Gate-defined quantum dots on carbon nanotubes

M. J. Biercuk, S. Garaj, N. Mason, J. M. Chow, C. M. Marcus

Research output: Contribution to journalArticle

Abstract

We report the realization of nanotube-based multiple quantum dots that are fully defined and controlled with electrostatic gates. Metallic top-gates are used to produce localized depletion regions in the underlying tubes; a pair of such depletion regions in a nanotube with ohmic contact electrodes defines the quantum dot. Top-gate voltages tune the transparencies of tunnel barriers as well as the electrostatic energies within single and multiple dots. This approach allows precise control over multiple devices on a single tube, and serves as a design paradigm for nanotube-based electronics and quantum systems.

Original languageEnglish (US)
Pages (from-to)1267-1271
Number of pages5
JournalNano letters
Volume5
Issue number7
DOIs
StatePublished - Jul 1 2005
Externally publishedYes

Fingerprint

Carbon Nanotubes
Nanotubes
Semiconductor quantum dots
Carbon nanotubes
nanotubes
carbon nanotubes
quantum dots
Electrostatics
depletion
electrostatics
tubes
Ohmic contacts
Transparency
tunnels
electric contacts
Tunnels
Electronic equipment
Electrodes
electrodes
Electric potential

ASJC Scopus subject areas

  • Bioengineering
  • Chemistry(all)
  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanical Engineering

Cite this

Biercuk, M. J., Garaj, S., Mason, N., Chow, J. M., & Marcus, C. M. (2005). Gate-defined quantum dots on carbon nanotubes. Nano letters, 5(7), 1267-1271. https://doi.org/10.1021/nl050364v

Gate-defined quantum dots on carbon nanotubes. / Biercuk, M. J.; Garaj, S.; Mason, N.; Chow, J. M.; Marcus, C. M.

In: Nano letters, Vol. 5, No. 7, 01.07.2005, p. 1267-1271.

Research output: Contribution to journalArticle

Biercuk, MJ, Garaj, S, Mason, N, Chow, JM & Marcus, CM 2005, 'Gate-defined quantum dots on carbon nanotubes', Nano letters, vol. 5, no. 7, pp. 1267-1271. https://doi.org/10.1021/nl050364v
Biercuk MJ, Garaj S, Mason N, Chow JM, Marcus CM. Gate-defined quantum dots on carbon nanotubes. Nano letters. 2005 Jul 1;5(7):1267-1271. https://doi.org/10.1021/nl050364v
Biercuk, M. J. ; Garaj, S. ; Mason, N. ; Chow, J. M. ; Marcus, C. M. / Gate-defined quantum dots on carbon nanotubes. In: Nano letters. 2005 ; Vol. 5, No. 7. pp. 1267-1271.
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