INPLANE ANISOTROPY OF THE INTERACTION BETWEEN VORTEX AND TWIN BOUNDARY IN YBA2CU3O7 SINGLE-CRYSTALS

被引：56

作者：

LIU, JZ ^{[1
]}

JIA, YX ^{[1
]}

SHELTON, RN ^{[1
]}

FLUSS, MJ ^{[1
]}

机构：

[1] UNIV CALIF LAWRENCE LIVERMORE NATL LAB,DEPT CHEM & MAT SCI,DIV CONDENSED MATTER & ANALYT SCI,LIVERMORE,CA 94550

来源：

PHYSICAL REVIEW LETTERS | 1991年 / 66卷 / 10期

关键词：

D O I：

10.1103/PhysRevLett.66.1354

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report the temperature dependence of the magnetization hysteresis loops of high-quality YBa2Cu3O7 single crystals, each with a single unique orientation of twin boundaries. We have observed magnetization anisotropy in the temperature range 6-77 K for various magnetic fields applied normal to the c axis and parallel (stronger pinning) or perpendicular (weaker pinning) to the twin-boundary orientation, thus causing an anisotropic critical current density J(c). Magnetization-time-relaxation and Meissner-fraction measurements also support the above observation.

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页码：1354 / 1357

页数：4

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