Studies of high temperature superconductors as radiation detectors

A. Qiu, K. Moloni, E D Dahlberg, A. Bhattarai, James M. Van Hove, A. Khan

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Both DyBaCuO (DBCO) and YBaCuO (YBCO) films deposited on a variety of substrates have been investigated for their applicability as detectors of high frequency radiation. Both 10 GHz and infrared radiation (IR) were used as the high frequency radiation source. The measurements consisted of monitoring the temperature dependent resistance of superconducting films both in the presence and absence of radiation. This investigation shows that because the superconducting transition temperature is sensitive to the magnitude of the current in the film, the temperature dependence of the bolometric response is slightly tunable. In addition, effects of radiation on the current voltage characteristics below T superconducting were studied. This study found that films in this regime could also serve as radiation detectors. The substrates used included MgO, SiO, LaAlO3, and SrTiO3. The results obtained were independent of the substrate except for the width of the resistive transition. Disorder in the films as characterized by the resistive transition, affected the microwave more than the IR response.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
EditorsWagih H. Makky
PublisherPubl by Society of Photo-Optical Instrumentation Engineers
Number of pages9
ISBN (Print)0819409081
StatePublished - Dec 1 1992
EventInfrared Detectors: State of the Art - San Diego, CA, USA
Duration: Jul 19 1992Jul 19 1992

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherInfrared Detectors: State of the Art
CitySan Diego, CA, USA


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