Broadband detection properties of EuBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// array junctions

Author

Tsuru, K. ; Suzuki, M. ; Michikami, O.

Author_Institution

NTT Interdisciplinary Res. Labs., Tokai, Japan

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

3280

Lastpage

3283

Abstract

We have fabricated EuBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// Josephson junction arrays of two different sizes to improve detection output and microwave coupling between junctions and an rf source. The arrays contain three weak link grain boundary junctions made on an MgO bicrystal substrate. It is demonstrated that both the junction array configuration and smaller junction size are effective in improving microwave coupling and hence in increasing the responsivity. The best responsivity obtained is 1085 V/W for broadband detection at 11.9 GHz.<>

Keywords

Josephson effect; barium compounds; europium compounds; high-temperature superconductors; microwave detectors; superconducting microwave devices; 11.9 GHz; EuBa/sub 2/Cu/sub 3/O/sub 7-/spl delta//; EuBa/sub 2/Cu/sub 3/O/sub 7/; Josephson junction arrays; MgO; MgO bicrystal substrate; RF source; broadband detection; microwave coupling; responsivity; weak link grain boundary junctions; Detectors; Frequency; Grain boundaries; High temperature superconductors; Impedance; Josephson junctions; Sputtering; Substrates; Superconducting microwave devices; Thermal conductivity;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.403292

Filename

403292