Microwave‐detected optical response of YBa2Cu3O7−xthin films
作者:
R. Kaplan,
W. E. Carlos,
E. J. Cukauskas,
J. Ryu,
期刊:
Journal of Applied Physics
(AIP Available online 1990)
卷期:
Volume 67,
issue 9
页码: 4212-4216
ISSN:0021-8979
年代: 1990
DOI:10.1063/1.344958
出版商: AIP
数据来源: AIP
摘要:
Microwave‐detected optical response (MDOR) of YBa2Cu3O7−xand other oxide superconductor thin films is shown to yield information complementary to that provided by trasnport photoconductivity measurements. The MDOR technique yields a superposition of response from all illuminated portions of a sample, irrespective of the existence of a resistive macroscopic percolative current path. The response is found to be bolometric at temperatures for which resistance appears in transport measurements. At low temperatures MDOR results imply a nonbolometric response which in some respects is consistent with nonequilibrium quasiparticle concentration due to radiative pair breaking.
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