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 …

The Horace suite of programs has been developed to work with large multiple-measurement
data sets collected from time-of-flight neutron spectrometers equipped with arrays of position …

In the search for the mechanism of high-temperature superconductivity, intense research
has been focused on the evolution of the spin excitation spectrum on doping from the …

Upon doping, Mott insulators often exhibit symmetry breaking where charge carriers and
their spins organize into patterns known as stripes. For high–transition temperature cuprate …

One of the most intensely studied scenarios of high-temperature superconductivity (HTS)
postulates pairing by exchange of magnetic excitations. Indeed, such excitations have been …

We review the intermediate coupling model for treating electronic correlations in the
cuprates. Spectral signatures of the intermediate coupling scenario are identified and used …

We study the phase diagram of the Hubbard model in the limit where U, the onsite repulsive
interaction, is much smaller than the bandwidth. We present an asymptotically exact …

Doped Mott insulators have a strong propensity to form patterns of holes and spins often
referred to as stripes,,,,. In copper oxides, doping also gives rise to the pseudogap state …

Neutron scattering experiments continue to improve our knowledge of spin fluctuations in
layered cuprates, excitations that are symptomatic of the electronic correlations underlying …

In the local or itinerant extreme, magnetic excitations can be described by the Heisenberg
model which treats electron spins as localized moments, or by the itinerant-electron model …