Quantum charge diffusion in underdamped Josephson junctions and superconducting nanowires
Mesoscale and Nanoscale Physics
2008-08-21 v2 Superconductivity
Abstract
The effect of quantum fluctuations on the current-voltage characteristics of Josephson junctions and superconducting nanowires is studied in the underdamped limit. Quantum fluctuations induce transitions between a Coulomb--blockade and a supercurrent branch, and can significantly modify the shape of current-voltage characteristics in the case of a highly resistive environment. Owing to the phase-charge duality, our results can be directly extended to the opposite overdamped limit.
Cite
@article{arxiv.0706.2260,
title = {Quantum charge diffusion in underdamped Josephson junctions and superconducting nanowires},
author = {A. Zazunov and N. Didier and F. W. J. Hekking},
journal= {arXiv preprint arXiv:0706.2260},
year = {2008}
}