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 …

We review the physics of pair-density wave (PDW) superconductors. We begin with a
macroscopic description that emphasizes order induced by PDW states, such as charge …

In the last two decades non-equilibrium spectroscopies have evolved from avant-garde
studies to crucial tools for expanding our understanding of the physics of strongly correlated …

Besides superconductivity, copper-oxide high-temperature superconductors are susceptible
to other types of ordering. We used scanning tunneling microscopy and resonant elastic x …

The spectral energy gap is an important signature that defines states of quantum matter:
insulators, density waves and superconductors have very different gap structures. The …

The electronic phase diagrams of many highly correlated systems, and, in particular, the
cuprate high temperature superconductors, are complex, with many different phases …

High-temperature superconductivity in cuprates emerges out of a highly enigmatic
'pseudogap'metal phase. The mechanism of high-temperature superconductivity is probably …

Although the vast majority of high-T c cuprate superconductors are hole-doped, a small
family of electron-doped compounds exists. Underinvestigated until recently, there has been …

Understanding the electron pairing in hole-doped cuprate superconductors has been a
challenge, in particular because the “normal” state from which it evolves is unprecedented …

Upon introducing charge carriers into the copper–oxygen sheets of the enigmatic lamellar
cuprates, the ground state evolves from an insulator to a superconductor and eventually to a …