ELECTRON PAIRING MECHANISM IN INCIPIENT FERROELECTRIC BAPB1-XBIXO3

被引：7

作者：

BUSSMANNHOLDER, A ^{[1
]}

BUTTNER, H ^{[1
]}

SIMON, A ^{[1
]}

WAAS, V ^{[1
]}

机构：

[1] MAX PLANCK INST FESTKORPERFORSCH, W-7000 STUTTGART 80, GERMANY

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1990年 / 79卷 / 03期

关键词：

D O I：

10.1007/BF01437656

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The lattice dynamical properties of BaPb1-xBixO3 are described within the polarizability model for perovskite oxides, but extended to take into account the valence instability of Bi. In a quantitative investigation it is found that a mode softening to a ferroelectric state is excluded, but a transition to a paired electron state is possible. The transformation of the classical Hamiltonian to its quantum-mechanical equivalent shows the parameter regimes for which pairing of electrons and thus possibly superconductivity occur. © 1990 Springer-Verlag.

引用

页码：445 / 449

页数：5

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