High-temperature superconductivity and a wide variety of exotic superconducting states
discovered in FeSe-based materials have been at the frontier of research on condensed …

The development of sensible microscopic models is essential to elucidate the normal-state
and superconducting properties of the iron-based superconductors. Because these …

Almost a decade has passed since the serendipitous discovery of the iron-based high
temperature superconductors (FeSCs) in 2008. The fact that, as in the copper oxide high …

Superconductivity emerges in proximity to a nematic phase in most iron-based
superconductors. It is therefore important to understand the impact of nematicity on the …

We report the temperature evolution of the detailed electronic band structure in FeSe single
crystals measured by angle-resolved photoemission spectroscopy (ARPES), including the …

A large anisotropy in the electronic properties across a structural transition in several
correlated systems has been identified as the key manifestation of electronic nematic order …

We review the recent developments in electronic Raman scattering measurements of charge
nematic fluctuations in iron-based superconductors. A simple theoretical framework of a d …

The spontaneous appearance of nematicity, a state of matter that breaks rotation but not
translation symmetry, is one of the most intriguing properties of the iron-based …

The iron-based superconductors are characterized by multiple-orbital physics where all the
five Fe 3 d orbitals get involved. The multiple-orbital nature gives rise to various novel …

Despite having the simplest atomic structure, bulk FeSe has an observed electronic structure
with the largest deviation from the band theory predictions among all Fe-based …