D ec 1 99 6 From microscopic description to statistical mechanics of Cu - O chain fragments in the high - T c superconductors REBa
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چکیده
The oxygen deficient CuOx planes of the high-Tc superconductors REBa2Cu3O6+x (RE denotes a rare-earth atom or yttrium) are studied. Starting from the Emery model for the Cu-O chain fragments, an extended ASYNNNI model is proposed to describe the statistical mechanics of the CuOx planes. The model is analysed by using Monte Carlo techniques, computing especially the charge transfer to the CuO2 planes regulating the high-Tc superconductivity, and the concentration of differently coordinated Cu ions. Results are compared to experimental data for various RE cases.
منابع مشابه
From Microscopic Description to Statistical Mechanics of Cu-o Chain Fragments in the High-t C Superconductors Reba 2 Cu 3 O 6+x
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تاریخ انتشار 1996