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Letter

Locally Addressable Tunnel Barriers within a Carbon Nanotube

M. J. Biercuk, N. Mason, J. M. Chow, and C. M. Marcus*

Department of Physics, Harvard University, Cambridge, Massachusetts 02138

Nano Lett., 2004, 4 (12), pp 2499–2502

DOI: 10.1021/nl0486721

Publication Date (Web): November 13, 2004

Corresponding author. E-mail: marcus@harvard.edu.

Abstract

We report the realization and characterization of independently controllable, fabricated tunnel barriers within a carbon nanotube. The nanotubes are mechanically bent or kinked using an atomic force microscope, and top gates are subsequently placed near each kink. Transport measurements indicate that the kinks form gate-controlled tunnel barriers and that gates placed away from the kinks have little or no effect on conductance. The overall conductance of the nanotube can be controlled by tuning the transmissions through the kinks.

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Published In Issue December 08, 2004
Received August 16, 2004
Revised Manuscript Received October 25, 2004

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Letter

Locally Addressable Tunnel Barriers within a Carbon Nanotube

Abstract

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Recommend & Share

Related Content

Gate-Defined Quantum Dots on Carbon Nanotubes

High Performance n-Type Carbon Nanotube Field-Effect Transistors with Chemically Doped Contacts

Carbon Nanotube Radio

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