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Incoherent microwave-induced resistive states of small Josephson junctions
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10.1063/1.3518082
/content/aip/journal/ltp/36/10/10.1063/1.3518082
http://aip.metastore.ingenta.com/content/aip/journal/ltp/36/10/10.1063/1.3518082

Figures

Image of FIG. 1.
FIG. 1.

The steps in the fabrication of the samples (a–g) and the electrical circuit for the measurements (h).

Image of FIG. 2.
FIG. 2.

A typical I–V curve of a Josephson junction biased in the Josephson phase diffusion regime. The area of the Josephson junction is , and the temperature is .

Image of FIG. 3.
FIG. 3.

I–V curves (only the low voltage part is shown) of a small Josephson junction at different microwaves powers. The I–V curves are measured at different temperatures T, K: 5 (a); 2.8 (b); 1.5 (c); 0.3 (d). The area of the Josephson junction is and the microwave frequency is . Different colors correspond to different microwave powers.

Image of FIG. 4.
FIG. 4.

I–V curves (only the low voltage part is shown) of a small Josephson junction at different microwave powers. The I–V curves are measured at different microwave frequencies , GHz: 40 (a); 10 (b); 5 (c); 1 (d). The area of the Josephson junction is and the temperature was fixed at . Different colors correspond to the different microwave powers.

Image of FIG. 5.
FIG. 5.

(a) I–V curves displaying fine branching, for different microwave powers. The arrows indicate the direction of the voltage switching during current sweeping. (b) The maximum voltage for the main branch and the first fine branch as functions of the microwave power. (c) The variations in the switching current for the first fine branch. The area of the Josephson junction is , the frequency , and the temperature .

Image of FIG. 6.
FIG. 6.

I–V curves of BSCCO (2212) containing intrinsic Josephson junctions for different microwave powers. The area of the BSCCO sample is . The microwave frequency is . The measurements were made at .

Image of FIG. 7.
FIG. 7.

Numerically calculated I–V curves (Eqs. (7) and (5)) for different microwave powers: enhanced phase diffusion regime. Here .6

Image of FIG. 8.
FIG. 8.

Numerically calculated I–V curves (Eqs. (7) and (5)) for different microwave powers: “zero crossing step” regime. Here .

Image of FIG. 9.
FIG. 9.

Numerically calculated I–V curves (Eqs. (7) and (5)) for different microwave powers showing the fine branching state regime. Here .

Tables

Generic image for table
Table I.

Parameters of Josephson junctions of different area. All data are obtained at .

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/content/aip/journal/ltp/36/10/10.1063/1.3518082
2010-12-10
2014-04-16
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: Incoherent microwave-induced resistive states of small Josephson junctions
http://aip.metastore.ingenta.com/content/aip/journal/ltp/36/10/10.1063/1.3518082
10.1063/1.3518082
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