The local oxygen density of states of p symmetry at the Fermi level of La 2− x Sr x CuO 4 and
YBa 2 Cu 3 O 7− y has been investigated as a function of x and y. Core-level excitations of …

High-energy electron energy-loss spectroscopy in transmission has been used to obtain
information on the symmetry of unoccupied electronic states in the new high-T c …

We describe valence-band and core-level photoemission data for copper oxide
superconductors using the Anderson Hamiltonian applied to an impurity-cluster …

Electron-energy-loss spectroscopy has been used to investigate the changes of the
electronic structure in Y 1− x Pr x Ba 2 Cu 3 O 7 (0≤ x≤ 1). The O 1s absorption edges and …

This paper highlights the important roles played by crystal chemistry in controlling the
superconductive properties of the intergrowth structures of the copper oxides. Bond-length …

A detailed x-ray absorption study of the oxygen K edge of Y Ba 2 Cu 3 O x is presented. A
preedge peak is observed for all samples with x≥ 6.4 which we argue to be due to holes in …

During the past 30 years materials science has developed into a full-fledged field for basic
and applied scientific enquiry. Indeed, materials scientists have devoted their efforts to …

The oxygen isotope effect was studied in the system (Y 1− x Pr x) Ba 2 Cu 3 O 7− δ for x=
0.2, 0.3, 0.4, and 0.5. It is found that the oxygen isotope exponent α increases with …

Publisher Summary This chapter reviews the electronic structure of the La 2–x M x CuO 4–y
(M= Ba, Sr, Ca) and RBa 2 Cu 3 O 7–δ (R= Y, Eu, Gd,…) systems. Emphasis is placed on …

In order to understand the suppression of superconductivity in Y 1− x Pr x Ba 2 Cu 3 O 7
(0.6≤ x≤ 1.0) and also the electronic properties of the high-T c superconductors R Ba 2 Cu …