Title :
Observation of electromagnetic coupling to a closed superconducting thin-film cavity
Author :
Thomas, C.D. ; Ulmer, M.P. ; Ketterson, J.B.
Author_Institution :
Dept. of Phys. & Astron., Northwestern Univ., Evanston, IL, USA
fDate :
6/1/2000 12:00:00 AM
Abstract :
We have studied Josephson junctions coupled to closed, superconducting, thin-film cavities. We briefly discuss the coupling mechanism in this system as well as the fabrication methods and expected resonant modes. Cavities consisting of both quartz and anodized niobium were studied. Small current steps have been observed in the current-voltage (I-V) measurements of junctions at voltages corresponding to the calculated modes of the closed cavity indicating Josephson coupling.
Keywords :
Josephson effect; electromagnetic coupling; superconducting cavity resonators; superconducting junction devices; superconducting thin films; Fiske step; Josephson junction; Nb; SiO/sub 2/; anodized niobium; closed superconducting thin film cavity; current-voltage characteristics; electromagnetic coupling; fabrication; quartz; resonant mode; Current measurement; Electromagnetic coupling; Fabrication; Josephson junctions; Magnetic field measurement; Magnetic fields; Maxwell equations; Superconducting microwave devices; Superconducting thin films; Voltage;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
