FLUCTUATION OF VORTICES IN SINGLE-CRYSTAL TL2BA2CUO6 SUPERCONDUCTORS

被引：32

作者：

ZUO, F ^{[1
]}

VACARU, D ^{[1
]}

DUAN, HM ^{[1
]}

HERMANN, AM ^{[1
]}

机构：

[1] UNIV COLORADO, DEPT PHYS, BOULDER, CO 80309 USA

来源：

PHYSICAL REVIEW B | 1993年 / 47卷 / 13期

关键词：

D O I：

10.1103/PhysRevB.47.8327

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report magnetization studies on single crystals of Tl2Ba2CuO6 superconductors. For magnetic fields parallel to the c-axis configuration, fluctuations of vortices are observed in this layered compound. The characteristic temperature T* where M is independent of applied field is about 84.2 K. Low-field magnetization measurements show Hc1 = 0 at T(s) = 86.5 K while the mean-field transition temperature Tc0 = 88.8 K. The experimental results strongly suggest the Tl compound is Josephson-coupled between superconducting layers, and the spontaneous excitations are thus the wandering vortex lines rather than pancakes.

引用

页码：8327 / 8330

页数：4

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