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An alternate mathematical model for single-wall carbon nanotubes

Nicolae Cotfas

math-pharXiv:math-ph/0403011

Abstract

The positions of atoms forming a carbon nanotube are usually described by using a system of generators of the symmetry group. Each atomic position corresponds to an element of the set Z X 0,1,...,n X 0,1, where n is a natural number depending on the considered nanotube. We obtain an alternate rather different description by starting from a description of the honeycomb lattice in terms of Miller indices. In our mathematical model which is a factor space defined by an equivalence relation in the set (v0,v1,v2)∈ Z3 | v0+v1+v2∈ 0,1 the neighbours of an atomic position can be described in a simpler way, and the mathematical objects with geometric or physical significance have a simpler and more symmetric form.

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