Spectroscopy in Superconductors

In this book it has been discussed that the two different methods of lattice dynamics and normal coordinate analysis of a variety of high temperature superconductors. The aim was to provide, in the absence of detailed experimental phonon information on which to base the dynamical models, a sufficiently general and realistic description of the lattice dynamics of these compound to be of use for the prediction and assignment of experimental optic modes and to give a first idea of various phonon properties, such as phonon dispersion curves, phonon densities of states and lattice specific heat. Due to lack of direct experimental input information about the dynamics of high to compounds.