UPPER CRITICAL-FIELD, PENETRATION DEPTH, AND GL PARAMETER OF TL-2223 SINGLE-CRYSTALS

被引：10

作者：

BRANDSTATTER, G ^{[1
]}

SAUERZOPF, FM ^{[1
]}

WEBER, HW ^{[1
]}

LADENBERGER, F ^{[1
]}

SCHWARZMANN, E ^{[1
]}

机构：

[1] UNIV GOTTINGEN,INST ANORGAN CHEM,D-37077 GOTTINGEN,GERMANY

来源：

PHYSICA C | 1994年 / 235卷

关键词：

D O I：

10.1016/0921-4534(94)92144-X

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

A Tl2Ca2Ba2Cu3O10 single crystal of platelet shape with T-c=121.5 K was investigated by SQUID magnetometry. Zero field cooled (=ZFC) and field cooled (=FC) measurements were carried out in different fields with the applied field parallel to the crystallographic c-axis. Taking the fluctuations of the vortices in Josephson-coupled layered superconductors into account, the temperature dependent penetration depth lambda(ab), the Ginzburg Landau parameter kappa, and the upper critical field H-c2,, are calculated from the reversible ZFC/FC magnetization data. The H-c2-data (H parallel to c) can be fitted linearly at higher temperatures. The temperature dependent penetration depth does not follow the empirical law lambda(T)=lambda(0)/(1-(T/T-c)(4))(1/2).

引用

页码：1845 / 1846

页数：2