High-Quality Planar high-Tc Josephson Junctions
超导电性
2009-11-11 v1
摘要
Reproducible high-Tc Josephson junctions have been made in a rather simple two-step process using ion irradiation. A microbridge (1 to 5 ?m wide) is firstly designed by ion irradiating a c-axis-oriented YBa2Cu3O7-? film through a gold mask such as the non-protected part becomes insulating. A lower Tc part is then defined within the bridge by irradiating with a much lower fluence through a narrow slit (20 nm) opened in a standard electronic photoresist. These planar junctions, whose settings can be finely tuned, exhibit reproducible and nearly ideal Josephson characteristics. This process can be used to produce complex Josephson circuits.
引用
@article{arxiv.cond-mat/0506792,
title = {High-Quality Planar high-Tc Josephson Junctions},
author = {N. Bergeal and X. Grison and J. Lesueur and G. Faini and M. Aprili and J. P. Contour},
journal= {arXiv preprint arXiv:cond-mat/0506792},
year = {2009}
}
备注
4 pages, 5 figures, to be published in Applied Physics Letters