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Jpn. J. Appl. Phys. 29 (1990) pp. L466-L469  |Next Article|  |Table of Contents|
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Letter

Nonbolometric Infrared Detection in La2-xSrxCuO4 and YBa2Cu3Oy Epitaxial Thin Films

Keiichi Tanabe, Youichi Enomoto, Minoru Suzuki, Tsunekazu Iwata and Akihiko Yamaji

NTT Optoelectronics Laboratories

(Received January 12, 1990; accepted for publication February 8, 1990)

The electrical responses to infrared radiation of La2-xSrxCuO4(100) and YBa2Cu3Oy(110) epitaxial thin films with relatively low Tc values and Jc values of 104–105 A/cm2 are studied using modulated laser light. These films show apparent nonbolometric responses at temperatures below the transition regions which are strongly dependent on the bias current. The difference in the observed responsivity between these high-Tc materials and BaPb1-xBixO3 can be explained on the basis of nonequilibrium superconductivity.

URL: http://jjap.jsap.jp/link?JJAP/29/L466/
DOI: 10.1143/JJAP.29.L466


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