EVIDENCE FOR THE SPECTRAL DEPENDENCE OF NONEQUILIBRIUM PICOSECOND PHOTORESPONSE OF YBACUO THIN-FILMS

被引：24

作者：

SEMENOV, AD ^{[1
]}

GOGHIDZE, IG ^{[1
]}

GOLTSMAN, GN ^{[1
]}

SERGEEV, AV ^{[1
]}

GERSHENZON, EM ^{[1
]}

机构：

[1] MOSCOW PEDAGOG UNIV,MOSCOW 119435,RUSSIA

来源：

APPLIED PHYSICS LETTERS | 1993年 / 63卷 / 05期

关键词：

D O I：

10.1063/1.109928

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The transient voltage photoresponse of current biased YBaCuO thin films to 20 ps laser pulses of 0.63 and 1.54 mum wavelengths is measured for temperatures around the superconducting transition region. The fast picosecond decay of the response is followed by a slow nanosecond relaxation which is associated with the bolometric effect. The magnitude of the fast component of the response varies in proportion to the square root of wavelength that plausibly reflects multiplication processes of photoexcited electrons via electron-electron scattering and interaction with high energy phonons.

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页码：681 / 683

页数：3

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