Pressure has long been recognized as a fundamental thermodynamic variable but its
application was previously limited by the available pressure vessels and probes. The …

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 …

Fermi systems in the cross-over regime between weakly coupled Bardeen–Cooper–
Schrieffer (BCS) and strongly coupled Bose–Einstein-condensate (BEC) limits are among …

Iron-based superconductors are well known for their complex interplay between structure,
magnetism and superconductivity. FeSe offers a particularly fascinating example. This …

We successfully grew the high-quality single crystal of Rb 0.88 Fe 1.81 Se 2, which shows a
clear superconducting transition in magnetic susceptibility and electrical resistivity …

The role of electronic Coulomb correlations in iron-based superconductors is an important
open question. We provide theoretical evidence for strong correlation effects in FeSe, based …

By realizing in thin films a tensile stress state, superconductivity of 13 K was introduced into
FeTe, a nonsuperconducting parent compound of the iron pnictides and chalcogenides, with …

In this study, we performed high-pressure electrical resistivity measurements of
polycrystalline FeSe in the pressure range of 1–16.0 GPa at temperatures of 4–300 K. A …

The study of the iron-based superconductor FeSe has blossomed with the availability of high-
quality single crystals, obtained through flux/vapor-transport growth techniques below the …

We report measurements of resistance and ac magnetic susceptibility on FeSe single
crystals under high pressure up to 27.2 kbar. The structural phase transition is quickly …