A New Class of Boron Nanotube

Details A New Class of Boron Nanotube A New Class of Boron Nanotube

2009-08-11

arxiv.org/abs/0908.1504v2

ChemPhysChem 2009, 10, 3119-3121

Physics

Condensed Matter

Materials Science

Scientific paper

10.1002/cphc.200900632

The configurations, stability and electronic structures of a new class of boron sheet and related boron nanotubes are predicted within the framework of density functional theory. This boron sheet is sparser than those of recent proposals. Our theoretic results show that the stable boron sheet remains flat and is metallic. There are bands similar to the p-bands in graphite near the Fermi level. Stable nanotubes with various diameters and chiral vectors can be rolled from the sheet. Within our study, only the thin (8, 0) nanotube with a band gap of 0.44 eV is semiconducting, while all the other thicker boron nanotubes are metallic, independent of their chirality. It indicates the possibility, in the design of nanodevices, to control the electronic transport properties of the boron nanotube through the diameter.

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