Band gaps of primary metallic carbon nanotubes

Details Band gaps of primary metallic carbon nanotubes Band gaps of primary metallic carbon nanotubes

2000-07-14

arxiv.org/abs/cond-mat/0007244v2

Phys. Rev. B 63, 73408 (2001).

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Final published version. Four pages in revtex format including one epsf-embedded figure. The latest version in PDF format is a

Scientific paper

10.1103/PhysRevB.63.073408

Primary metallic, or small gap semiconducting nanotubes, are tubes with band gaps that arise solely from breaking the bond symmetry due to the curvature. We derive an analytic expression for these gaps by considering how a general symmetry breaking opens a gap in nanotubes with a well defined chiral wrapping vector. This approach provides a straightforward way to include all types of symmetry breaking effects, resulting in a simple unified gap equation as a function of chirality and deformations.

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