Controlled fabrication of single electron transistors from single-walled carbon nanotubes

Details Controlled fabrication of single electron transistors from single-walled carbon nanotubes Controlled fabrication of single electron transistors from single-walled carbon nanotubes

2008-04-04

arxiv.org/abs/0804.0817v2

APL 92, 262107 (2008)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

5 pages, 3 figures

Scientific paper

10.1063/1.2955520

Single electron transistors (SETs) are fabricated by placing single walled carbon nanotubes (SWNTs) on a 100 nm wide local Al/Al2O3 bottom gate and then contacting with Pd electrodes. Coulomb oscillations up to 125 K were observed and charging energies of 12-15 meV with level spacing of ~5 meV were measured from the Couloumb diamond, in agreement with a dot size of ~100 nm, implying that the local gate defines the dot size by bending SWNT at the edges and controls its operation. This "mechanical template" approach may facilitate large scale fabrication of SET devices using SWNT.

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