Interface study of metal electrode and semiconducting carbon nanotubes: Effects of electrode atomic species

P. Tarakeshwar, J. J. Palacios, Dae M. Kim

Research output: Contribution to journalArticlepeer-review

5 Scopus citations

Abstract

Presented herein are the first-principle calculations of the transport and other pertinent electronic properties of metal contacted semiconducting carbon nanotubes (CNTs). The investigation is focused on elucidating access resistance as a function of the work function difference and the chemical nature of the metal atomic species. Our results show that, for simple end-contact geometries, the Fermi level position within the gap differs between palladium-contacted CNTs and gold-contacted CNTs. This is interesting since both of these metals possess similar work functions. The role of the metal-CNT coupling is examined in light of the resulting I-V behavior of the system.

Original languageEnglish (US)
Article number4359128
Pages (from-to)124-127
Number of pages4
JournalIEEE Transactions on Nanotechnology
Volume7
Issue number2
DOIs
StatePublished - Mar 2008

Keywords

  • Electronic structure
  • I-V curves
  • Quantum wire metal contacts
  • Semiconducting carbon nanotubes
  • Transport characteristics

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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