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 …

Superconductivity is a remarkably widespread phenomenon that is observed in most metals
cooled to very low temperatures. The ubiquity of such conventional superconductors, and …

Electronic nematicity, in which rotational symmetry is spontaneously broken by electronic
degrees of freedom, has been demonstrated as a ubiquitous phenomenon in correlated …

CsV 3 Sb 5 is a newly discovered Z 2 topological kagome metal showing the coexistence of
a charge-density-wave (CDW)-like order at T*= 94 K and superconductivity (SC) at T c= 2.5 …

Strongly interacting electrons in solid-state systems often display multiple broken
symmetries in the ground state. The interplay between different order parameters can give …

Mechanical deformation of a crystal can have a profound effect on its physical properties.
Notably, even small modifications of bond geometry can completely change the size and …

The search for quantum states arising from the interplay between correlation, frustration and
topology is a central topic for condensed-matter physics. Recently discovered non-magnetic …

Superconductivity develops in metals upon the formation of a coherent macroscopic
quantum state of electron pairs. Iron pnictides and chalcogenides are materials that have …

Although the existence of nematic order in iron-based superconductors is now a well-
established experimental fact, its origin remains controversial. Nematic order breaks the …

We present a comprehensive study of the evolution of the nematic electronic structure of
FeSe using high-resolution angle-resolved photoemission spectroscopy (ARPES), quantum …