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 …

Emergent electronic phenomena in iron-based superconductors have been at the forefront
of condensed matter physics for more than a decade. Much has been learned about the …

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

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 …

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

The mechanism behind the nematicity of FeSe is not known. Through elastoresitivity
measurements it has been shown to be an electronic instability. However, thus far …

Nematicity is ubiquitous in the electronic phases of iron-based superconductors. The order
parameter that characterizes the nematic phase has been investigated in momentum space …

The origin of spontaneous electronic nematic ordering provides important information for
understanding iron-based superconductors. Here, we analyze a scenario where the dxy …

Iron‐based superconductors are well‐known for their intriguing phase diagrams, which
manifest a complex interplay of electronic, magnetic, and structural degrees of freedom …

We measure the electronic structure of FeSe from within individual orthorhombic domains.
Enabled by an angle-resolved photoemission spectroscopy beamline with a highly focused …