ar X iv : c on d - m at / 9 81 12 63 v 2 2 5 N ov 1 99 8 Electro - mechanical Properties of Carbon Nanotubes
نویسنده
چکیده
We present a simple picture to understand the bandgap variation of any chiral carbon nanotubes with tensile and torsional strains. Using this picture, we are able to predict a simple dependence of d(Bandgap)/d(strain) on the value of (Nx −Ny) mod 3, for semiconducting tubes. We also predict a novel change in sign of d(Bandgap)/d(strain) as a function of tensile strain arising from a change in the value of the quantum number corresponding to the minimum bandgap. These calculations are complemented by calculations of the change in bandgap using energy minimized structures, and some important differences are discussed.
منابع مشابه
ar X iv : c on d - m at / 9 81 12 63 v 1 1 8 N ov 1 99 8 Electro - mechanical Properties of Carbon Nanotubes
We present a simple picture to understand the bandgap variation of any chiral carbon nanotubes with tensile and torsional strains. Using this picture, we are able to predict a simple dependence of d(Bandgap)/d(strain) on the value of (Nx −Ny) mod 3, for semiconducting tubes. We also predict a novel change in sign of d(Bandgap)/d(strain) as a function of tensile strain arising from a change in t...
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