AC Josephson effect in the long voltage-biased SINIS junction

Details AC Josephson effect in the long voltage-biased SINIS junction AC Josephson effect in the long voltage-biased SINIS junction

2009-01-14

arxiv.org/abs/0901.1966v2

Physics

Condensed Matter

Superconductivity

Final version accepted for publication in JETP Letters. Introduction and discussion in the end of Sec.4 are extended, figure a

Scientific paper

Theory of non-stationary coherent effects is developed for superconductor-normal-superconductor (SNS) structures with relatively strong normal scattering on S/N interfaces (interface resistance is large compared to intrinsic resistance of N metal). Analitical expressions are found for the time-dependent anomalous Green functions induced in the N region under the fixed-voltage-bias. The amplitude of the current oscillations is determined in non-equilibrium conditions. Non-stationary correction to the distribution function is calculated in high-temperature limit and found to be slowly decreasing with the temperature, leading to the dominance of the second-harmonic term in the Josepshon current at high temperatures and low voltage.

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