Active microwave noise spectroscopy for characterization of superconducting materials

J. Konopka, G. Jung

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Scopus citations


Most superconducting materials under dc current bias emanate excess noise which may extend from low frequencies up to the Tera-Hertz region. The microwave noise in some granular high Tc films at 12 GHz can be as high as 10 pW in 100 MHz bandwidth [1]. We studied these noises in Y-Ba-Cu-O and Bi-Sr-Ca-Cu-O films grown on different substrates in the temperature range from 4.2 to 100 K using current bias and magnetic field as experimental variables. Analysis of the measurements provides valuable information on the superconductor crystalline microstructure, parameters of the intrinsic Josephson clusters, synchronization of the radiation from clusters and on the properties of the intergranular inclusions. Some of these information is difficult or even impossible to obtain by other methods.

Original languageEnglish
Title of host publicationConference Proceedings - European Microwave Conference
PublisherPubl by Microwave Exhibitions & Publ Ltd
Number of pages6
ISBN (Print)0946821127
StatePublished - 1 Dec 1990
Externally publishedYes
EventProceedings of the 20th European Microwave Conference - Budapest, Hung
Duration: 10 Sep 199013 Sep 1990

Publication series

NameConference Proceedings - European Microwave Conference


ConferenceProceedings of the 20th European Microwave Conference
CityBudapest, Hung

ASJC Scopus subject areas

  • Engineering (all)


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