THERMALLY ACTIVATED FLUX MOTION NEAR THE ABSOLUTE-ZERO

被引：70

作者：

GRIESSEN, R

机构：

[1] Faculty of Physics and Astronomy, Free University, 1081 HV Amsterdam

来源：

PHYSICA C | 1991年 / 172卷 / 5-6期

关键词：

D O I：

10.1016/0921-4534(91)90211-G

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Recent experimental studies of the magnetization M(t) relaxation of high-T(c) superconductors lead to the conclusion that a sizeable relaxation occurs down to 100 mK and that both dM/dln t and dln M/dln t do not extrapolate linearly to zero as expected from a standard thermally activated flux motion model (TAFM). We show here that for a wide class of pinning potentials the time derivatives of the magnetization vary as T1/n with n greater-than-or-equal-to 3/2 at low temperatures.

引用

页码：441 / 449

页数：9

共 22 条

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