GENERALIZED FRENKEL-KONTOROVA MODEL FOR STRUCTURAL MODULATIONS IN BISMUTH HIGH-TC SUPERCONDUCTORS AND RELATED-COMPOUNDS

被引：8
|
作者：
QUE, WM
WALKER, MB
机构：
[1] Department of Physics, University of Toronto, Toronto
来源：
PHYSICAL REVIEW B | 1992年 / 46卷 / 22期
关键词：
D O I：
10.1103/PhysRevB.46.14772
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Structural modulations in bismuth-based high-T(c) superconductors and in compounds that are isostructural with bismuth superconductors axe investigated by constructing a generalized Frenkel-Kontorova model. The presence of principal and subsidiary maxima in the model potential due to Bi ions leads to a rich variety of ground-state ion configurations. The formation of zigzag Bi-O chains in some of these compounds with the insertion of extra oxygen can be simulated by this model. We find that the space-group B2/m11 is a possible candidate for Bi10Sr15Fe10O46, Which is isostructural with the n = 2 phase of the bismuth superconductors Bi2Sr2Can-1CunO4+2n+delta.
引用
收藏
页码：14772 / 14778
页数：7
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