FAST NONLINEAR PHOTORESPONSE OF CURRENT BIASED THIN-FILM BI2SR2CACU2O8 TO PULSED FAR-INFRARED RADIATION

被引：21

作者：

HUGGARD, PG ^{[1
]}

SCHNEIDER, G ^{[1
]}

OBRIEN, T ^{[1
]}

LEMOINE, P ^{[1
]}

BLAU, W ^{[1
]}

PRETTL, W ^{[1
]}

机构：

[1] UNIV REGENSBURG,INST PHYS,W-8400 REGENSBURG,GERMANY

来源：

APPLIED PHYSICS LETTERS | 1991年 / 58卷 / 22期

关键词：

D O I：

10.1063/1.104823

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

The response of a polycrystalline thin-film Bi2Sr2CaCu2O8 superconducting stripe to short-pulse far-infrared (lambda = 447-mu-m) radiation is reported. Under constant current bias, a photosignal is generated when the maximum zero voltage current is exceeded. Measurements of the sensitivity as a function of temperature, bias current, and intensity reveal the signal source to be nonbolometric. The response is found to obey a (power) 1/2 law over more than 2 orders of magnitude. We believe the detection mechanism arises from the interaction of grain boundary Josephson junctions with radiation induced screening currents.

引用

页码：2549 / 2551

页数：3

共 11 条

[1]

BARONE A, 1982, PHYSICS APPLICATIONS

[2] ENHANCED-MODE RADIATION DETECTION BY SUPERCONDUCTING FILMS [J].