ELECTRONIC-STRUCTURE AND CORRELATIONS OF CUO3 CHAINS IN YBA2CU3O7

被引：39

作者：

OLES, AM

GRZELKA, W

机构：

[1] JAGIELLONIAN UNIV, INST PHYS, PL-30059 KRAKOW, POLAND

[2] STANISLAW STASZIC UNIV MIN & MET, INST PHYS & NUCL TECHNOL, PL-30059 KRAKOW, POLAND

来源：

PHYSICAL REVIEW B | 1991年 / 44卷 / 17期

关键词：

D O I：

10.1103/PhysRevB.44.9531

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The correlated ground state of CuO3 chains in YBa2Cu3O7 is determined by using a tight-binding model and local-ansatz method. The holes in the chains are found to be delocalized and strongly correlated. Hole correlations are dependent on the hole density in the chains and are somewhat stronger than those in the CuO2 planes, being similar at Cu(1) and O(4) sites. The distortions of apical oxygens lead to strong changes in hole density at these atoms.

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页码：9531 / 9540

页数：10

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