ANISOTROPY OF BI2SR2CACU2O8+Y REVISITED

被引：89

作者：

IYE, Y

OGURO, I

TAMEGAI, T

DATARS, WR

MOTOHIRA, N

KITAZAWA, K

机构：

[1] MCMASTER UNIV, DEPT PHYS, HAMILTON L8S 4L8, ONTARIO, CANADA

[2] UNIV TOKYO, FAC ENGN, DEPT IND CHEM, BUNKYO KU, TOKYO 113, JAPAN

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1992年 / 199卷 / 1-2期

基金：

日本学术振兴会; 加拿大自然科学与工程研究理事会;

关键词：

D O I：

10.1016/0921-4534(92)90554-P

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The anisotropic superconductivity in Bi2Sr2CaCu2O8+y is investigated by precision measurements of resistivity and torque as a function of the magnetic field angle in the reversible regime. Scaling of the angular dependences of these quantities with an effective field, H(sin2-theta+gamma-2cos2-theta)1/2, theta being the field angle measured from the basal plane, suggests values of the anisotropy parameter gamma almost-equal-to 200 or larger, which substantially exceeds previous estimates. In the small theta region, the effect of a layer gains importance.

引用

页码：154 / 160

页数：7

共 33 条

[1] FROM ISOTROPIC TO ANISOTROPIC SUPERCONDUCTORS - A SCALING APPROACH [J].