banner image
No data available.
Please log in to see this content.
You have no subscription access to this content.
No metrics data to plot.
The attempt to load metrics for this article has failed.
The attempt to plot a graph for these metrics has failed.
All magnesium diboride Josephson junctions with MgO and native oxide barriers
Rent this article for
View: Figures


Image of FIG. 1.
FIG. 1.

(a) Variation of superconducting transition temperature with film thickness. (b) Typical I-V characteristic of an junction at 4.2 K with 2.4 nm MgO, showing dc Josephson effect. The hysteresis suggests underdumped junctions with Stewart–McCumber parameter equal to 12. (c) product vs junction area. Poor dependence on junction area indicates that the junctions were leak-current free.

Image of FIG. 2.
FIG. 2.

(a) The dependence of temperature, the filed circles are experimental data and the solid line is fit with expression , assuming two gaps superconductor. (b) I-V characteristics under irradiation of 9.3 GHz at 4.2 K measured for different rf power. The junction size was . For clarity the plots were shifted along the horizontal. The Shapiro steps appeared at the expected voltage values of times with .

Image of FIG. 3.
FIG. 3.

(a) Normalized conductance vs voltage at selected temperatures for an junction. The junction size was . The subgap characteristics suggest leakage barrier. (b) The superconducting energy gap is well fitted using expression for , , and .


Article metrics loading...


Full text loading...

This is a required field
Please enter a valid email address
752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: All magnesium diboride Josephson junctions with MgO and native oxide barriers