Metal-insulator transitions are accompanied by huge resistivity changes, even over tens of
orders of magnitude, and are widely observed in condensed-matter systems. This article …

The last decade witnessed significant progress in angle-resolved photoemission
spectroscopy (ARPES) and its applications. Today, ARPES experiments with 2-meV energy …

We present an experimental review of the nature of the pseudogap in the cuprate
superconductors. Evidence from various experimental techniques points to a common …

This article discusses fluctuating order in a quantum disordered phase proximate to a
quantum critical point, with particular emphasis on fluctuating stripe order. Optimal strategies …

The character of the ground state of an antiferromagnetic insulator is fundamentally altered
following addition of even a small amount of charge. The added charge is concentrated into …

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 …

The authors review the results of a wide variety of experiments on materials such as La 2
CuO 4 and Nd 2 CuO 4 that contain weakly coupled CuO 2 layers. These materials are …

Systematic low-energy neutron-scattering studies have been performed on float-zone-grown
single crystals of La 2− x Sr x CuO 4 with x extending from zero do**, x= 0, to the …

Previously we have presented evidence for stripe order of holes and spins in La 1. 6− x Nd
0.4 Sr x CuO 4 with x= 0.12. Here we show, via neutron diffraction measurements of …

When holes are doped into an antiferromagnetic insulator they form a slowly fluctuating
array of “topological defects”(metallic stripes) in which the motion of the holes exhibits a self …