discovery of cuprate high TC superconductors has inspired the search for
unconventional superconductors in magnetic materials. A successful recipe has been to …

The newly discovered alkali-doped iron selenide superconductors, not only reach a
superconducting transition temperature as high as 32 K, but also exhibit unique …

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 …

Advanced synchrotron radiation focusing down to a size of 300 nm has been used to
visualize nanoscale phase separation in the K 0.8 Fe 1.6 Se 2 superconducting system …

We perform realistic first-principles calculations of iron chalcogenides and ruthenate-based
materials to identify experimental signatures of Hund's-coupling-induced correlations in …