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Control of supercurrent in a self-assembled InAs quantum dot Josephson junction by electrical tuning of level overlaps
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10.1063/1.4719072
/content/aip/journal/apl/100/20/10.1063/1.4719072
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/20/10.1063/1.4719072
View: Figures

Figures

Image of FIG. 1.
FIG. 1.

(a) Scanning electron microscope image of the device. (b) as a function of and with leads in the N state ( and ). (c) with leads in the superconducting state ( and ). (d) Energy schematic for 1st-order MAR and quasi-particle tunnelling resonances.

Image of FIG. 2.
FIG. 2.

(a) plotted as a function of with and B = 200 mT. Black solid arrows indicate the approximate position of Coulomb peaks when . The dashed line indicates data collected at and B = 5 T for which a Coulomb peak between regions II and III may be observed. Shaded regions indicate odd electron occupation. (b) plotted as a function of with B = 0 T. The inset shows I-bias measurements at , and the back-gate conditions indicated with dashed lines in the main figure. (c) Plot of as a function of for a range of . Dashed lines are fitting curves for regions I (purple), II (black), and V (brown) at .

Image of FIG. 3.
FIG. 3.

(a) fitting parameters and as a function of . (b) Plot of estimated from the width of the N state Kondo features and estimated from the width of the first (left most) Coulomb peak in Fig. 2(a).

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/content/aip/journal/apl/100/20/10.1063/1.4719072
2012-05-17
2014-04-24
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Control of supercurrent in a self-assembled InAs quantum dot Josephson junction by electrical tuning of level overlaps
http://aip.metastore.ingenta.com/content/aip/journal/apl/100/20/10.1063/1.4719072
10.1063/1.4719072
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