The physics of quantum materials is dictated by many-body interactions and mathematical
concepts such as symmetry and topology that have transformed our understanding of matter …

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 surprising discovery of superconductivity in layered iron-based materials, with transition
temperatures climbing as high as 55 K, has led to thousands of publications on this subject …

We show that electron-and hole-doped BaFe 2 As 2 are strongly influenced by a Mott
insulator that would be realized for half-filled conduction bands. Experiments show that …

Angle resolved photoemission spectroscopy (ARPES) reveals the features of the electronic
structure of quasi-two-dimensional crystals which are crucial for spin and charge ordering …

We review our recent experimental results on the electronic nematic phase in electron-and
hole-doped BaFe 2 As 2 and FeSe. The nematic susceptibility is extracted from shear …

The recent discovery of high-temperature superconductivity in single-layer iron selenide has
generated significant experimental interest for optimizing the superconducting properties of …

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 …

Although the pairing mechanism of Fe-based superconductors (FeSCs) has not yet been
settled with consensus with regard to the pairing symmetry and the superconducting (SC) …

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 …