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VOLUME 58 | ISSUE 5 | PAGE 345
Pseudo-Jahn-Teller mechanism for the formation of a highly correlated Bose system in atomic clusters: The problem of high-Tc superconductivity
Under certain conditions, the transition of atomic Af-clusters to polar configurations, Μ -» Μ*, may be accompanied by a transition from a weak pseudo-Jahn-Teller effect to a strong one and by the formation of [M]fT vibron centers which differ by an 5-boson: two electrons which are paired by an interaction with an vibron center and which form a completely filled shell. Hole (or electron) doping or photoexcitation of the lattice of M-clusters leads to the formation of seeds of a new phase: a system of [M]jj and [M]jj centers or an s-boson liquid in a reservoir of [M]jx vibron centers. The copper-oxygen high- superconductors are discussed as an example of such a system.




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