Single-walled carbon nanotubes

From fundamental studies to new device concepts

Teri W Odom, Jin Lin Huang, Charles M. Lieber

Research output: Contribution to journalArticle

35 Citations (Scopus)

Abstract

Single-walled carbon nanotubes (SWNTs) are ideal systems for investigating fundamental properties in one-dimensional electronic systems and have the potential to revolutionize many aspects of nano/molecular electronics. Scanning tunneling microscopy (STM) has been used to characterize the atomic structure and tunneling density of states of individual SWNTs. Detailed spectroscopic measurements showed one-dimensional singularities in the SWNT density of states for both metallic and semiconducting nanotubes. The results obtained were compared to and agree well with theoretical predictions and tight-binding calculations. SWNTs were also shortened using the STM to explore the role of finite size, which might be exploited for device applications. Segments less than 10 nm exhibited discrete peaks in their tunneling spectra, which correspond to quantized energy levels, and whose spacing scales inversely with length. Finally, the interaction between magnetic impurities and electrons confined to one dimension was studied by spatially resolving the local electronic density of states of small cobalt clusters on metallic SWNTs. Spectroscopic measurements performed on and near these clusters exhibited a narrow peak near the Fermi level that has been identified as a Kondo resonance. In addition, spectroscopic studies of ultrasmall magnetic nanostructures, consisting of small cobalt clusters on short nanotube pieces, exhibited features characteristic of the bulk Kondo resonance, but also new features due to their finite size.

Original languageEnglish
Pages (from-to)203-215
Number of pages13
JournalAnnals of the New York Academy of Sciences
Volume960
Publication statusPublished - 2002

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Carbon Nanotubes
Single-walled carbon nanotubes (SWCN)
Equipment and Supplies
Scanning Tunnelling Microscopy
Nanotubes
Scanning tunneling microscopy
Cobalt
Molecular electronics
Electronic density of states
Nanostructures
Fermi level
Electron energy levels
Fundamental
Carbon
Electrons
Impurities

Keywords

  • Finite-size effects
  • Kondo effect
  • Magnetic impurities
  • One-dimensional system
  • Scanning tunneling microscopy
  • Single-walled carbon nanotubes

ASJC Scopus subject areas

  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Single-walled carbon nanotubes : From fundamental studies to new device concepts. / Odom, Teri W; Huang, Jin Lin; Lieber, Charles M.

In: Annals of the New York Academy of Sciences, Vol. 960, 2002, p. 203-215.

Research output: Contribution to journalArticle

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