Chiral single-wall gold nanotubes
Date
2004Source Title
Physical Review Letters
Print ISSN
0031-9007
Publisher
American Physical Society
Volume
93
Issue
19
Pages
196807-1 - 196807-4
Language
English
Type
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Abstract
The formation of freestanding and tip-suspended chiral-wall (n,m) nanotubes, which were composed of helical atomic strands, from gold atoms was investigated using first-principles calculations, where (n,m) notation defines the structure of the tube. The tubes with 3≤n≤5 were found to be stable and exhibited electronic and transport properties investigated. The (5,3) gold tube was energetically the most favourable. It was observed from the quantum ballistic conductance, band structure and charge density analysis that the current on these wires was less chiral, and no direct correlation between the numbers of conduction channels and helical strands was found.
Keywords
Band structureBinding energy
Chemical bonds
Correlation methods
Elastic moduli
Fermi level
Free energy
Gold
Green's function
Lattice constants
Magnetic fields
Magnetic flux
Nanotechnology
Quantum theory
Transmission electron microscopy
Charge densities
Nanoelectronics
Quantum ballistic conductance
Single-wall nanotubes (SWNT)
Carbon nanotubes