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Electrical parameters of niobium-based overdamped superconductor-normal metal-insulator-superconductor Josephson junctions for digital applications
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10.1063/1.3354090
/content/aip/journal/jap/107/10/10.1063/1.3354090
http://aip.metastore.ingenta.com/content/aip/journal/jap/107/10/10.1063/1.3354090

Figures

Image of FIG. 1.
FIG. 1.

characteristics of two junctions with a 100 nm thick aluminum layer. The junctions have been fabricated with an oxygen exposure of (left) and (right) .

Image of FIG. 2.
FIG. 2.

Characteristic voltage vs aluminum thickness at . Each data point is an average of several measured junctions from the same chip. The oxygen pressure ranges from 160 to .

Image of FIG. 3.
FIG. 3.

Comparison of for the and metal-insulator transition barrier junctions.

Image of FIG. 4.
FIG. 4.

Hysteresis of the characteristics vs temperature for a typical SNIS junction. Squares and triangles correspond to two different junctions while the line is a linear fit.

Image of FIG. 5.
FIG. 5.

Sketch of a slightly hysteretic SNIS junction integrated with an open-ended transmission line (stub), used to verify the junction capacitance value.

Image of FIG. 6.
FIG. 6.

characteristics of the three SNIS junctions in parallel with a resonant structure. The arrows of the insets of junctions Z1 and Z3 indicate the resonances. For junction Z2, the resonances are above the product and are consequently not visible.

Image of FIG. 7.
FIG. 7.

Relative frequency shift between simulated and measured resonance frequencies: /measured frequency. Squares, triangles up, diamonds, triangles right, and triangles down: respectively, first, second, third, fourth, and fifth resonance of junction Z1. Open circles: resonance of junction Z3.

Tables

Generic image for table
Table I.

Homogeneity of parameters at 4.2 K.

Generic image for table
Table II.

Parameters of junctions under test at 4.2 K.

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/content/aip/journal/jap/107/10/10.1063/1.3354090
2010-05-27
2014-04-20
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Electrical parameters of niobium-based overdamped superconductor-normal metal-insulator-superconductor Josephson junctions for digital applications
http://aip.metastore.ingenta.com/content/aip/journal/jap/107/10/10.1063/1.3354090
10.1063/1.3354090
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