ELECTRON-PHONON DECOUPLING IN THE PHOTORESPONSE OF YBACUO GRANULAR FILMS AT LOW-TEMPERATURE

被引：14

作者：

MANEVAL, JP

CHIBANE, F

BLAND, RW

机构：

[1] Laboratoire de Physique de la Matière Condensée, F-75231, Paris 5, 24, rue Lhomond

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 03期

关键词：

D O I：

10.1063/1.107930

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

Granular YBaCuO films in their current-induced dissipative state were exposed to light pulses of small fluence and the decay of the photoresistance was observed on the nanosecond time scale in the range 1 K < T< 35 K. The response appears bolometric down to 10 K. Below, we resolve a second decay rate having a temperature dependence characteristic of the electron-phonon interaction. Using the known lattice specific heat as a reference, we deduce the Sommerfeld coefficient (gamma = 2.5 mJ/K2 mol) of the electronic specific heat.

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页码：339 / 341

页数：3

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