Polar Jahn-Teller Centers and Isotope Effect in Copper Oxide high-T_c-Superconductors
Abstract
The
Cu
O
4
-cluster based copper oxides are considered as generalized quantum lattice bose-gas or a system of the local singlet bosons moving in a lattice of the hole Jahn-Teller centers
[Cu
O
5−
4
]
JT
. The model is illustrated by the qualitative and quantitative description of the various peculiarities of an isotope shift (IS-) effect in a series of 123-like oxides.