Cuprates exhibit exceptionally strong superconductivity. To understand why, it is essential to
elucidate the nature of the electronic interactions that cause pairing. Superconductivity …

The structures, the phase diagrams, and the appearance of a neutron resonance signaling
an unconventional superconducting state provide phenomenological evidence relating the …

Superconductivity often emerges in the proximity of, or in competition with, symmetry-
breaking ground states such as antiferromagnetism or charge density waves,,,,(CDW). A …

X-ray techniques have been used for more than a century to study the atomic and electronic
structure in practically any type of material. The advent of correlated electron systems, in …

Electronic charges introduced in copper-oxide (CuO2) planes generate high-transition-
temperature (T c) superconductivity but, under special circumstances, they can also order …

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

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 …

Charge density wave (CDW) correlations have been shown to universally exist in cuprate
superconductors. However, their nature at high fields inferred from nuclear magnetic …

The nature of the pseudogap phase is a central problem in the effort to understand the high-
transition-temperature (high-T c) copper oxide superconductors. A fundamental question is …

The origin of the exceptionally strong superconductivity of cuprates remains a subject of
debate after more than two decades of investigation. Here we follow a new lead: The onset …