Numerical Study of Transport in Carbon Nanotubes with Lattice Vacancy

Abstract

The conductance is calculated for approximately 1.6×10 5 armchair carbon nanotubes (CN's) with a different lattice vacancy in a tight-binding model using a multi-channel Landauer's formula. When the vacancy is much smaller than the circumference of CN, the conductance is quantized into zero, one, and two times the conductance quantum \(e^2/\pi\hbar\) depending only on the site-number difference between removed A and B sublattice sites.