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 …

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

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

Strong optical pulses at mid-infrared and terahertz frequencies have recently emerged as
powerful tools to manipulate and control the solid state and especially complex condensed …

Recent advances in laser technology have made it possible to generate of precisely shaped
strong-field pulses at terahertz frequencies. These pulses are especially useful to selectively …

High-temperature superconductivity, with transition temperatures up to≈ 134 K at ambient
pressure, occurs in layered cuprate compounds. The conducting CuO2 planes, which are …

A recent experiment has unveiled an anomalously strong electron-electron attraction in the
one-dimensional copper-oxide chain Ba 2− x Sr x CuO 3+ δ. While the effect of the near …

We show that superconducting interlayer coupling, which coexists with and is depressed by
stripe order in La 1.885 Ba 0.115 CuO 4, can be enhanced by excitation with near-infrared …

Although charge density waves (CDWs) are omnipresent in cuprate high-temperature
superconductors, they occur at significantly different wave vectors, confounding efforts to …