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Article Dans Une Revue Physical Review B Année : 2016

Interplay Between Electron Over-Heating and ac Josephson Effect

Résumé

We study the response of high-critical current proximity Josephson junctions to a microwave excitation. Electron over-heating in such devices is known to create hysteretic dc voltage-current characteristics. Here we demonstrate that it also strongly influences the ac response. The interplay of electron over-heating and ac Josephson dynamics is revealed by the evolution of the Shapiro steps with the microwave drive amplitude. Extending the resistively shunted Josephson junction model by including a thermal balance for the electronic bath coupled to phonons, a strong electron over-heating is obtained.
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Dates et versions

hal-01257485 , version 1 (17-01-2016)
hal-01257485 , version 2 (18-01-2016)
hal-01257485 , version 3 (27-05-2016)

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Alessandro de Cecco, Kévin Le Calvez, Benjamin Sacépé, Clemens Winkelmann, Hervé Courtois. Interplay Between Electron Over-Heating and ac Josephson Effect. Physical Review B, 2016, 93 (18), pp.180505. ⟨10.1103/PhysRevB.93.180505⟩. ⟨hal-01257485v3⟩

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