Relevant energy scale in hybrid mesoscopic Josephson junctions
arXiv:0810.2196 · doi:10.1103/PhysRevB.78.052506
Abstract
Transport properties of high quality Nb/semiconductor/Nb long Josephson junctions based on metamorphic In_0.75Ga_0.25As epitaxial layers are reported. Different junction geometries and fabrication procedures are presented that allow a systematic comparison with quasiclassical theory predictions. The impact of junction transparency is highlighted and a procedure capable of yielding a high junction quality factor is identified.
11 pages, 3 figures