Emission of microwaves from d.c.-biased y-ba-cu-o thin films

J. Konopka, G. Jung

Research output: Contribution to journalArticlepeer-review

15 Scopus citations

Abstract

We measured microwave emission from d.c. current biased Y-Ba-Cu-O thin films in the temperature range from 300 to 4.2 K. Maximum radiated power (noncoherent) detected at 11.3 GHz within 1 GHz bandwidth was 8 pW at 4.2 K. Radiation level was sensitive to the temperature, d.c. bias current, and applied external magnetic field. We interpret our results in terms of flux motion in the two-dimensional network of Josephson coupled superconducting grains. Some measured emission peaks may suggest that a synchronous radiation of the array of Josephson junctions is present.

Original languageEnglish
Pages (from-to)549-553
Number of pages5
JournalEurophysics Letters
Volume8
Issue number6
DOIs
StatePublished - 15 Mar 1989
Externally publishedYes

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