A novel method of realizing two-dimensional array systems of high-T/sub c/ step-edge Josephson junctions

Author

Reintsema, C.D.

Author_Institution

Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO, USA

Volume

5

Issue

2

fYear

1995

fDate

6/1/1995 12:00:00 AM

Firstpage

3259

Lastpage

3262

Abstract

We have developed a unique substrate terracing process to achieve two-dimensional arrays of high-T/sub c/ step-edge superconductor-normal metal-superconductor Josephson junctions. This process has been used to realize 3/spl times/3 and 3/spl times/6 antenna coupled arrays for direct detection of emission. An enhancement to this process incorporating a YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// base layer and a Nb/PdAu ground plane is described. This modification enabled the fabrication of arrays capacitively coupled to detector junctions for detection of emission at frequencies beyond 300 GHz. This report details the motivation, design, fabrication process, and preliminary results of several array experiments.<>

Keywords

Josephson effect; barium compounds; high-temperature superconductors; yttrium compounds; 300 GHz; Nb-PdAu; Nb/PdAu ground plane; YBa/sub 2/Cu/sub 3/O/sub 7-/spl delta// base layer; YBa/sub 2/Cu/sub 3/O/sub 7/; antenna coupled arrays; capacitive coupling; detector junctions; fabrication; high-T/sub c/ step-edge Josephson junctions; substrate terracing; superconductor-normal metal-superconductor junctions; two-dimensional array; Antenna arrays; Circuits; Fabrication; Frequency; Josephson junctions; Phased arrays; Sensor arrays; Substrates; Superconducting epitaxial layers; Yttrium barium copper oxide;

fLanguage

English

Journal_Title

Applied Superconductivity, IEEE Transactions on

Publisher

ieee

ISSN

1051-8223

Type

jour

DOI

10.1109/77.403287

Filename

403287