AC Josephson effect in the long voltage-biased SINIS junction
Abstract
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.
Cite
@article{arxiv.0901.1966,
title = {AC Josephson effect in the long voltage-biased SINIS junction},
author = {K. S. Tikhonov and M. V. Feigel'man},
journal= {arXiv preprint arXiv:0901.1966},
year = {2015}
}
Comments
Final version accepted for publication in JETP Letters. Introduction and discussion in the end of Sec.4 are extended, figure and few references added, some numerical coefficients corrected