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

Preprint

9 May 2006

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/0605220

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.

Keywords

DOUBLE QUANTUM DOTS
CONTROLLING DOUBLE
CARBON NANOTUBES
DOTS IN SINGLE
QUANTUM DOTS
TOP GATE
NANOTUBE
DEVICE

All Related Versions

Version 1, 2006-05-09, ArXiv
Published version: Semiconductor Science and Technology, 21 (11), S64.

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