TRANSIENT MOMENT RELAXATION IN HIGH-TEMPERATURE SUPERCONDUCTORS

被引：12
|
作者：
XUE, YY
GAO, L
REN, YT
CHAN, WC
HOR, PH
CHU, CW
机构：
[1] Texas Center for Superconductivity, University of Houston, Houston
来源：
PHYSICAL REVIEW B | 1991年 / 44卷 / 21期
关键词：
D O I：
10.1103/PhysRevB.44.12029
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The decays of the persistent supercurrent have been derived for several characteristic I-Y relationships with few sample-dependent parameters. The results are compared with recent short-time flux-creep data in a short "transient" time window (10(-4)-10(2) s). The results favor the I-V characteristics V is-proportional-to exp[-(I0/I)mu], as predicted by the collective-pinning and vortex-glass models. However,the mu so obtained is greater than 1, in contrast with that predicted. This may imply a different type of vortex elemental excitation observed in our low-field conditions.
引用
收藏
页码：12029 / 12032
页数：4
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