Phase transition in a complex superconductor of BEDT-TTF series by nonlinear susceptibility

被引：2

作者：

Matsuura, M ^{[1
]}

Miyoshi, K ^{[1
]}

Kuwagaki, T ^{[1
]}

Hirose, M ^{[1
]}

Hagiwara, M ^{[1
]}

Saito, G ^{[1
]}

机构：

[1] KYOTO UNIV,FAC SCI,DEPT CHEM,KYOTO 606,JAPAN

来源：

PHYSICA B | 1997年 / 237卷

关键词：

phase transition; nonlinear susceptibility; organic superconductor; superconductivity;

D O I：

10.1016/S0921-4526(97)00092-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Nonlinear magnetic response to an AC excitation held are examined for kappa-(BEDT-TTF)(2)Cu(NCS)(2) at zero external DC held. Temperature dependence of M-3 omega', the third-harmonic in-phase component, depends strongly on field amplitude h and also on sample preparation. At a weak field amplitude of h < 0.1 Oe, however, it shows a common positive peak around 9 K, indicating a negative divergence of nonlinear susceptibility chi(2) at the superconductive transition temperature T-c.

引用

页码：186 / 187

页数：2

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