A triple quantum dot in a single wall carbon nanotube

Details A triple quantum dot in a single wall carbon nanotube A triple quantum dot in a single wall carbon nanotube

2008-04-22

arxiv.org/abs/0804.3441v1

Nano Lett. 8 (4), 1055, 2008

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Supporting Information is available at Nano Lett. website (see link below)

Scientific paper

10.1021/nl072948y

A top-gated single wall carbon nanotube is used to define three coupled quantum dots in series between two electrodes. The additional electron number on each quantum dot is controlled by top-gate voltages allowing for current measurements of single, double and triple quantum dot stability diagrams. Simulations using a capacitor model including tunnel coupling between neighboring dots captures the observed behavior with good agreement. Furthermore, anti-crossings between indirectly coupled levels and higher order cotunneling are discussed.

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