EFFECTS OF DIMENSIONAL CROSSOVER ON FLUX PINNING IN A MODEL HIGH-T(C) SUPERCONDUCTOR - YBA2CU3O7-DELTA/(PRXY1-X)BA2CU3O7-DELTA SUPERLATTICES

被引：53

作者：

LI, Q ^{[1
]}

KWON, C ^{[1
]}

XI, XX ^{[1
]}

BHATTACHARYA, S ^{[1
]}

WALKENHORST, A ^{[1
]}

VENKATESAN, T ^{[1
]}

HAGEN, SJ ^{[1
]}

JIANG, W ^{[1
]}

GREENE, RL ^{[1
]}

机构：

[1] UNIV MARYLAND,DEPT ELECT ENGN,COLL PK,MD 20742

来源：

PHYSICAL REVIEW LETTERS | 1992年 / 69卷 / 18期

关键词：

D O I：

10.1103/PhysRevLett.69.2713

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Superlattices of one-unit-cell-thick YBa2Cu3O7-delta layers with (PrxY1-x)Ba2Cu3O7-delta were fabricated as a model system to study the effects of magnetic coupling on flux pinning in high-T(c) superconductors. The sample can be transformed from an S/S' to an S/N structure by increasing the temperature from below to above the T(c) of the intercalating (PrxY1-x)Ba2Cu3O7-delta layer. Dramatic changes in the characteristics of the magnetic field and angle dependence of the critical current density, J(c)(B,THETA), caused by a 3D to 2D crossover were observed. The result demonstrates the significance of the dimensionality to the flux pinning in these materials with layered structures.

引用

页码：2713 / 2716

页数：4

共 24 条

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