The response of the worldwide scientific community to the discovery in 2008 of
superconductivity at T c= 26 K in the Fe-based compound LaFeAsO1− x F x has been very …

The term'high-temperature superconductor'used to refer only to copper-based compounds—
now, iron-based pnictides have entered the frame. The comparison of these two types of …

We used angle-resolved photoemission spectroscopy to reveal directly the momentum
distribution of the superconducting gap in FeTe 1− x Se x, which has the simplest structure of …

Illumination of light on matter normally causes heating and destroys the ordered ground
states. Despite this common understanding, recent advances in ultrafast light sources have …

We investigate the temperature dependence of the lower critical field H c 1 (T) of a high-
quality FeSe single crystal under static magnetic fields H parallel to the c axis. The …

The comprehensive low-temperature specific-heat C (T) data identify both an isotropic s-
wave and extended s-wave order parameters coexisting in a superconducting single-crystal …

Superconductors are classified by their pairing mechanism and the coupling strength,
measured as the ratio of the energy gap, 2 Δ, to the critical temperature, T c. We present an …

In this review, we present a summary of results on single crystal growth of two types of iron-
chalcogenide superconductors, Fe 1+ y Te 1− x Se x (11), and A x Fe 2− y Se 2 (A= K, Rb …

Since the discovery by the author and collaborators of superconductivity in the first truly
layered compound, TaS2 (pyridine) 1/2, there have been many types of layered …

We have investigated the temperature dependence of the upper critical field H c 2 (T) in a
LiFeAs single crystal by direct measurements of resistivity under static magnetic fields up to …