Theoretical study of Cu-O chain fragments in the oxygen-deficient planes of YBa2CU3O6+x .2. Intrachain interactions and the chain fragment's length distribution

被引：19

作者：

Gawiec, P ^{[1
]}

Grempel, DR ^{[1
]}

Uimin, G ^{[1
]}

Zittartz, J ^{[1
]}

机构：

[1] UNIV COLOGNE,INST THEORET PHYS,D-50937 COLOGNE,GERMANY

来源：

PHYSICAL REVIEW B | 1996年 / 53卷 / 09期

关键词：

D O I：

10.1103/PhysRevB.53.5880

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study some models of the strongly correlated Cu-O chain fragments that form on the oxygen-deficient planes of YBa2Cu3O6+x. We use analytical and numerical methods to investigate the stability of the chain fragments as a function of their size. We discuss also the size and x dependence of the O-O intrachain interactions that enter in the phenomenological descriptions of the CuOx planes. Only the fermionic degrees of freedom of the chain fragments are considered.

引用

页码：5880 / 5888

页数：9

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