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 …

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 …

The superconductor iron selenide (FeSe) is of intense interest owing to its unusual
nonmagnetic nematic state and potential for high-temperature superconductivity. But its …

This article reviews the static and dynamic properties of spontaneous superstructures
formed by electrons. Representations of such electronic crystals are charge density waves …

Could it be that the matter from the electrons in high Tc superconductors is of a radically new
kind that may be called" many body entangled compressible quantum matter"? Much of this …

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

It has recently been established that the high-transition-temperature (high-T c)
superconducting state coexists with short-range charge-density-wave order,,,,,,,,,, and …

Topological defects are singularities in an ordered phase that can have a profound effect on
phase transitions and serve as a window into the order parameter. Examples of topological …

States of matter with a sharp Fermi surface but no well-defined Landau quasiparticles arise
in a number of physical systems. Examples include (i) quantum critical points associated …

Superconductivity in so-called unconventional superconductors is nearly always found in
the vicinity of another ordered state, such as antiferromagnetism, charge density wave …