INFLUENCE OF VISIBLE-LIGHT ON FLUX-CREEP IN HTS FILMS

被引:0
|
作者
LANDAU, IL
RINDERER, L
机构
来源
HELVETICA PHYSICA ACTA | 1995年 / 68卷 / 02期
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中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We present an experimental study of the flux creep rate in YBCO film at low temperatures. It is shown that the flux creep can be described in terms of quantum tunneling of vortices up to temperatures of 10-15 K. We have investigated also the influence of a weak illumination on a flux creep rate. It is shown that a visible light with intensity as weak as 1 mW/cm(2) drastically changes the flax creep rate at liquid helium temperatures. We propose a simple model to explain this extreme sensitivity of the flux creep to a weak illumination.
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页码:205 / 206
页数:2
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