Theoretical Study of One-dimensional Chains of Metal Atoms in Nanotubes

Details Theoretical Study of One-dimensional Chains of Metal Atoms in Nanotubes Theoretical Study of One-dimensional Chains of Metal Atoms in Nanotubes

1995-08-25

arxiv.org/abs/mtrl-th/9508011v1

Physics

Condensed Matter

Materials Science

12 pages + 3 figures

Scientific paper

10.1103/PhysRevB.53.4023

Using first-principles total-energy pseudopotential calculations, we have studied the properties of chains of potassium and aluminum in nanotubes. For BN tubes, there is little interaction between the metal chains and the tubes, and the conductivity of these tubes is through carriers located at the inner part of the tube. In contrast, for small radius carbon nanotubes, there are two types of interactions: charge-transfer (dominant for alkali atoms) leading to strong ionic cohesion, and hybridization (for multivalent metal atoms) resulting in a smaller cohesion. For Al-atomic chains in carbon tubes, we show that both effects contribute. New electronic properties related to these confined atomic chains of metal are analyzed.

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