First-principles study of single-walled armchair Cx(BN)y nanotubes

The structural and electronic properties of the armchair Cx(BN)y nanotubes are studied using the density functional theory with a generalized gradient approximation. The results show that the properties of the Cx(BN)y nanotubes are intermediate between those of carbon nanotubes and BN nanotubes, and also adjustable by their radius, ratio of carbon component, and configurations.