TITLE

Tunable ambipolar Coulomb blockade characteristics in carbon nanotubes-gated carbon nanotube field-effect transistors

AUTHOR(S)
Li, Hong; Zhang, Qing
PUB. DATE
January 2009
SOURCE
Applied Physics Letters;1/12/2009, Vol. 94 Issue 2, pN.PAG
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A single-walled carbon nanotube field-effect transistor has been fabricated with two single-walled carbon nanotube bundles as its top gates and a heavily doped p-type silicon substrate as its global back gate. The channel conductance is found to oscillate significantly as a function of the top- and back-gate voltages when the device is measured at 100 K or below. “Diamond”-shaped current forbidden regions can be clearly observed under both positive and negative top-gate voltages. A single-electron transistor model is proposed to qualitatively explain the observations.
ACCESSION #
36258506

 

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