Complex Susceptibility of La1.9Sr0.1CuO4-δ
Complex Susceptibility of La1.9Sr0.1CuO4-δ
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La1.9Sr0.1CuO4-δ的复磁化率
DOI：
10.1143/jjap.26.l780
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发表时间：
1987
期刊：
影响因子：
--
通讯作者：
Y. Takeda
中科院分区：
文献类型：
--
作者：
H. Mazaki;M. Takano;R. Kanno;Y. Takeda
用复磁化率χ=χ′- icχ”研究了超导La1.9Sr0.1CuO4-δ对小交流磁场的响应。超导跃迁表现出两种特性：一种对外部交流场振幅h0（5-1000 mOe）变化不敏感，另一种对外部交流场振幅h0（5-1000 mOe）变化非常敏感。后一种情况下，随着h0的增加，过渡宽度明显变宽，χ”峰高度增强。此外，在500hz以下没有发现频率依赖性。这些行为在性质上类似于由弱连接组成的多连接网络。
The response of superconducting La1.9Sr0.1CuO4-δ against a small ac magnetic field is studied in terms of complex susceptibility χ=χ'-iχ''. The superconducting transition shows two types of characteristics: One is insensitive to the change in the amplitude h0(5-1000 mOe) of the external ac field, and the other is very sensitive to it. In the latter case, the transition width is appreciably broadened and the peak height of χ'' is enhanced as h0 increases. Besides, no frequency dependence is found below 500 Hz. These behaviors are qualitatively similar to that of the multiconnected network consisting of weak-link junctions.