PARAMAGNETIC MEISSNER EFFECT IN BI HIGH-TEMPERATURE SUPERCONDUCTORS

被引：296
|
作者：
BRAUNISCH, W
KNAUF, N
KATAEV, V
NEUHAUSEN, S
GRUTZ, A
KOCK, A
RODEN, B
KHOMSKII, D
WOHLLEBEN, D
机构：
[1] Acad Sci USSR, Zavoiskii Physicotech Inst, Kazan 420029, RUSSIA
[2] Acad Sci USSR, Lebedev Phys Inst, Moscow, RUSSIA
来源：
PHYSICAL REVIEW LETTERS | 1992年 / 68卷 / 12期
关键词：
D O I：
10.1103/PhysRevLett.68.1908
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
For certain ceramic samples of the Bi-based high-temperature superconductors, the dc field-cooling signal becomes paramagnetic in fields below a few 100 mOe. This effect correlates with an anomaly in the low-field microwave absorption. The data are consistent with orbital paramagnetic moments due to the appearance of spontaneous supercurrents in fields smaller than the lower critical field H(c1a) parallel to the CuO planes.
引用
收藏
页码：1908 / 1911
页数：4
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