PHASE-SEPARATION AND SUPERCONDUCTIVITY IN THE COPPER-OXIDE CHAIN

被引：5

作者：

BARFORD, W

GAGLIANO, ER

机构：

[1] Department of Physics, The University of Sheffield, Sheffield

[2] Physics Department, University of Illinois at Urbana-Champaign, Urbana

来源：

PHYSICA B | 1994年 / 194卷

关键词：

D O I：

10.1016/0921-4526(94)91227-0

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Using exact diagonalisation techniques we study the role of the nearest neighbour coulomb repulsion in the copper-oxide chain. It is shown that for hole doping this induces phase separation, as well as a neutral-ionic transition, when the Cu2+ --> Cu+ charge fluctuations dominate. In the proximity of the phase separation region the superconducting correlations are the most divergent.

引用

页码：1455 / 1456

页数：2