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, A. Szabados, P. Surján

Research output: Contribution to journalArticle

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 2006

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Carbon Nanotubes
Nanotubes
Transition metals
Carbon nanotubes
nanotubes
transition metals
carbon nanotubes
Magnetic resonance measurement
Semiconductor materials
Fermi level
Isotopes
Density functional theory
isotopes
Nuclear magnetic resonance
interactions
density functional theory
nuclear magnetic resonance

ASJC Scopus subject areas

  • Condensed Matter Physics
  • Electronic, Optical and Magnetic Materials

Cite this

Semiconductor-to-metal transition of double walled carbon nanotubes induced by inter-shell interaction. / Zólyomi, V.; Rusznyák, A.; Kürti, J.; Gali, A.; Simon, F.; Kuzmany, H.; Szabados, A.; Surján, P.

In: Physica Status Solidi (B) Basic Research, Vol. 243, No. 13, 11.2006, p. 3476-3479.

Research output: Contribution to journalArticle

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