High Tc Josephson nanoJunctions (HTc JnJ) made by ion irradiation have remarkable properties for technological applications. However, the spread in their electrical characteristics increases with the ion dose. We present a simple model to explain the JnJ inhomogeneities, which accounts quantitatively for experimental data. The spread in the slit's width of the irradiation mask is the limiting factor.Monte Carlo simulations have been performed using different irradiation conditions to study their influence on the spread of the JnJ charcateristics. A "universal" behavior has been evidenced, which allows to propose new strategies to optimize JnJ reproducibility.
@article{arxiv.0705.1438,
title = {Study and optimization of ion-irradiated High-Tc Josephson nanoJunctions by Monte Carlo simulations},
author = {M. Sirena and N. Bergeal and J. Lesueur and G. Faini and R. Bernard and J. Briatico and D. G. Crete and J. P. Contour},
journal= {arXiv preprint arXiv:0705.1438},
year = {2009}
}
Comments
14 pages, 6 Figures. accepted in Journal of Applied Physics