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 present article reviews recent experimental investigations of spin dynamics in iron-
based superconductors and their parent compounds by means of inelastic neutron …

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

Superconductivity in the iron pnictides is often closely connected to a nematic state in which
the tetragonal symmetry of the crystal is spontaneously broken. Determining the dominant …

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 …

We study the symmetry of spin excitation spectra in 122-ferropnictide superconductors by
comparing the results of first-principles calculations with inelastic neutron-scattering (INS) …

Quantum materials are usually heterogeneous, with structural defects, impurities, surfaces,
edges, interfaces, and disorder. These heterogeneities are sometimes viewed as liabilities …

Unconventional superconductivity often intertwines with various forms of order, such as the
nematic order which breaks the rotational symmetry of the lattice. Here we report a scanning …

We examine the competition of the observed stripe spin density wave (SDW) with other
commensurate and incommensurate SDW phases in a two-band model of the pnictides …

We investigate the quasiparticle interference in the heavy fermion superconductor CeCoIn 5
as a direct method to confirm the d-wave gap symmetry. The ambiguity between dxy and dx …