PARAMAGNETIC MEISSNER EFFECT IN HTSC

被引：12

作者：

KNAUF, N

BRAUNISCH, W

BAUER, G

KOCK, A

BECKER, A

FREITAG, B

KATAEV, V

RODEN, B

机构：

[1] UNIV COLOGNE,INST PHYS 2,W-5000 COLOGNE 41,GERMANY

[2] RUSSIAN ACAD SCI,LEBEDEV PHYS INST,MOSCOW,RUSSIA

来源：

PHYSICA B | 1994年 / 194卷

关键词：

D O I：

10.1016/0921-4526(94)91614-4

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

For certain polycrystalline Bi-HTSC samples, a surprising feature was observed: instead of the usual diamagnetic response of the dc field-cooling (FC) signal, a paramagnetic moment develops below T(C) for fields < 1 Oe. This effect correlates with an anomaly in the low-field microwave absorption. The data are consistent with spontaneous paramagnetic moments due to spontaneous orbital supercurrents. Such currents may originate in so called pi-contacts in the weak link network of polycrystalline material.

引用

页码：2229 / 2230

页数：2

共 6 条

[1] PARAMAGNETIC MEISSNER EFFECT IN BI HIGH-TEMPERATURE SUPERCONDUCTORS [J].