DocumentCode
3784864
Title
Josephson effect in MgB/sub 2//Ag/MgB/sub 2/ step-edge junctions
Author
Jeong-Il Kye; Ho Nyun Lee; Joo Do Park; Seung Hyun Moon; Byungdu Oh
Author_Institution
LG Electron. Inst. of Technol., Seoul, South Korea
Volume
13
Issue
2
fYear
2003
Firstpage
1075
Lastpage
1078
Abstract
We have made MgB/sub 2//Ag/MgB/sub 2/ junctions using the steps formed on Al/sub 2/O/sub 3/(0001) substrates. The current-voltage characteristics of these superconductor-normal-superconductor (SNS) type Josephson junctions have shown nonhysteretic behavior with some excess current. The measured I/sub c/R/sub n/ values were 1.2 mV at 4.2 K and 0.24 mV at 20 K. We have observed the modulation of critical current under dc magnetic field as well as Shapiro steps under 20 GHz microwave irradiation.
Keywords
"Josephson effect","Josephson junctions","Magnetic field measurement","Current-voltage characteristics","Superconducting microwave devices","Superconducting devices","Current measurement","Microwave measurements","Magnetic modulators","Critical current"
Journal_Title
IEEE Transactions on Applied Superconductivity
Publisher
ieee
ISSN
1051-8223
Type
jour
DOI
10.1109/TASC.2003.814159
Filename
1211792
Link To Document