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 language | English |
|---|---|
| Pages (from-to) | 3476-3479 |
| Number of pages | 4 |
| Journal | Physica Status Solidi (B) Basic Research |
| Volume | 243 |
| Issue number | 13 |
| DOIs | |
| Publication status | Published - nov. 2006 |
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ASJC Scopus subject areas
- Condensed Matter Physics
- Electronic, Optical and Magnetic Materials
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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: Article
}
TY - JOUR
T1 - Semiconductor-to-metal transition of double walled carbon nanotubes induced by inter-shell interaction
AU - Zólyomi, V.
AU - Rusznyák, A.
AU - Kürti, J.
AU - Gali, A.
AU - Simon, F.
AU - Kuzmany, H.
AU - Szabados, A.
AU - Surján, P.
PY - 2006/11
Y1 - 2006/11
N2 - 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.
AB - 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.
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U2 - 10.1002/pssb.200669161
DO - 10.1002/pssb.200669161
M3 - Article
VL - 243
SP - 3476
EP - 3479
JO - Physica Status Solidi (B): Basic Research
JF - Physica Status Solidi (B): Basic Research
SN - 0370-1972
IS - 13
ER -