Traditionally, the primary field, where curvature has been at the heart of research, is the
theory of general relativity. In recent studies, however, the impact of curvilinear geometry …

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 …

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 …

In the first three years since the discovery of Fe-based high T c superconductors, scanning
tunneling microscopy (STM) and spectroscopy have shed light on three important questions …

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 …

The ubiquitous coexistence of majority insulating 245 phases and minority superconducting
(SC) phases in A x Fe2–y Se2 (A= K, Cs, Rb, Tl/Rb, Tl/K) formed by high-temperature routes …

The nature of the parent compound of a high-temperature superconductor (HTS) often plays
a pivotal role in determining its superconductivity. The parent compounds of the cuprate …

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 …

The correlation and competition between antiferromagnetism and superconductivity are one
of the most fundamental issues in high temperature superconductors. Superconductivity in …