A cell-perturbation method is developed for CuO 2 planes in the cuprate superconductors
described by a dp model. It is shown that a single-band t-t'-J-J'model accurately describes …

Many experimental findings in the materials family of cuprate superconductors are
converging towards an electronic picture which involves strong local Coulomb correlations …

Motivated by the recent discovery of superconductivity in doped NdNiO 2, we study the
magnetic exchange interaction J in layered d 9 nickelates from first principles. The mother …

Abstract In doped Mott-Hubbard insulators, the electron-phonon interaction and strong
Coulomb repulsion can reinforce each other to stabilize small polarons, domain walls, and …

Using strong-coupling perturbation theory for the Hubbard model, explicit expressions are
obtained for the integrated weights, energy positions, and widths of the upper and lower …

We use the local-density approximation in combination with the dynamical mean-field theory
to carry out a comparative investigation of a typical electron-doped and a typical hole-doped …

An effective single-band model for the cuprates is derived by a cell-perturbation method from
a five-band model which includes d 3 z 2− r 2 orbitals on copper and pz orbitals on apical …

We study electronic structure of hole-and electron-doped Mott insulators in the two-
dimensional Hubbard model to reach a unified picture for the normal state of cuprate high-T …

We use resonant inelastic x-ray scattering (RIXS) at the OK-and Cu K-edges to investigate
the doping dependence and temperature dependence of low-energy plasmon excitations in …

One of the major themes in correlated electron physics over the last quarter century has
been the problem of high-temperature superconductivity in hole-doped copper-oxide …