Critical and excess current through an open quantum dot: Temperature and magnetic field dependence
Superconductivity
2009-04-30 v1
Abstract
We present measurements of temperature and magnetic field dependence of the critical current and excess current in a carbon nanotube Josephson quantum dot junction. The junction is fabricated in a controlled environment which allows for extraction of the full critical current. The measurements are performed in the open quantum dot regime, and fitted to theory with good qualitative agreement. We also show how to extract level spacing, level broadening, and charging energy of an open quantum dot from a bias spectroscopy plot.
Keywords
Cite
@article{arxiv.0812.4175,
title = {Critical and excess current through an open quantum dot: Temperature and magnetic field dependence},
author = {H. Ingerslev Jørgensen and K. Grove-Rasmussen and K. Flensberg and P. E. Lindelof},
journal= {arXiv preprint arXiv:0812.4175},
year = {2009}
}