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Defining and controlling double quantum dots in single-walled carbon nanotubes

M. R. Graeber·M. Weiss·C. Schoenenberger
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Abstract

We report the experimental realization of double quantum dots in single-walled carbon nanotubes. The device consists of a nanotube with source and drain contact, and three additional top-gate electrodes in between. We show that, by energizing these top-gates, it is possible to locally gate a nanotube, to create a barrier, or to tune the chemical potential of a part of the nanotube. At low temperatures we find (for three different devices) that in certain ranges of top-gate voltages our device acts as a double quantum dot, evidenced by the typical honeycomb charge stability pattern.

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M. R. Graeber, M. Weiss, C. Schoenenberger. 2006-05-09. Defining and controlling double quantum dots in single-walled carbon nanotubes. https://doi.org/10.1088/0268-1242%2F21%2F11%2Fs09

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