Resonant inelastic X-ray scattering (RIXS) is a powerful technique that combines
spectroscopy and inelastic scattering to probe the electronic structure of materials. RIXS is …

The spontaneous reduction of rotational symmetry in a crystalline solid driven by an
electronic mechanism is referred to as electronic nematicity. This phenomenon—initially …

The origin of nematicity in FeSe remains a critical outstanding question towards
understanding unconventional superconductivity in proximity to nematic order. To …

Electronic nematicity, where strong correlations drive electrons to align in a way that lowers
the crystal symmetry, is ubiquitous among unconventional superconductors. Understanding …

Static stripe order is detrimental to superconductivity. Yet, it has been proposed that
transverse stripe fluctuations may enhance the inter-stripe Josephson coupling and thus …

We use resonant inelastic x-ray scattering (RIXS) at the Fe-L 3 edge to study the spin
excitations of uniaxial-strained and unstrained FeSe 1-x S x (0≤ x≤ 0.21) samples. The …

Uniaxial strain is a powerful tuning parameter that can control symmetry and anisotropic
electronic properties in iron-based superconductors. However, accurately characterizing …

We show, by means of dynamical mean-field theory calculations, that the experimental
fingerprints of the nematic order in iron-based superconductors are intrinsically connected …

There has been controversy about the driving force of the nematic order in the FeSe
superconductor. Here, we present a detailed study of the 57 Fe Mössbauer spectra of FeSe …

The superconducting critical temperature T c of intercalated iron-selenide superconductor
(Li, Fe) OHFeSe (FeSe11111) can be increased to 42 from 8 K of bulk FeSe. It shows …