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 …

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 …

NATURE abounds with phase transitions. The boiling and freezing of water are everyday
examples of phase transitions, as are more exotic processes such as superconductivity and …

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

We review recent experimental and theoretical results on the interaction between single-
particle excitations and collective spin excitations in the superconducting state of high-Tc …

An important feature of the high-transition-temperature (high-T c) copper oxide
superconductors is the magnetism that results from the spins associated with the incomplete …

A scenario is presented, in which the presence of a quantum critical point due to formation of
incommensurate charge density waves accounts for the basic features of the high …

The dynamic spin susceptibility, χ′′(ω), has been measured over the energy range of 2≤
ω≤ 10 meV for overdoped La 2-x Sr x CuO 4. Incommensurate (IC) spin excitations are …

We use inelastic neutron scattering to demonstrate that the low-frequency magnetic
fluctuations in YBa 2 Cu 3 O 6.6 (T c= 62.7 K) change from commensurate to …

A notable aspect of high-temperature superconductivity in the copper oxides is the
unconventional nature of the underlying paired-electron state. A direct manifestation of the …