This article gives an overview of both theoretical and experimental developments
concerning states with lattice symmetry breaking in the cuprate high-temperature …

Magnetic clusters, ie, assemblies of a finite number (between two or three and several
hundred) of interacting spin centers which are magnetically decoupled from their …

Recent quantum oscillation measurements on underdoped cuprates are shown to be
consistent with the predictions of a mean field theory of the 1∕ 8 magnetic antiphase stripe …

Since their discovery in 1986, the high-temperature copper-oxide superconductors have
been a central object of study in condensed-matter physics. Their highly unusual properties …

Many important questions for high-T c cuprates are closely related to the insulating nature of
parent compounds. While there has been intensive discussion on this issue, all arguments …

We study the electron-phonon interaction in the strongly correlated superconducting
cuprates. Two types of the electron-phonon interactions are introduced in the t− J model; the …

The doping-and temperature-dependent conductivity of electron-doped cuprates is
analyzed. The variation of kinetic energy with doping is shown to imply that the materials are …

The a-axis optical properties of a detwinned single crystal of Y Ba 2 Cu 3 O 6.50 in the ortho-
II phase (Ortho-II Y123, T c= 59 K) were determined from reflectance data over a wide …

We performed the systematic optical and transport experiment for La 2− x Sr x CuO 4 at high
temperatures. The in-plane resistivity ρ ab (T) saturates not at the classical Ioffe-Regel-Mott …

We calculate the Raman response contribution due to soft collective modes, finding a strong
dependence on the photon polarizations and on the characteristic wave vectors of the …