We have developed a constrained-occupation local-density-functional technique to
calculate individual model Hamiltonian parameters for states of arbitrary localization. The …

O1s and Cu2p absorption edges of cuprate high-T c superconductors (HTSC) and related
compounds measured by electron energy-loss spectroscopy (EELS) and X-ray absorption …

Realistic U=∞ models, for oxide superconductors are solved in slave-boson mean-field
approximation. A successful understanding is achieved of the paramagnetic susceptibility …

We review analytical and numerical results derived from the Bethe ansatz solution of the n-
channel Kondo model of arbitrary spin S as a function of temperature, external field, impurity …

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 …

The temperature (T) and voltage (V) dependence of conductance signals in metal point
contacts, previously asserted to be due to 2-channel Kondo scattering from atomic 2 level …

It has long been argued that the minimal model to describe the low-energy physics of the
high T c superconducting cuprates must include copper states of other symmetries besides …

We discuss a few possibilities of high-T c superconductivity with more than one orbital
symmetry contributing to the pairing. First, we show that the high energies of orbital …

Certain zero-bias anomalies (ZBAs) in the voltage, temperature and magnetic field
dependence of the conductanceG (V, T, H) of quenched Cu point contacts have previously …

We have performed full-scale numerical-renormalization-group calculations on the
anisotropic, two-channel, impurity spin s= 1/2 Kondo Hamiltonian. To allow for anisotropy we …