Excited state spectroscopy in carbon nanotube double quantum dots

Details Excited state spectroscopy in carbon nanotube double quantum dots Excited state spectroscopy in carbon nanotube double quantum dots

2006-02-17

arxiv.org/abs/cond-mat/0602424v1

Nano Lett., 6 (7), 1350 -1355, 2006.

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

16 pages, 6 figures, submitted to nanoletters

Scientific paper

10.1021/nl052498e

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.

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