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

Volume

10

Issue

2

fYear

2000

fDate

6/1/2000 12:00:00 AM

Firstpage

1631

Lastpage

1633

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;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.848313

Filename

848313