Anisotropic resistivities of single-crystal Bi2Sr2CaCu2O8+δ with different oxygen content

被引：56

作者：

Chen, XH ^{[1
]}

Yu, M

Ruan, KQ

Li, SY

Gui, Z

Zhang, GC

Cao, LZ

机构：

[1] Univ Sci & Technol China, Struct Res Lab, Hefei 230026, Peoples R China

[2] Univ Sci & Technol China, Dept Phys, Hefei 230026, Peoples R China

[3] Univ Sci & Technol China, Dept Chem, Hefei 230026, Peoples R China

来源：

PHYSICAL REVIEW B | 1998年 / 58卷 / 21期

关键词：

D O I：

10.1103/PhysRevB.58.14219

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The in-plane resistivity rho(ab)(T) and the out-of-plane rho(c)(T) have been extensively measured for the pure single-crystal Bi2Sr2CaCu2O8+delta (Bi2212) annealed at different oxygen pressure. The rho(c)(T) and anisotropy [rho(c)(T)/rho(ab)(T)] decreases rapidly with increasing carrier concentration. It is found that the out-of-plane resistivity decreases linearly with temperature down to about 120 K for the overdoped sample; its resistivity anisotropy is a weak temperature dependence. In the ab plane, the anisotropy is very weak and nearly independent of temperature. The data of rho(c)(T) and rho(c)(T)/rho(ab)(T) are well fitted by the bipolaron theory proposed by Alexandrov and Mott. [S0163-1829(98)05945-1].

引用

页码：14219 / 14222

页数：4