Semiconductor-to-metal transition of double walled carbon nanotubes induced by inter-shell interaction

V. Zólyomi, A. Rusznyák, J. Kürti, A. Gali, F. Simon, H. Kuzmany, Á Szabados, P. R. Surján

Research output: Article

25 Citations (Scopus)

Abstract

Nuclear magnetic resonance measurements on isotope engineered double walled carbon nanotubes (DWCNT) suggest a uniformly metallic character of all nanotubes. This effect can only be explained by the interaction between the inner and outer shell. Here we study the DWCNTs by density functional theory and inter-molecular Hückel model. We present a study of the density of states of DWCNTs which clearly shows that two layers of semiconducting single walled nanotubes can indeed form a metallic DWCNT in many cases, but not necessarily in every case. For most metallic DWCNTs, a high density of states can be expected at the Fermi level.

Original languageEnglish
Pages (from-to)3476-3479
Number of pages4
JournalPhysica Status Solidi (B) Basic Research
Volume243
Issue number13
DOIs
Publication statusPublished - nov. 1 2006

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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