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 …

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

In a series of recent reports, doped lead apatite (LK-99) has been proposed as a candidate
ambient temperature and pressure superconductor. However, from both an experimental …

The observation of metallic ground states in a variety of two-dimensional electronic systems
poses a fundamental challenge for the theory of electron fluids. Here evidence is analyzed …

The enigmatic pseudogap phase in underdoped cuprate high-T c superconductors has long
been recognized as a central puzzle of the T c problem. Recent data show that the …

Cuprates exhibit antiferromagnetic, charge density wave (CDW), and high-temperature
superconducting ground states that can be tuned by means of doping and external magnetic …

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 …

High magnetic fields suppress cuprate superconductivity to reveal an unusual density wave
(DW) state coexisting with unexplained quantum oscillations. Although routinely labeled a …

A recent scanning tunneling microscopy (STM) experiment reports the observation of a
charge-density wave (CDW) with a period of approximately 8a in the halo region …

With the discovery of charge-density waves (CDWs) in most members of the cuprate high-
temperature superconductors, the interplay between superconductivity and CDWs has …