We report on low temperature measurements in a fully tunable carbon nanotube double quantum dot. A new fabrication technique has been used for the top-gates in order to avoid covering the whole nanotube with an oxide layer as in previous experiments. The top-gates allow us to form single dots, control the coupling between them and we observe four-fold shell filling. We perform inelastic transport spectroscopy via the excited states in the double quantum dot, a necessary step towards the implementation of new microwave-based experiments.
Cite
@article{arxiv.cond-mat/0602424,
title = {Excited state spectroscopy in carbon nanotube double quantum dots},
author = {Sami Sapmaz and Carola Meyer and Piotr Beliczynski and Pablo Jarillo-Herrero and Leo P. Kouwenhoven},
journal= {arXiv preprint arXiv:cond-mat/0602424},
year = {2007}
}