抄録 The dynamical spin susceptibility χ (q, ω), of the tJ model in two-dimensional square
lattice have been studied based on the mean field approximation to the slave-boson …

The electronic structure of the high-T c superconductors R 2− x M x CuO 4− δ (R= Pr, Nd,
Sm; M= Ce, Th) and Nd 2 CuO 3.8 F 0.2 has been studied by high-energy electron-energy …

Applying angle-resolved photoemission spectroscopy of high angular and energy resolution
we have measured the electronic structure of single crystals of Bi 2 Sr 2 CaCu 2 O 8 near the …

A bibliography of papers on high energy spectroscopic studies of the new superconductors
is given, together with some selected work on related oxides. Tables are given to allow quick …

We have performed photoemission studies on high-quality Bi 2 Sr 2 CaCu 2 O 8+ δ samples
with various δ. Our results show a clear chemical-potential shift (0.15–0.2 eV) as a function …

The temperature dependence of optical absorption spectra in the visible range has been
measured between 60 and 180 K on superconducting, single-crystalline films of YBa 2 Cu 3 …

抄録 By applying the holon-doublon formalism to a highly correlated system consisting of d-
and p-electrons, a theory is developed concerning whether a superconductive phase can be …

Taking advantage of the linear polarisation of synchrotron radiation, the polarisation
dependence of the OK and Cu L 3 X-ray absorption edges has been compared for in situ …

The Green's function method is applied to the calculation of the low energy spectrum in
layered cuprates using Hubbard projection operators. Hund's and Kondo-like exchange …

Polarization-dependent x-ray-absorption spectroscopy at the Cu L 3 and Ce M 4, 5 edges
has been performed on epitaxial films of Nd 1.85 Ce 0.15 CuO 4− δ vs defect concentration …