Evaluation of CuO2 plane hole doping in YBa2Cu3O6+x single crystals

被引：297

作者：

Liang, Ruixing ^{[1
]}

Bonn, D. A. ^{[1
]}

Hardy, W. N. ^{[1
]}

机构：

[1] Univ British Columbia, Dept Phys & Astron, 6224 Agr Rd, Vancouver, BC V6T 1Z1, Canada

来源：

PHYSICAL REVIEW B | 2006年 / 73卷 / 18期

关键词：

D O I：

10.1103/PhysRevB.73.180505

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The electron hole concentration p in the CuO2 planes of YBa2Cu3O6+x (YBCO) has been evaluated using the unit cell length in the c direction together with a simple estimation for p in the chain oxygen-ordered phases. The empirical relationship between p and c obtained allows the calculation of p from the c-axis lattice parameter for the entire doping range of YBCO. It is also suggested that the empirical parabola describing the relationship between T-c and p in La2-xSrxCuO4 is reasonably correct for YBCO except for the region around p=1/8 (x=0.67), where the T-c of YBCO is suppressed by as much as 17 K. A plot of p vs x and a correction of the parabola for the p=1/8 effect are presented, allowing convenient determination of p from x and T-c.

引用

页数：4

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