NOVEL MAGNETIC-RELAXATION EFFECTS IN SUPERCONDUCTING UPT3 SINGLE-CRYSTALS

被引：6

作者：

POLLINI, A ^{[1
]}

MOTA, AC ^{[1
]}

VISANI, P ^{[1
]}

PITTINI, R ^{[1
]}

JURI, G ^{[1
]}

TERUZZI, T ^{[1
]}

FRANSE, JJM ^{[1
]}

机构：

[1] UNIV AMSTERDAM,NAT LAB,1018 XE AMSTERDAM,NETHERLANDS

来源：

PHYSICA C | 1991年 / 185卷

关键词：

D O I：

10.1016/0921-4534(91)91435-7

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Very fast magnetic relaxation processes down to 7 mK have been observed in UPt3 single crystals with H perpendicular-to c-axis. The decay curves cannot be described with a logarithmic law but are well fitted by a stretched exponential time dependence. At low magnetic fields, two different vortex dynamics regimes are observed: an almost temperature independent flux motion regime for T < 350 mK followed by a strong increase of the magnetization relaxation for T > 400 mK. These novel relaxation effects point to particular features of the vortices or of the flux line lattice in the two low-field superconducting phases of UPt3.

引用

页码：2625 / 2626

页数：2

共 11 条

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