Andreev reflection in layered structures: implications for high T_c grain boundary Josephson junctions
Superconductivity
2009-10-31 v1 Mesoscale and Nanoscale Physics
Abstract
Andreev reflection is investigated in layered anisotropic normal metal / superconductor (N/S) systems in the case of an energy gap \Delta in S not negligible with respect to the Fermi energy E_F, as it probably occurs with high critical temperature superconductors (HTS). We find that in these limits retro-reflectivity, which is a fundamental feature of Andreev reflection, is broken modifying sensitively transport across S/N interfaces. We discuss the consequences for supercurrents in HTS Josephson junctions and for the midgap states in S-N contacts
Cite
@article{arxiv.cond-mat/0010105,
title = {Andreev reflection in layered structures: implications for high T_c grain boundary Josephson junctions},
author = {A. A. Golubov and F. Tafuri},
journal= {arXiv preprint arXiv:cond-mat/0010105},
year = {2009}
}
Comments
4 pages, 4 figures, to be published in Phys. Rev. B