Coherent current transport in wide ballistic Josephson junctions
Mesoscale and Nanoscale Physics
2009-11-10 v1 Superconductivity
Abstract
We present an experimental and theoretical investigation of coherent current transport in wide ballistic superconductor-two dimensional electron gas-superconductor junctions. It is found experimentally that upon increasing the junction length, the subharmonic gap structure in the current-voltage characteristics is shifted to lower voltages, and the excess current at voltages much larger than the superconducting gap decreases. Applying a theory of coherent multiple Andreev reflection, we show that these observations can be explained in terms of transport through Andreev resonances.
Cite
@article{arxiv.cond-mat/0311344,
title = {Coherent current transport in wide ballistic Josephson junctions},
author = {P. Samuelsson and A. Ingerman and G. Johansson and E. V. Bezuglyi and V. S. Shumeiko and G. Wendin and R. Kursten and A. Richter and T. Matsuyama and U. Merkt},
journal= {arXiv preprint arXiv:cond-mat/0311344},
year = {2009}
}
Comments
4 pages, 4 figures