AC SUSCEPTIBILITY AND CRITICAL-CURRENT IN THE ORGANIC SUPERCONDUCTOR KAPPA-(ET)(2)CU(NCS)(2)

被引：2

作者：

GONZALEZ, MA

VELEZ, M

VICENT, JL

SCHLEUTER, J

WILLIAMS, JM

CRABTREE, GW

机构：

[1] ARGONNE NATL LAB,DIV CHEM,ARGONNE,IL 60439

[2] ARGONNE NATL LAB,DIV MAT SCI,ARGONNE,IL 60439

来源：

PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS | 1994年 / 235卷

关键词：

D O I：

10.1016/0921-4534(94)92456-2

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The AC susceptibility (chi', chi'') has been measured in a single crystal of the organic superconductor kappa-(ET)(2)Cu(NCS)(2) (T-c=9.5 K) as a function of the DC magnetic field, for several frequencies (10(2) Hz<f<10(4) Hz) and different AC fields (1 mu T<h(ac)<300 mu T) at fixed temperatures. Nonlinear AC response appears above 10 mu T. We have studied this nonlinear regime and obtained the magnetic field and frequency dependence of the critical current density with a critical state model. J(c) shows an exponential decrease as a function of the magnetic field and increases with increasing frequency. This results may be understood in terms of the collective pinning theory.

引用

页码：2471 / 2472

页数：2

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