Abstract The stability and electronic structure of hypothetical InN nanotubes were studied by first-principles density functional theory. It was found that the strain energies of InN nanotubes are smaller than those of carbon nanotubes of the same radius. Single-wall zigzag InN nanotubes were found to be semiconductors with a direct band gap while the armchair counterparts have an indirect band gap. The band gaps of nanotubes decrease with increasing diameter, similar to the case of carbon nanotubes.
Received: 14 June 2005
Revised: 30 October 2005
Accepted manuscript online:
PACS:
73.21.-b
(Electron states and collective excitations in multilayers, quantum wells, mesoscopic, and nanoscale systems)
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